Document:

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                                                                    EXHIBIT 4.29

                                                                   ROMOFIN, A.G.

                         REGISTRATION RIGHTS AGREEMENT

        THIS REGISTRATION RIGHTS AGREEMENT, dated the 29th day of December,
1999, between ROMOFIN, A.G. (the "Holder"), and SPATIALIZER AUDIO LABORATORIES,
INC., a Delaware corporation having its principal place of business at 20700
Ventura Boulevard, Suite 140, Woodland Hills, California 91364 (the "Company").

        WHEREAS, simultaneously with the execution and delivery of this
Agreement, the Holder is purchasing from the Company, pursuant to that certain
Common Stock Subscription Agreement (the "Subscription Agreement"), dated of
even date herewith, Four Hundred Forty-Eight Thousand Six Hundred Thirty-Two
(448,632) shares of Common Stock, and a Warrant to purchase an aggregate of Five
Hundred Thousand (500,000) shares of Common Stock. The shares of Common Stock of
the Company underlying the Warrants acquired by the Holder or the other
purchasers are referred to as the "Warrant Shares" (capitalized terms defined in
the Subscription Agreement and not otherwise defined herein have the meanings
specified in the Subscription Agreement); and

        WHEREAS, the Company desires to grant to the Holder the registration
rights set forth herein.

        NOW, THEREFORE, the parties hereto mutually agree as follows:

        Section 1. Registrable Securities. As used herein the term "Registrable
Securities" means the shares of Common Stock subscribed for and purchased by the
Holder pursuant to the Subscription Agreement, and the Warrant Shares; provided,
however, that with respect to any particular Registrable Security, such security
shall cease to be a Registrable Security when, as of the date of determination,
(i) it has been effectively registered under the Securities Act of 1933, as
amended (the "Act") and disposed of pursuant thereto, (ii) registration under
the Act is no longer required for the immediate public distribution of such
security as a result of the provisions of Rule 144, or (iii) it has ceased to be
outstanding. In the event of any merger, reorganization, consolidation,
recapitalization or other change in corporate structure affecting the Common
Stock, such adjustment shall be made in the definition of Registrable Security
as is appropriate in order to prevent any dilution or enlargement of the rights
granted pursuant to this Section 1.

        Section 2. Restrictions on Transfer. The Holder acknowledges and
understands that prior to the registration of the Registrable Securities as
provided herein, the Registrable Securities are "restricted securities" as
defined in Rule 144 promulgated under the Act. The Holder understands that no
disposition or transfer of the Registrable Securities may be made by Holder in
the absence of (i) an opinion of counsel reasonably satisfactory to the Company
that such transfer may be made or (ii) a registration statement under the Act is
then in effect with respect thereto.

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                                                                   ROMOFIN, A.G.

        Section 3. Registration Rights.

               (a) The Company agrees that it will prepare and file with the
Securities and Exchange Commission (the "SEC"), within thirty (30) days after
the date hereof, a registration statement on Form S-3 or if the Company is not
eligible to use such Form S-3, another appropriate form of registration
statement (the "Registration Statement"), at the sole expense of the Company
(except as provided in Section 3(c) hereof), in respect of Holder's Registrable
Securities, so as to permit resale of the Registrable Securities under the Act.
The Company agrees that it will cause the Registration Statement to become
effective by April 15, 2000. The number of securities to be registered shall
include all of Holder's Registrable Securities.

               (b) The Company will maintain the Registration Statement or
post-effective amendment filed under this Section 3 hereof current under Act
until the earlier of (i) the date that all of the Registrable Securities have
been sold pursuant to the Registration Statement, (ii) the date that the
Registrable Securities may be sold under the provisions of Rule 144 or (iii)
three (3) years after the effective date of the Registration Statement (the
"Effective Date").

               (c) All fees, disbursements and out-of-pocket expenses and costs
incurred by the Company in connection with the preparation and filing of the
Registration Statement under Section 3(a) and in complying with applicable
securities and Blue Sky laws (including, without limitation, all attorneys'
fees) shall be borne by the Company. The Holder shall bear the costs of
underwriting discounts and commissions, if any, applicable to the Registrable
Securities being registered on its behalf and all of the other fees and expenses
of such registration, including of its counsel and such other expenses as are
necessary to qualify the sale of Registrable Securities in compliance with any
state Blue Sky laws. The Company shall use its best efforts to qualify any of
the securities for sale in such states as the Holder reasonably designates and
shall furnish indemnification in the manner provided in Section 9 hereof.
However, the Company shall not be required to qualify the Registrable Securities
in any state or jurisdiction which will require an escrow or other restriction
relating to the Company and/or the sellers, or where the Company would be
required to qualify as a dealer in securities under the securities or blue sky
laws of such state or jurisdiction. The Company at its expense will supply the
Holder with copies of such Registration Statement and the prospectus or offering
circular included therein and other related documents in such quantities as may
be reasonably requested by the Holder.

               (d) The Company shall not be required by this Section 3 to
include Holder's Registrable Securities in the Registration Statement which is
to be filed if, in the opinion of counsel for both the Holder and the Company
(or, should they not agree, in the opinion of another counsel experienced in
securities law matters acceptable to counsel for the Holder and the Company),
the proposed offering or other transfer as to which such registration is
requested is exempt from applicable federal and state securities laws and would
result in all purchasers or transferees obtaining securities which are not
restricted securities, as defined in Rule 144 under the Act.

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                                                                   ROMOFIN, A.G.

               (e) No provision contained herein shall preclude the Company from
selling securities pursuant to any registration statement in which it is
required to include Registrable Securities pursuant to this Section 3.

        Section 4. Cooperation with Company. Holder will cooperate with the
Company in all respects in connection with this Agreement, including, timely
supplying all information reasonably requested by the Company and executing and
returning all documents reasonably requested in connection with the registration
and sale of the Registrable Securities.

        Section 5. Registration Procedures. Whenever the Company is required by
the provisions of this Agreement to effect the registration of any of the
Registrable Securities under the Act, the Company shall (except as otherwise
provided in this Agreement), as expeditiously as possible:

               (a) prepare and file with the SEC such amendments and supplements
to such registration statement and the Prospectus used in connection therewith
as may be necessary to keep such registration statement effective as per Section
3(b) herein and to comply with the provisions of the Act with respect to the
sale or other disposition of all securities covered by such registration
statement when the Holder of such securities shall desire to sell or otherwise
dispose of the same (including prospectus supplements with respect to the sales
of securities from time to time in connection with a registration statement
pursuant to Rule 415 under the Act);

               (b) furnish to the Holder such numbers of copies of a summary
prospectus or other prospectus, including a preliminary prospectus or any
amendment or supplement to any prospectus, in conformity with the requirements
of the Act, and such other documents, as such Holder may reasonably request in
order to facilitate the public sale or other disposition of the securities owned
by such Holder;

               (c) use its best efforts to register and qualify the securities
covered by such registration statement under such other securities or blue sky
laws of such jurisdictions as the Holder shall reasonably request, and do any
and all other acts and things which may be necessary or advisable to enable the
Holder to consummate the public sale or other disposition in such jurisdiction
of the securities owned by the Holder; provided, however, that: (i) the Company
shall not for any such purpose be required to qualify to do business as a
foreign corporation in any jurisdiction wherein it is not so qualified or to
file therein any general consent to service of process, and (ii) the Company
shall not be obligated to take any action to effect any such registration,
qualification or compliance pursuant to this Section 5(c) in any jurisdiction in
which the Company would be required to qualify as a dealer in securities under
the securities or blue sky laws of such jurisdiction.

               (d) list such securities on the OTC Bulletin Board or any
securities exchange on which any securities of the Company is then listed, if
the listing of such securities is then permitted under the rules of such
exchange;

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                                                                   ROMOFIN, A.G.

               (e) enter into and perform its obligations under an underwriting
agreement, if the offering is an underwritten offering, in usual and customary
form, with the managing underwriter or underwriters of such underwritten
offering;

               (f) notify each Holder of Registrable Securities covered by such
registration statement, at any time when a prospectus relating thereto covered
by such registration statement is required to be delivered under the Act, of the
happening of any event of which it has knowledge as a result of which the
prospectus included in such registration statement, as then in effect, includes
an untrue statement of a material fact or omits to state a material fact
required to be stated therein or necessary to make the statements therein not
misleading in the light of the circumstances then existing.

        Section 6. Assignment. The rights granted the Holder under this
Agreement shall not be assigned. This Agreement is binding upon and inures to
the benefit of the parties hereto and their respective heirs, successors and
permitted assigns.

        Section 7. Termination of Registration Rights. The rights granted
pursuant to this Agreement shall terminate as to the Holder upon the occurrence
of any of the following:

                (a)     all of the Holder's securities subject to this Agreement
                        have been registered;

                (b)     such Holder's securities subject to this Agreement may
                        be sold without such registration pursuant to Rule 144
                        promulgated by the SEC pursuant to the Act;

                (c)     such Holder's securities subject to this Agreement can
                        be sold pursuant to Rule 144(k).

        Section 8. Indemnification.

               (a) The Company agrees to indemnify and hold harmless the Holder
and each person, if any, who controls Holder within the meaning of the Act
("Distributing Holders") against any losses, claims, damages or liabilities,
joint or several (which shall, for all purposes of this Agreement, include, but
not be limited to, all costs of defense and investigation and all attorneys'
fees), to which the Distributing Holder may become subject, under the Act or
otherwise, insofar as such losses, claims, damages or liabilities (or actions in
respect thereof) arise out of or are based upon any untrue statement or alleged
untrue statement of any material fact contained in the Registration Statement,
or any related preliminary prospectus, final prospectus, offering circular,
notification or amendment or supplement thereto, or arise out of or are based
upon the omission or alleged omission to state therein a material fact required
to be stated therein or necessary to make the statements therein not misleading;
provided, however, that the Company will not be liable in any such case to the
extent that any such loss, claim, damage or liability arises out of or is based
upon an untrue statement or alleged untrue statement or omission or alleged
omission made in the Registration Statement, preliminary prospectus,

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                                                                   ROMOFIN, A.G.

final prospectus, offering circular, notification or amendment, or supplement
thereto in reliance upon, and in conformity with, written information furnished
to the Company by the Distributing Holders, specifically for use in the
preparation thereof. This Section shall not inure to the benefit of any
Distributing Holder with respect to any person asserting such loss, claim,
damage or liability who purchased the Registrable Securities which are the
subject thereof if the Distributing Holder failed to send or give (in violation
of the Act or the rules and regulations promulgated thereunder) a copy of the
prospectus contained in the Registration Statement to such person at or prior to
the written confirmation to such person of the sale of such Registrable
Securities, where the Distributing Holder was obligated to do so under the Act
or the rules and regulations promulgated hereunder. This indemnity agreement
will be in addition to any liability which the Company may otherwise have.

               (b) Each Distributing Holder agrees that it will indemnify and
hold harmless the Company, and each officer, director of the Company or person,
if any, who controls the Company within the meaning of the Act, against any
losses, claims, damages or liabilities (which shall, for all purposes of this
Agreement, include, but not be limited to, all costs of defense and
investigation and all attorneys' fees) to which the Company or any such officer,
director or controlling person may become subject under the Act or otherwise,
insofar as such losses claims, damages or liabilities (or actions in respect
thereof); arise out of or are based upon any untrue statement or alleged untrue
statement of any material fact contained in the Registration Statement prepared
by the Company, or any related preliminary prospectus, final prospectus,
offering circular, notification or amendment or supplement thereto, or arise out
of or are based upon the omission or the alleged omission to state therein a
material fact required to be stated therein or necessary to make the statements
therein not misleading, but in each case only to the extent that such untrue
statement or alleged untrue statement or omission or alleged omission was made
in such Registration Statement, preliminary prospectus, final prospectus,
offering circular, notification or amendment or supplement thereto in reliance
upon, and in conformity with, written information furnished to the Company by
such Distributing Holder, specifically for use in the preparation thereof. This
indemnity agreement will be in addition to any liability which the Distributing
Holders may otherwise have.

               (c) Promptly after receipt by an indemnified party under this
Section of notice of the commencement of any action, such indemnified party
will, if a claim in respect thereof is to be made against the indemnifying party
under this Section, notify the indemnifying party of the commencement thereof;
but the omission so to notify the indemnifying party will not relieve the
indemnifying party from any liability which it may have to any indemnified party
otherwise than as to the particular item as to which indemnification is then
being sought solely pursuant to this Section. In case any such action is brought
against any indemnified party, and it notifies the indemnifying party of the
commencement thereof, the indemnifying party will be entitled to participate in,
and, to the extent that it may wish, jointly with any other indemnifying party
similarly notified, assume the defense thereof, subject to the provisions herein
stated and after notice from the indemnifying party to such indemnified party of
its election so to assume the defense thereof, the indemnifying party will not
be liable to such indemnified party under this Section for any legal or other
expenses subsequently incurred by such indemnified party in

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                                                                   ROMOFIN, A.G.

connection with the defense thereof other than reasonable costs of
investigation, unless the indemnifying party shall not pursue the action to its
final conclusion. The indemnified party shall have the right to employ separate
counsel in any such action and to participate in the defense thereof, but the
fees and expenses of such counsel shall not be at the expense of the
indemnifying party if the indemnifying party has assumed the defense of the
action with counsel reasonably satisfactory to the indemnified party; provided
that if the indemnified party is the Distributing Holder, the fees and expenses
of such counsel shall be at the expense of the indemnifying party if (i) the
employment of such counsel has been specifically authorized in writing by the
indemnifying party, or (ii) the named parties to any such action (including any
impleaded parties) include both the Distributing Holder and the indemnifying
party and the Distributing Holder shall have been advised by such counsel that
there may be one or more legal defenses available to the indemnifying party
different from or in conflict with any legal defenses which may be available to
the Distributing Holder (in which case the indemnifying party shall not have the
right to assume the defense of such action on behalf of the Distributing Holder,
it being understood, however, that the indemnifying party shall, in connection
with any one such action or separate but substantially similar or related
actions in the same jurisdiction arising out of the same general allegations or
circumstances, be liable only for the reasonable fees and expenses of one
separate firm of attorneys for the Distributing Holder, which firm shall be
designated in writing by the Distributing Holder). No settlement of any action
against an indemnified party shall be made without the prior written consent of
the indemnified party, which consent shall not be unreasonably withheld.

        Section 9. Contribution. In order to provide for just and equitable
contribution under the Act in any case in which (i) the Distributing Holder, or
the Company, makes a claim for indemnification, but is judicially determined (by
the entry of a final judgment or decree by a court of competent jurisdiction and
the expiration of time to appeal or the denial of the last right of appeal) that
such indemnification may not be enforced in such case notwithstanding the fact
that the express provisions of this Agreement provide for indemnification in
such case, or (ii) contribution under the Act may be required on the part of any
Distributing Holder, or the Company, then the Company and the applicable
Distributing Holder shall contribute to the aggregate losses, claims, damages or
liabilities to which they may be subject (which shall, for all purposes of this
Agreement, include, but not be limited to, all costs of defense and
investigation and all attorneys' fees), in either such case (after contribution
from others) on the basis of relative fault as well as any other relevant
equitable considerations. The relative fault shall be determined by reference
to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact
relates to information supplied by the Company on the one hand or the applicable
Distributing Holder, on the other hand, and the parties' relative intent,
knowledge, access to information and opportunity to correct or prevent such
statement or omission. The Company and the Distributing Holder agree that it
would not be just and equitable if contribution pursuant to this Section were
determined by pro rata allocation or by any other method of allocation which
does not take account of the equitable considerations referred to in this
Section. The amount paid or payable by an indemnified party as a result of the
losses, claims, damages or liabilities (or actions in respect thereof) referred
to above in this Section shall be deemed to include any legal or other

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                                                                   ROMOFIN, A.G.

expenses reasonably incurred by such indemnified party in connection with
investigating or defending any such action or claim. No person guilty of
fraudulent misrepresentation (within the meaning of Section 11(f) of the Act)
shall be entitled to contribution from any person who was not guilty of such
fraudulent misrepresentation.

        Section 10. Notices. Any notice pursuant to this Agreement by the
Company or by the Holder shall be in writing and shall be deemed to have been
duly given if delivered by (i) hand, (ii) by facsimile and followed by mail
delivery or (iii) if mailed by certified mail, return receipt requested, postage
prepaid, addressed as follows:

               (a) If to the Holder, to its address set forth herein.

               (b) If to the Company, at the address set forth herein, or to
such other address as any such party may designate by notice to the other party.
Notices shall be deemed given at the time they are delivered personally or five
(5) days after they are mailed in the manner set forth above. If notice is
delivered by facsimile and followed by mail, delivery shall be deemed given two
(2) days after such facsimile is sent.

        Section 11. "Piggy-Back" Registration. The Holder shall have the right
to include the Registrable Securities as part of any registration of securities
filed by the Company (other than in connection with a transaction contemplated
by Rule 145(a) promulgated under the Act or pursuant to Form S-8) and must be
notified in writing of such filing; provided, however, that the Holder agrees it
shall not have any piggy-back registration rights pursuant to this Section if
the Registrable Securities may be sold in the United States pursuant to the
provisions of Rule 144. The Holder shall have five (5) business days to notify
the Company in writing as to whether the Company is to include the Holder or not
include the Holder as part of the registration; provided, however, that if any
registration pursuant to this Section shall be underwritten, in whole or in
part, the Company may require that the Registrable Securities requested for
inclusion pursuant to this Section be included in the underwriting on the same
terms and conditions as the securities otherwise being sold through the
underwriters. If in the good faith judgment of the underwriter evidenced in
writing of such offering only a limited number of Registrable Securities should
be included in such offering, or no such shares should be included, the holder,
and all other selling stockholders, shall be limited to registering such
proportion of their respective shares as shall equal the proportion that the
number of shares of selling stockholders permitted to be registered by the
underwriter in such offering bears to the total number of all shares then held
by all selling stockholders desiring to participate in such offering. Those
Registrable Securities which are excluded from an underwritten offering pursuant
to the foregoing provisions of this Section (and all other Registrable
Securities) shall be withheld from the market by the holders thereof for a
period, not to exceed one hundred eighty (180) days, which the underwriter may
reasonably determine is necessary in order to effect such underwritten offering.
The Company shall have the right to terminate or withdraw any registration
initiated by it under this Section prior to the effectiveness of such
registration. All registration expenses incurred by the Company in complying
with this Section shall be paid by the Company, exclusive of underwriting
discounts, commissions and legal fees and expenses for counsel to the Holder.

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                                                                   ROMOFIN, A.G.

        Section 12. Counterparts. This Agreement may be executed in
counterparts, each of which shall be deemed an original, but all of which
together shall constitute one and the same instrument.

        Section 13. Headings. The headings in this Agreement are for reference
purposes only and shall not affect in any way the meaning or interpretation of
this Agreement.

        Section 14. Governing Law, Venue. This Agreement will be construed and
enforced in accordance with and governed by the laws of the State of California,
except for matters arising under the Act, without reference to principles of
conflicts of law. Each of the parties consents to the jurisdiction of the
federal courts whose districts encompass any part of the State of California or
the state courts of the State of California in connection with any dispute
arising under this Agreement and hereby waives, to the maximum extent permitted
by law, any objection, including any objection based on forum non conveniens, to
the bringing of any such proceeding in such jurisdictions. Each party hereby
agrees that if another party to this Agreement obtains a judgment against it in
such a proceeding, the party which obtained such judgment may enforce same by
summary judgment in the courts of any state or country having jurisdiction over
the party against whom such judgment was obtained, and each party hereby waives
any defenses available to it under local law and agrees to the enforcement of
such a judgment. Each party to this Agreement irrevocably consents to the
service of process in any such proceeding by the mailing of copies thereof by
registered or certified mail, postage prepaid, to such party at its address set
forth herein. Nothing herein shall affect the right of any party to serve
process in any other manner permitted by law.

        Section 15. Severability/Defined Terms. If any provision of this
Agreement shall for any reason be held invalid or unenforceable, such invalidity
or unenforceability shall not affect any other provision hereof and this
Agreement shall be construed as if such invalid or unenforceable provision had
never been contained herein. Terms not otherwise defined herein shall be defined
in accordance with the Subscription Agreement.

                  [Remainder of Page Intentionally Left Blank]

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                                                                   ROMOFIN, A.G.

        IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed, on the day and year first above written.

                                    SPATIALIZER AUDIO LABORATORIES, INC.

                                    By: /S/ Henry R. Mandell
                                       -----------------------------------------
                                    Name: Henry R. Mandell
                                         ---------------------------------------
                                    Title: Interim Chief Executive Officer
                                          --------------------------------------

WITNESSED:

/S/ Margaret G. Graf
----------------------------------
Margaret G. Graf

                                    ROMOFIN, A.G.

                                    By: /S/  B. J. Mosimann
                                       -----------------------------------------
                                    Name: B. J. Mosimann
                                         ---------------------------------------
                                    Title: President
                                          --------------------------------------

                                       9<PAGE>   1

                                                                    EXHIBIT 4.30

THESE SECURITIES HAVE NOT BEEN REGISTERED WITH THE UNITED STATES SECURITIES AND
EXCHANGE COMMISSION (THE "SEC") OR THE SECURITIES COMMISSION OF ANY STATE
PURSUANT TO AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS
AMENDED (THE "ACT"). THIS SUBSCRIPTION AGREEMENT SHALL NOT CONSTITUTE AN OFFER
TO SELL NOR A SOLICITATION OF AN OFFER TO BUY THE SECURITIES IN ANY JURISDICTION
IN WHICH SUCH OFFER OR SOLICITATION WOULD BE UNLAWFUL. THE SECURITIES MAY NOT BE
SOLD, PLEDGED, TRANSFERRED OR ASSIGNED EXCEPT PURSUANT TO AN EFFECTIVE
REGISTRATION STATEMENT UNDER THE ACT AND UNDER APPLICABLE STATE SECURITIES LAWS,
OR IN A TRANSACTION WHICH IS EXEMPT FROM REGISTRATION UNDER THE PROVISIONS OF
THE ACT AND UNDER PROVISIONS OF APPLICABLE STATE SECURITIES LAWS.

                    10% CONVERTIBLE SERIES B PREFERRED STOCK
                             SUBSCRIPTION AGREEMENT

                      SPATIALIZER AUDIO LABORATORIES, INC.

        THIS 10% CONVERTIBLE SERIES B PREFERRED STOCK SUBSCRIPTION AGREEMENT
(this "Agreement") is executed in reliance upon the transaction exemption
afforded by Regulation D as promulgated by the Securities and Exchange
Commission ("SEC"), under the Securities Act of 1933, as amended (the "Act").

        This Agreement has been executed by the undersigned parties in
connection with the private placement of the 10% Convertible Series B Preferred
Stock, $0.01 par value per share (the "Preferred Stock") of Spatializer Audio
Laboratories, Inc., a corporation organized under the laws of Delaware, USA (OTC
Bulletin Board symbol "SPAZ"), located at 20700 Ventura Boulevard, Suite 140,
Woodland Hills, California 91364, (hereinafter referred to as the "Company") to
the Subscribers listed on Schedule A annexed hereto (each a "Subscriber" or
"Purchaser"). The terms on which the Preferred Stock may be converted into
common stock of the Company, par value $0.01 per share (the "Common Stock") and
the other terms of the Preferred Stock are set forth in the Certificate of
Designation of the 10% Convertible Series B Preferred Stock (Exhibit A annexed
hereto). This Subscription and, if accepted by the Company, the offer and sale
of the Preferred Stock (sometimes referred to as the "Securities"), are being
made in reliance upon the provisions of Regulation D under the Act.

        The Closing Date shall be determined in accordance with Section 11
herein.

<PAGE>   2

        Each Subscriber hereby represents and warrants to and agrees with the
Company, and the Company hereby represents and warrants to and agrees with each
Subscriber, as follows:

        SECTION 1. AGREEMENT TO SUBSCRIBE; PURCHASE PRICE.

               1.1 Closing. The Company will sell and each Subscriber will buy,
in reliance upon the representations and warranties of the Company and the
Subscribers contained in this Agreement, upon the terms and conditions
hereinafter set forth, shares of Preferred Stock as set forth on Schedule A.

               1.2 Cancellation of Existing Indebtedness. As of December 29,
1999, the Company owes that amount of outstanding principal and accrued interest
thereon (the "Existing Indebtedness") as conclusively indicated for each
Subscriber on Schedule B annexed hereto pursuant to those notes and agreements
listed on Schedule B. The consideration for the issuance of shares of Preferred
Stock to the Subscribers shall be the cancellation of the entire amount of
Existing Indebtedness owed to the Subscribers. The Subscribers and the Company
hereby agree that, upon the issuance of the Preferred Stock to the Subscribers
in accordance with Schedule A, all Existing Indebtedness is completely
extinguished, and that all obligations of the Company with respect to the
Existing Indebtedness are completely satisfied and discharged. This Agreement
constitutes the entire understanding of the Company and the Subscribers with
respect to the Existing Indebtedness, and completely replaces and supercedes all
prior notes, letters, communications, understandings, certificates, instruments,
documents, and agreements, both oral and written, that evidence or relate to any
portion of the Existing Indebtedness, including without limitation those notes,
agreements and understandings listed on Schedule B. All written documents that
evidence or relate to any portion of the Existing Indebtedness shall be null and
void and of no force or effect. Subscribers shall return any original copies of
such documentation to the Company for cancellation.

               1.3 Number of Shares. The number of shares of Preferred Stock to
be issued to each Subscriber was determined by dividing (i) that portion of the
Existing Indebtedness owed to such Subscriber as of December 29, 1999 (as set
forth on Schedule B), by (ii) Ten Dollars (US$10.00); provided, however, that
the Company shall not issue to any Subscriber a fraction of a share of Preferred
Stock and shall instead round the number of shares of Preferred Stock issued up
to the next whole share of Preferred Stock.

               1.4 Dividends. Dividends will accrue and be paid at the rate of
ten (10%) percent per annum on the Preferred Stock until the Preferred Stock has
been converted, and all accrued dividends thereon shall be payable in Common
Stock of the Company or in cash at the time of conversion at the option of the
Company. For purposes of calculating dividends, each share of Preferred Stock
shall be deemed to have a face value of Ten Dollars (US$10.00).

        SECTION 2. REPRESENTATIONS AND WARRANTIES OF SUBSCRIBER. Each Subscriber
hereby acknowledges, represents, warrants and agrees as follows:

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               2.1 Organization and Authorization. If not an individual, it is
duly incorporated or organized and is validly existing in the state or country
of its incorporation or organization and has all requisite power and authority
to purchase and hold the Securities. The decision to invest and the execution
and delivery of this Agreement by Subscriber, the performance by Subscriber of
its obligations hereunder and the consummation by Subscriber of the transactions
contemplated hereby have been duly authorized and require no other proceedings
on the part of Subscriber. The undersigned has all right, power and authority to
execute and deliver this Agreement. This Agreement has been duly executed and
delivered by Subscriber and, assuming the execution and delivery hereof and
acceptance thereof by the Company, will constitute the legal, valid and binding
obligation of Subscriber, enforceable against Subscriber in accordance with its
terms.

               2.2 No Conflict. The execution and delivery of this Agreement do
not, and the consummation of the transactions contemplated hereby will not,
conflict with, or result in any violation of, or default under, or give rise to
a right of termination, cancellation or acceleration of any material obligation
or to a loss of a material benefit with respect to, any provision of
Subscriber's charter, bylaws, partnership agreement, operating agreement or
other organizational document and any amendments thereto, or any material
mortgage, deed of trust, indenture, lease or other agreement or instrument,
permit, concession, franchise, license, judgment, order, decree statute, law,
ordinance, rule or regulation applicable to Subscriber.

               2.3 Evaluation of Risks. Subscriber has such knowledge and
experience in financial and business matters as to be capable of evaluating the
merits and risks of, and bearing the economic risks entailed by, an investment
in the Company and of protecting its interests in connection with this
transaction. Subscriber recognizes that its investment in the Company involves a
high degree of risk and it can afford the complete loss of its investment.

               2.4 Independent Counsel. Subscriber acknowledges that it has been
advised to consult with its own attorney regarding legal matters concerning the
Company and to consult with its tax advisor regarding the tax consequences of
acquiring the Securities.

               2.5 Disclosure Documentation. Subscriber has received and
reviewed copies of the Company's reports filed under the Securities Exchange Act
of 1934, as amended (the "1934 Act"), and the Act, including its 10-Ks, 10-Qs,
8-Ks, and registration statements, filed by the Company since March 1, 1998
(collectively, the "Reports"). Except for the Reports and this Agreement,
Subscriber acknowledges that it is not relying on any other information relating
to the offer and sale of the Securities. Subscriber acknowledges that the
Company has offered to make available any additional public information that any
Subscriber may reasonably request, including technical information, and other
material information about the Company. Subscriber acknowledges that the Company
has offered its full and unconditional cooperation in making such information
available to Subscriber, and that the Company has recommended that Subscriber
request and review such information prior to making an investment decision.

                                       3
<PAGE>   4

               2.6 Opportunity to Ask Questions. Subscriber has had a reasonable
opportunity to ask questions of and receive answers from the Company concerning
the Company and the offering, and all such questions, if any, have been answered
to the full satisfaction of Subscriber.

               2.7 This Agreement and Reports Constitute Sole Representations.
Except for the delivery of the Reports and this Agreement, no oral or written
representations or warranties have been made, or oral or written information
furnished, to Subscriber or its advisors, if any, with respect to the offer and
sale of the Securities by the Company, any agent, employee or affiliate of the
Company, or by any other person. Subscriber acknowledges that in entering into
this transaction Subscriber is not relying upon any information, other than that
contained in the Reports, this Agreement and the results of independent
investigation, if any, by Subscriber.

               2.8 Subscriber is an Accredited Investor. Subscriber is an
"Accredited Investor" as defined below and represents and warrants it is
included within one or more of the following categories of Accredited Investors:

                (i)     Any bank as defined in Section 3(a)(2) of the Act, or
                        any savings and loan associated or other institution as
                        defined in Section 3(a)(5)A of the Act whether acting in
                        its individual or fiduciary capacity; any broker or
                        dealer registered pursuant to Section 15 of the 1934
                        Act; any insurance company as defined in Section 2(13)
                        of the Act; any investment company registered under the
                        Investment Company Act of 1940 or a business development
                        company as defined in Section 2(a)(48) of that Act; any
                        Small Business Investment Company licensed by the U.S.
                        Small Business Administration under Section 301(c) or
                        (d) of the Small Business Act of 1958; any plan
                        established and maintained by a state, its political
                        subdivisions, or any agency or instrumentality of a
                        state or its political subdivision, for the benefits of
                        its employees if such plan has total assets in excess of
                        $5,000,000; and employee benefit plan within the meaning
                        of Title I of the Employee Retirement Income Security
                        Act of 1974 if the investment decision is made by a plan
                        fiduciary, as defined in Section 3(21) of such Act,
                        which is either a bank, savings and loan association,
                        insurance company, or registered investment advisor, or
                        if the employee benefit plan has total assets in excess
                        of $5,000,000 or, if a self-directed plan, with
                        investment decisions made solely by persons that are
                        accredited investors;

                (ii)    Any private business development company as defined in
                        Section 202(a)(22) of the Investment Advisers Act of
                        1940;

                (iii)   Any organization described in Section 501(c)(3) of the
                        Internal Revenue Code, corporation, Massachusetts or
                        similar business trust, or partnership, not formed for
                        the specific purpose of acquiring the securities
                        offered, with total assets in excess of $5,000,000;

                                       4
<PAGE>   5

                (iv)    Any director, executive officer, or general partner of
                        the issuer of the securities being offered or sold, or
                        any director, executive officer, or general partner of a
                        general partner of that issuer;

                (v)     Any natural person whose individual net worth, or joint
                        net worth with that person's spouse, at the time of his
                        purchase exceeds $1,000,000;

                (vi)    Any natural person who had an individual income in
                        excess of $200,000 in each of the two (2) most recent
                        years or joint income with that person's spouse in
                        excess of $300,000 in each of those years and has a
                        reasonable expectation of reaching that same income
                        level in the current year;

                (vii)   Any trust, with total assets in excess of $5,000,000,
                        not formed for the specific purpose of acquiring the
                        securities offered, whose purchase is directed by a
                        sophisticated person as described in Section
                        230.506(b)(2)(ii) of Regulation D under the Act;

                (viii)  Any entity in which all of the equity owners are
                        accredited investors;

                (ix)    Any self-directed employee benefit plan with investment
                        decisions made solely by persons that are accredited
                        investors within the meaning of Rule 501 of Regulation D
                        promulgated under the Act; or

                (x)     Any private investment company with assets under
                        management in excess of US$________________________.

               2.9 No Registration, Review or Approval. Subscriber acknowledges
and understands that the limited private offering and sale of Securities
pursuant to this Agreement has not been reviewed or approved by the SEC or by
any state securities commission, authority or agency, and is not registered
under the Act or under the securities or "blue sky" laws, rules or regulations
of any state. Subscriber acknowledges, understands and agrees that the
Securities are being offered and sold hereunder pursuant to (i) a private
placement exemption to the registration provisions of the Act pursuant to
Section 3(b) or Section 4(2) of such Act and Regulation D promulgated under such
Act, and (ii) a similar exemption to the registration provisions of applicable
state securities laws. Subscriber understands that the Company is relying upon
the truth and accuracy of the representations, warranties, agreements,
acknowledgments and understandings of Subscriber set forth herein in order to
determine the applicability of such exemptions and the suitability of Subscriber
to acquire the Securities.

               2.10 Investment Intent. Without limiting its ability to resell
the Securities pursuant to an effective registration statement, Subscriber is
acquiring the Securities solely for its own account and not with a view to the
distribution, assignment or resale to others. Subscriber understands and agrees
that it may bear the economic risk of its investment in the Securities for an
indefinite period of time.

                                       5
<PAGE>   6

               2.11 No Advertisements. Subscriber is not subscribing for the
Securities as a result of or subsequent to any advertisement, article, notice or
other communication published in any newspaper, magazine, or similar media or
broadcast over television or radio, or presented at any seminar or meeting.

               2.12 Restricted Securities. Subscriber hereby confirms that it
has been informed that the Securities will be, when issued, restricted
securities under the Act and may not be resold or transferred unless first
registered under the federal securities laws or unless an exemption from such
registration is available with respect to a resale in the United States or in an
"offshore transaction" (as such term is defined in Regulations S under the Act).
Accordingly, Subscriber hereby acknowledges that it is prepared to hold the
Securities for an indefinite period. Subscriber is aware that Rule 144
promulgated by the SEC under the Act is not presently available to exempt the
sale of the Securities from the registration requirements of the Act. Subscriber
is aware that Rule 144 and Regulation S, promulgated under the Act, permit
limited public resales of securities acquired in non-public offerings, subject
to the satisfaction of certain conditions. Subscriber understands that under
Rule 144 the conditions include, among other things: the availability of certain
current public information about the issuer, the resale occurring not fewer than
one (1) year or two (2) years, as applicable, after the party has purchased and
paid for the securities to be sold, the sale being through a broker in an
unsolicited "broker's transaction" and the amount of securities being sold
during any three-month period not exceeding specified volume limitations.
Subscriber acknowledges and understands that the Company may not be satisfying
the current public information requirement of Rule 144 at the time Subscriber
wishes to sell the Securities, or other conditions under Rule 144 which are
required of the Company. Subscriber understands that Regulation S, as currently
in effect, allows resales in private and public transactions in certain
circumstances, only in qualified offshore transactions and only when certain
holding periods of at least one (1) year have been fulfilled. Subscriber
understands that he or she may be precluded from selling any of the Securities
under Rule 144 or Regulation S even if the holding periods have been satisfied
either because the other conditions may not have been fulfilled or because
markets for resales do not exist. Prior to its acquisition of the Securities,
Subscriber acquired sufficient information about the Company to reach an
informed and knowledgeable decision to acquire the Securities. Subscriber has
such knowledge and experience in financial and business matters as to make it
capable of utilizing said information to evaluate the risks of the prospective
investment and to make an informed investment decision.

               2.13. Authorized Shares. Subscriber hereby acknowledges that, as
of the Closing Date, the Company may not be able to reserve from its authorized
but unissued shares of Common Stock a sufficient number of shares of Common
Stock to permit the exercise in full of all of the outstanding Warrants.
Subscriber understands that the Company is currently taking steps to increase
the number of authorized shares of Common Stock.

        SECTION 3. REPRESENTATIONS AND WARRANTIES OF THE COMPANY. For so long as
any shares of Preferred Stock held by any Subscriber remain outstanding, the
Company acknowledges, represents, warrants and agrees as follows:

                                       6
<PAGE>   7

               3.1 Organization/Qualification. The Company is a corporation duly
organized and validly existing under the laws of the State of Delaware and is in
good standing under such laws. The Company has all requisite corporate power and
authority to own, lease and operate its properties and assets, and to carry on
its business as presently conducted. The Company is qualified to do business as
a foreign corporation in each jurisdiction in which the ownership of its
property or the nature of its business requires such qualification, except where
failure to so qualify would not have a material adverse effect on the Company.

               3.2 Accuracy of Reports and Information. The Company is in
compliance, to the extent applicable, with all reporting obligations under
either Section 12(b), 12(g) or 15(d) of the 1934 Act, and shall maintain such
status on a timely basis. The Company has registered its Common Stock pursuant
to Section 12 of the 1934 Act and the Common Stock is listed and trades on the
OTC Bulletin Board. The Company has filed all material required to be filed
pursuant to all reporting obligations, under either Section 13(a) or 15(d) of
the 1934 Act for a period of at least twelve (12) months immediately preceding
the offer and sale of the Securities (or for such shorter period that the
Company has been required to file such material).

               3.3 SEC Filings/Full Disclosure. For a period of at least twelve
(12) months immediately preceding the Closing Date, to the Company's knowledge:
(i) none of the Company's filings with the SEC contain any untrue statement of a
material fact or omit to state any material fact required to be stated therein
or necessary to make the statements therein in light of the circumstances under
which they were made, not misleading; and (ii) the Company has timely (after
giving effect to any filings on Form 12b-25) filed all requisite forms, reports
and exhibits thereto with the SEC.

               There is no fact known to the Company (other than general
economic conditions known to the public generally) that has not been publicly
disclosed by the Company or disclosed in writing to Subscribers which (i) could
reasonably be expected to have a material adverse effect on the condition
(financial or otherwise) or on earnings, business affairs, properties or assets
of the Company, or (ii) could reasonably be expected to materially and adversely
affect the ability of the Company to perform its obligations pursuant to this
Agreement.

               3.4 Authorization. The Company has all requisite corporate right,
power and authority to execute and deliver this Agreement and to consummate the
transactions contemplated hereby. All corporate action on the part of the
Company, its directors and stockholders necessary for the authorization,
execution, delivery and performance of this Agreement by the Company, the
authorization, sale, issuance and delivery of the Securities and the performance
of the Company's obligations hereunder has been taken. This Agreement has been
duly executed and delivered by the Company and constitutes a legal, valid and
binding obligation of the Company enforceable in accordance with its terms,
subject to laws of general application relating to bankruptcy, insolvency and
the relief of debtors and rules of law governing specific performance,
injunctive relief or other equitable remedies, and to limitations of public
policy as they may apply to the indemnification provisions set forth in this
Agreement. Upon their issuance and delivery pursuant to this Agreement, the
Securities will be validly issued, fully paid and non-assessable and will be
free of any liens or encumbrances; provided, however, that the Securities are
subject to restrictions on transfer under

                                       7
<PAGE>   8

state and/or federal securities laws. The issuance and sale of the Securities
will not give rise to any preemptive right or right of first refusal or right of
participation on behalf of any person.

               3.5 No Conflict. The execution and delivery of this Agreement do
not, and the consummation of the transactions contemplated hereby will not,
conflict with, or result in any violation of, or default under, or give rise to
a right of termination, cancellation or acceleration of any material obligation
or to a loss of a material benefit with respect to, any provision of the
Company's Certificate of Incorporation and any amendments thereto, Bylaws, or
any material mortgage, deed of trust, indenture, lease or other agreement or
instrument, permit, concession, franchise, license, judgment, order, decree
statute, law, ordinance, rule or regulation applicable to the Company, its
properties or assets, which would have a material adverse effect on the
Company's business and financial condition.

               3.6 No Undisclosed Liabilities or Events. The Company has no
liabilities or obligations other than those disclosed in the Reports, this
Agreement or those incurred in the ordinary course of the Company's business
since December 31, 1998, and which individually or in the aggregate, do not or
would not have a material adverse effect on the properties, business, condition
(financial or otherwise), results of operations or prospects of the Company. No
event or circumstance has occurred or exists with respect to the Company or its
properties, business, condition (financial or otherwise), results of operations
or prospects, which, under applicable law, rule or regulation, requires public
disclosure or announcement prior to the date hereof by the Company but which has
not been so publicly announced or disclosed.

               3.7 No Default. Except as set forth in this Agreement, the
Reports or on Schedule C annexed hereto, The Company is not in default in the
performance or observance of any material obligation, agreement, covenant or
condition contained in any indenture, mortgage, deed of trust or other material
instrument or agreement to which it is a party or by which it is or its property
is bound, and neither the execution, nor the delivery by the Company, nor the
performance by the Company of its obligations under this Agreement, including
the conversion or exercise provision of the Securities, will conflict with or
result in the breach or violation of any of the terms or provisions of, or
constitute a default or result in the creation or imposition of any lien or
charge on any assets or properties of the Company under, any material indenture,
mortgage, deed of trust or other material agreement applicable to the Company or
instrument to which the Company is a party or by which it is bound or any
statute or the Certificate of Incorporation or Bylaws of the Company, or any
decree, judgment, order, rule or regulation of any court or governmental agency
or body having jurisdiction over the Company or its properties, or the Company's
listing agreement for its Common Stock.

               3.8 Absence of Events of Default. Except as set forth in this
Agreement, the Reports or on Schedule C annexed hereto, no default, as defined
in the respective agreement to which the Company is a party, and no event which,
with the giving of notice or the passage of time or both, would become a
default, has occurred and is continuing, which would have a material adverse
effect on the Company's business, properties, prospects, condition (financial or
otherwise) or results of operations.

                                       8
<PAGE>   9

               3.9 Governmental Consent, etc. No consent, approval or
authorization of, or designation, declaration or filing with, any governmental
authority on the part of the Company is required in connection with the valid
execution and delivery of this Agreement, or the offer, sale or issuance of the
Securities, or the consummation of any other transaction contemplated hereby,
except as may be required by applicable securities laws.

               3.10 Intellectual Property Rights. Except as disclosed in the
Reports, the Company has sufficient trademarks, trade names, patent rights,
copyrights and licenses to conduct its business as presently conducted in the
Reports. To the Company's knowledge, and except as disclosed in the Reports,
neither the Company nor its products is infringing or will infringe any
trademark, trade name, patent right, copyright, license, trade secret or other
similar right of others currently in existence; and there is no claim being made
against the Company regarding any trademark, trade name, patent, copyright,
license, trade secret or other intellectual property right which could have a
material adverse effect on the business or financial condition of the Company.

               3.11 Material Contracts. Except as set forth in the Reports, the
agreements to which the Company is a party described in the Reports are valid
agreements, in full force and effect, and the Company is not in material breach
or material default under any of such agreements.

               3.12 Litigation. Except as disclosed in the Reports, there is no
action, proceeding or investigation pending, or to the Company's knowledge
threatened, against the Company which might result, either individually or in
the aggregate, in any material adverse change in the business, prospects,
conditions, affairs or operations of the Company. The Company is not a party to
or subject to the provisions of any order, writ, injunction, judgment or decree
of any court or government agency or instrumentality.

               3.13 Title to Assets. Except as set forth in Reports, the Company
has good and marketable title to all properties and material assets described in
the Reports as owned by it, free and clear of any pledge, lien, security
interest, encumbrance, claim or equitable interest other than such as are not
material to the business of the Company.

               3.14 Subsidiaries. Except as disclosed in the Reports, the
Company does not presently own or control, directly or indirectly, any interest
in any other corporation, partnership, association or other business entity.

               3.15 Required Governmental Permits. The Company is in possession
of and operating in compliance with all authorizations, licenses, certificates,
consents, orders and permits from state, federal and other regulatory
authorities which are material to the conduct of its business, all of which are
valid and in full force and effect.

               3.16 Listing. The Company will use its best efforts to maintain
the listing of its Common Stock on the OTC Bulletin Board or another organized
United States market or quotation system. The Company has not received any
notice, oral or written, regarding continued listing and,

                                       9
<PAGE>   10

as long as the Preferred Stock is outstanding, the Company will take no action
which would impact their continued listing or eligibility of the Company for
such listing.

               3.17 Other Outstanding Securities/Financing Restrictions. Except
as disclosed in the Reports, the Company has no outstanding restricted shares,
or shares of Common Stock sold under Regulation S, Regulation D or outstanding
under any other exemption from registration, which are available for sale as
unrestricted ("free trading") stock.

               3.18 Registration Alternative. The Company covenants and agrees
that for so long as any of the Common Stock issued upon conversion of the
Preferred Stock remain outstanding and continue to be "restricted securities"
within the meaning of Rule 144 under the Act, the Company shall permit resales
of the underlying Common Stock pursuant to Rule 144 under the Act. The Company
and Subscribers shall provide the Company's transfer agent any and all papers
necessary to complete the transfer under Rule 144, including, but not limited
to, opinions of counsel to such transfer agent, and the Company shall continue
to file all material required to be filed pursuant to Sections 13(a) or 15(d) of
the 1934 Act.

               3.19 Capitalization. The authorized capital stock of the Company
consists of 50,000,000 shares of Common Stock, $0.01 par value per share, of
which 43,033,477 shares were outstanding as of December 14, 1999, and 1,000,000
shares of preferred stock, $0.01 par value per share, none of which are
outstanding as of the date hereof. All issued and outstanding shares of Common
Stock have been duly authorized and validly issued and are fully paid and
nonassessable.

        SECTION 4. COVENANTS OF THE COMPANY. For so long as any shares of
Preferred Stock held by Subscribers remain outstanding, the Company
acknowledges, represents, warrants and agrees as follows:

                (i)     The Company shall use its best efforts to reserve, prior
                        to February 15, 2000, a sufficient number of shares of
                        Common Stock from its authorized but unissued shares of
                        Common Stock to permit the exercise in full of all of
                        the outstanding Warrants. The Company is currently
                        organizing a stockholder meeting to increase the number
                        of authorized shares of Common Stock of the Company, and
                        has filed with the SEC prior to the date hereof a
                        preliminary proxy statement in connection with such
                        stockholder meeting.

                (ii)    It will maintain the listing of its Common Stock on the
                        OTC Bulletin Board.

                (iii)   It will permit Subscribers to exercise its right to
                        convert the Preferred Stock by telecopying an executed
                        and completed Notice of Conversion (in the form of
                        Exhibit B annexed hereto) to the Company and delivering
                        the original Notice of Conversion and the certificates
                        representing the Preferred Stock to the Company by
                        overnight courier. Each business date on which a Notice
                        of Conversion is telecopied to and received by the
                        Company in accordance with the provisions hereof shall
                        be deemed a "Conversion Date". The Company

                                       10
<PAGE>   11

                        will transmit the certificates representing shares of
                        Common Stock issuable upon conversion of any Preferred
                        Stock (together with the certificates representing the
                        Preferred Stock not so converted) to the Subscriber via
                        overnight courier, by electronic transfer or otherwise
                        within three (3) business days after the Conversion Date
                        if the Company has received the original Notice of
                        Conversion and Preferred Stock Certificate being
                        converted by such date. In addition to any other
                        remedies which may be available to Subscribers, in the
                        event that the Company fails to effect delivery of such
                        shares of Common Stock within such three (3) business
                        day period, the Subscriber will be entitled to revoke
                        the relevant Notice of Conversion by delivering a notice
                        to such effect to the Company whereupon the Company and
                        the Subscriber shall each be restored to their
                        respective positions immediately prior to delivery of
                        such Notice of Conversion. The Notice of Conversion and
                        Preferred Stock representing the portion of the
                        Preferred Stock converted shall be delivered as follows:

                        If to the Company:

                              Spatializer Audio Laboratories, Inc.
                              20700 Ventura Boulevard, Suite 140
                              Woodland Hills, CA  91364-2357
                              Fax: (818) 227-9751
                              Attn: Henry R. Mandell,
                              Interim Chief Executive Officer

                        If to Subscribers, at the respective addresses set forth
                        on Schedule A.

        SECTION 5. RULE 144 REPORTING. With a view to making available the
benefits of certain rules and regulations of the SEC which may at any time
permit the sale of the Securities to the public without registration, the
Company agrees to:

                (i)     make and keep public information available, as those
                        terms are understood and defined in Rule 144 under the
                        Act, at all times after the effective date on which the
                        Company becomes subject to the reporting requirements of
                        the Act or the 1934 Act;

                (ii)    file with the SEC in a timely manner all reports and
                        other documents required of the Company under the Act
                        and the 1934 Act;

                (iii)   furnish to Subscribers forthwith, upon request, a
                        written statement by the Company as to its compliance
                        with the reporting requirements of said Rule 144, and of
                        the Act and the 1934 Act, a copy of the most recent
                        annual or quarterly report of the Company, and such
                        other reports and documents of the Company and other
                        information in the possession of or reasonably
                        obtainable by the Company as any Subscriber may
                        reasonably request in availing itself

                                       11
<PAGE>   12

                        of any rule or regulation of the SEC allowing
                        Subscribers to sell any such Securities without
                        registration.

        SECTION 6. INDEMNIFICATION. The Company and Subscribers agree to
indemnify the other and to hold the other harmless from and against any and all
losses, damages, liabilities, costs and expenses (including reasonable
attorneys' fees and costs) which the other may sustain or incur in connection
with the breach by the indemnifying party of any representation, warranty or
covenant made by it in this Agreement.

        SECTION 7. RESTRICTIONS ON CONVERSION OF PREFERRED STOCK. Subscribers
acknowledge that any shares of Preferred Stock issued to it hereunder shall not
be convertible into shares of Common Stock at any time prior to one year after
the Closing Date.

        SECTION 8. MANDATORY CONVERSION. In the event the Preferred Stock has
not been converted three (3) years from the Closing Date, at that time the
Preferred Stock shall be automatically converted (and all dividends owed thereon
shall be paid by the Company) as if Subscribers voluntarily elected such
conversion in accordance with the procedure, terms and conditions set forth in
this Agreement.

        SECTION 9. REGISTRATION OR EXEMPTION REQUIREMENTS. Subscribers
acknowledge and understand that the Securities may not be resold or otherwise
transferred except in a transaction registered under the Act and any applicable
state securities laws, or unless an exemption from such registration is
available. Subscribers understand that the Securities will be imprinted with a
legend that prohibits the transfer of the Securities unless (i) they are
registered or such registration is not required, and (ii) if the transfer is
pursuant to an exemption from registration other than Rule 144 under the Act
and, if the Company shall so request in writing, an opinion of counsel
reasonably satisfactory to the Company is obtained to the effect that the
transaction is so exempt.

        SECTION 10. LEGEND. The certificates representing the Securities,
including shares of Common Stock to be issued upon conversion of the Preferred
Stock, shall bear a legend restricting transfer under the Act, such legend to be
substantially as follows:

               THESE SECURITIES HAVE BEEN ACQUIRED FOR INVESTMENT AND HAVE NOT
               BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
               "ACT"). SUCH SECURITIES MAY NOT BE OFFERED OR SOLD OR TRANSFERRED
               IN THE UNITED STATES OR TO U.S. PERSONS IN THE ABSENCE OF SUCH
               REGISTRATION OR AN EXEMPTION THEREFROM UNDER THE ACT WHICH,
               EXCEPT IN THE CASE OF AN EXEMPTION PURSUANT TO RULE 144 UNDER THE
               ACT, IS CONFIRMED IN A LEGAL OPINION SATISFACTORY TO THE COMPANY.

The certificates representing these Securities, and each certificate issued in
transfer thereof, will also bear any legend required under any applicable state
securities law.

                                       12
<PAGE>   13

        SECTION 11. CLOSING DATE. The Closing Date hereunder shall be December
29, 1999, or such earlier date on or before December 31, 1999 on which the terms
and conditions hereof are satisfied (the "Closing Date"), and all acts,
deliveries and confirmations comprising the Closing Date regardless of
chronological sequence, shall be deemed to occur contemporaneously and
simultaneously, and such acts, deliveries, or confirmations shall not be
effective unless and until the last of same shall have occurred, and as shall be
mutually agreed upon as to time and place.

        SECTION 12. CONDITIONS TO THE COMPANY'S OBLIGATION TO SELL. Subscribers
understand that the Company's obligation to sell the Preferred Stock is
conditioned upon:

                (i)     The receipt and acceptance by the Company of this
                        Subscription Agreement and all Exhibits thereto, duly
                        executed by the Subscribers;

                (ii)    Delivery by Subscribers of the all written documentation
                        evidencing or relating to the Existing Indebtedness for
                        cancellation as payment in full for the purchase of the
                        Securities;

                (iii)   All representations and warranties of Subscribers set
                        forth in this Agreement shall remain true and correct as
                        of the Closing Date; and

                (iv)    The sale and issuance of the Preferred Stock shall be
                        legally permitted by all laws and regulations to which
                        Subscribers and the Company are subject.

        SECTION 13. CONDITIONS TO SUBSCRIBERS' OBLIGATION TO PURCHASE. The
Company understands that Subscribers' obligation to purchase the Preferred Stock
is conditioned upon:

                (i)     Acceptance by Subscribers of a satisfactory Subscription
                        Agreement and all duly executed Exhibits hereto for the
                        sale of the Securities;

                (ii)    Delivery of the original Preferred Stock;

                (iii)   All representations and warranties of the Company
                        contained herein shall remain true and correct as of the
                        Closing Dates; and

                (iv)    At the Closing Date, the sale and issuance of the
                        Preferred Stock shall be legally permitted by all laws
                        and regulations to which the Company and Subscribers are
                        subject.

        SECTION 14. MISCELLANEOUS.

        14.1 Governing Law/Jurisdiction. This Agreement will be construed and
enforced in accordance with and governed by the laws of the State of California
except for matters arising under the Act, without reference to principles of
conflicts of law. Each of the parties consents to the jurisdiction of the
federal courts whose districts encompass any part of the State of California or
the state courts of the State of California in connection with any dispute
arising under this Agreement

                                       13
<PAGE>   14

and hereby waives, to the maximum extent permitted by law, any objection,
including any objection based on forum non conveniens, to the bringing of any
such proceeding in such jurisdictions. Each party hereby agrees that if another
party to this Agreement obtains a judgment against it in such a proceeding, the
party which obtained such judgment may enforce same by summary judgment in the
courts of any state or country having jurisdiction over the party against whom
such judgment was obtained, and each party hereby waives any defenses available
to it under local law and agrees to the enforcement of such a judgment. Each
party to this Agreement irrevocably consents to the service of process in any
such proceeding by the mailing of copies thereof by registered or certified
mail, postage prepaid, to such party at its address set forth herein. Nothing
herein shall affect the right of any party to serve process in any other manner
permitted by law.

               14.2 Confidentiality. The Company and Subscribers agree to keep
confidential and not to disclose to or use for the benefit of any third party
the terms of this Agreement or any other information which at any time is
communicated by the other party as being confidential without the prior written
approval of the other party; provided, however, that this provision shall not
apply to information which, at the time of disclosure, is already part of the
public domain (except by breach of this Agreement) and information which is
required to be disclosed by law. If for any reason the transactions contemplated
by this Agreement are not consummated, each of the parties hereto shall keep
confidential any information obtained from any other party, except information
publicly available or in such party's domain prior to the date hereof, and
except as required by court order and shall promptly return to the other parties
all schedules, documents, instruments, work papers or other written information,
without retaining copies thereof, previously furnished by it as a result of this
Agreement or in connection herewith.

               14.3 Facsimile/Counterparts. Except as otherwise stated herein,
in lieu of the original, a facsimile transmission or copy of the original shall
be as effective and enforceable as the original. This Agreement may be executed
in counterparts which shall be considered an original document and which
together shall be considered a complete document.

               14.4 Severability. In the event that any provision of this
Agreement becomes or is declared by a court of competent jurisdiction to be
illegal, unenforceable or void, this Agreement shall continue in full force and
effect without said provision; provided that no such severability shall be
effective if it materially changes the economic benefit of this Agreement to any
party.

               14.5 Entire Agreement. This Agreement and Exhibits hereto
constitute the entire agreement between Subscribers and the Company with respect
to the subject matter hereof. This Agreement may be amended only by a writing
executed by all parties.

               14.6 Reliance by Company. Each Subscriber represents to the
Company that its representations and warranties contained herein are complete
and accurate and may be relied upon by the Company in determining the
availability of an exemption from registration under federal and state
securities laws in connection with a private offering of securities.

                                       14
<PAGE>   15

               14.7 Legal Fees and Expenses. Each of the parties shall pay its
own fees and expenses (including the fees of any accountants, appraisers or
others engaged by such party) in connection with this Agreement and the
transactions contemplated hereby.

               14.8 Authorization. Each of the parties hereto represents that
the individual executing this Agreement on its behalf has been duly and
appropriately authorized to execute the Agreement.

               14.9 Restriction on Trading. Each Subscriber hereby agrees that,
during the ten (10) trading days immediately preceding any Conversion Date (as
defined in the New Note) and the ten (10) trading days immediately following the
issuance of Common Stock in respect of such conversion, it shall not, whether
directly or indirectly: (i) buy or sell, or make or accept any offer to buy or
sell, any shares of capital stock of the Company; or (ii) buy or sell, or make
or accept any offer to buy or sell, any derivative security based on or relating
to any capital stock of the Company (including without limitation options to buy
or sell shares of capital stock of the Company). Each Subscriber hereby further
agrees not to engage in any short sales of any shares of capital stock of the
Company for so long as any of its shares of Preferred Stock remain issued and
outstanding. No Subscriber shall be entitled to convert its Preferred Stock into
Common Stock until ten (10) consecutive trading days have elapsed during which
it has not engaged in any of the transactions prohibited by this Section 14.9.

                  [Remainder of Page Intentionally Left Blank]

                                       15
<PAGE>   16

               IN WITNESS WHEREOF, this Agreement was duly executed on and as of
the date first written below.

Agreed to and Accepted on this 29th day
of December, 1999:

SPATIALIZER AUDIO LABORATORIES, INC., a
Delaware corporation

By:  /S/  Henry R. Mandell
   ----------------------------------
Name:
     --------------------------------
Title:
      -------------------------------

                                     CLARION FINANZ, A.G., a Swiss corporation

                                     By: /S/  C. Civelli
                                        ----------------------------------------
                                     Name:  Carlo Civelli
                                          --------------------------------------
                                     Title:  Director
                                           -------------------------------------

                                     /S/  C. Civelli
                                     -------------------------------------------
                                     CARLO CIVELLI, an individual

                                     /S/  Henry R. Mandell
                                     -------------------------------------------
                                     HENRY R. MANDELL, an individual

                                     /S/  James D. Pace
                                     -------------------------------------------
                                     JAMES D. PACE, an individual

                                       16
<PAGE>   17

                                     /S/  Jerold H. Rubinstein
                                     -------------------------------------------
                                     JEROLD H. RUBINSTEIN, an individual

                                     /S/  Gilbert N. Segel
                                     -------------------------------------------
                                     GILBERT N. SEGEL, an individual

                                     ATON SELECT FUND, LTD., a Swiss corporation

                                     By:  /S/  Jan Barcikoski
                                        ----------------------------------------
                                     Name:  Jan Barcikoski
                                          --------------------------------------
                                     Title:  Director
                                           -------------------------------------

                                     ROMOFIN A.G., a Swiss corporation

                                     By:  /S/  B. J. Mosimann
                                        ----------------------------------------
                                     Name:  B. J. Mosimann
                                          --------------------------------------
                                     Title:  President
                                           -------------------------------------

                                       17
<PAGE>   18

                                   SCHEDULE A

<TABLE>
<CAPTION>
                                                                                     NUMBER OF SHARES
SUBSCRIBER                                  ADDRESS                                 OF PREFERRED STOCK
<S>                                         <C>                                     <C>
Clarion Finanz, A.G., a Swiss corporation   Seefeldstrasse 214                            76,651
                                            8034, Zurich, Switzerland

Carlo Civelli, an individual                Seefeldstrasse 214                            8,259
                                            8034, Zurich, Switzerland

Henry R. Mandell, an individual             20700 Ventura Boulevard, Suite 140             551
                                            Woodland Hills, CA  91364

James D. Pace, an individual                                                               551

Jerold H. Rubinstein, an individual                                                        551

Gilbert N. Segel, an individual                                                            550

Aton Select Fund, Ltd., a Swiss             Seefeldstrasse 214                            5,336
corporation                                 8034, Zurich, Switzerland

Romofin A.G., a Swiss corporation           Seefeldstrasse 214                            10,518
                                            8034, Zurich, Switzerland
                                                                                  =======================
                                                                         TOTAL:          102,967
</TABLE>

<PAGE>   19

                                   SCHEDULE B

<TABLE>
<CAPTION>
                            NOTE, LETTER OR OTHER AGREEMENT                         EXISTING INDEBTEDNESS
SUBSCRIBER                  REGARDING EXISTING INDEBTEDNESS                        AS OF DECEMBER 29, 1999
----------                  -------------------------------                        -----------------------
<S>                         <C>                                                    <C>
Clarion Finanz, A.G., a     Nonnegotiable Unsecured Promissory Note, issued on          $ 766,506.85
Swiss corporation           April 14, 1998, in the original principal amount of
                            $650,000.

Carlo Civelli, an           Nonnegotiable Secured Promissory Note, issued on             $ 82,582.19
individual                  December 14, 1998 (participant in the original
                            principal amount of $75,000).

Henry R. Mandell, an        Nonnegotiable Secured Promissory Note, issued on              $ 5,508.22
individual                  December 14, 1998 (participant in the original
                            principal amount of $5,000).

James D. Pace, an           Nonnegotiable Secured Promissory Note, issued on              $ 5,508.22
individual                  December 14, 1998 (participant in the original
                            principal amount of $5,000).

Jerold H. Rubinstein, an    Nonnegotiable Secured Promissory Note, issued on              $ 5,508.22
individual                  December 14, 1998 (participant in the original
                            principal amount of $5,000).

Gilbert N. Segel, an        Nonnegotiable Secured Promissory Note, issued on              $ 5,498.63
individual                  December 14, 1998 (participant in the original
                            principal amount of $5,000).

Aton Select Fund, Ltd., a   ________________________________ in the original             $ 53,356.16
Swiss corporation           principal amount of $50,000.

Romofin A.G., a Swiss       ________________________________ in the original            $ 105,178.08
corporation                 principal amount of $100,000.

                                                                                   =======================
                                                                     TOTAL:           $ 1,029,646.57
</TABLE>

<PAGE>   20

                                   SCHEDULE C

1.      The Company has failed to pay at the stated maturity on December 31,
        1998, the principal and accrued interest due under that certain
        Nonnegotiable Unsecured Promissory Note, issued April 14, 1998, by the
        Company to Clarion Finanz, A.G. in the original principal amount of
        US$650,000.00. This note is being restructured on or before January 1,
        2000, by agreement between the parties.

2.      The Company has failed to pay at the stated maturity on November 30,
        1999, the principal and accrued interest due under that certain
        Nonnegotiable Secured Promissory Note, issued December 14, 1998, by the
        Company to Carlo Civelli and certain officers and directors of the
        Company in the original principal amount of US$95,000.00. This note is
        being restructured on or before January 1, 2000, by agreement between
        the parties.

<PAGE>   21

                                    EXHIBIT A

   Certificate of Designation of the 10% Convertible Series B Preferred Stock

<PAGE>   22

                           CERTIFICATE OF DESIGNATION
                                       OF
               SERIES B 10% REDEEMABLE CONVERTIBLE PREFERRED STOCK
                                       OF
                      SPATIALIZER AUDIO LABORATORIES, INC.

        Pursuant to Section 151 of the General Corporation Law ("GCL") of the
State of Delaware, and the Bylaws of SPATIALIZER AUDIO LABORATORIES, INC., a
Delaware corporation (the "Company"), we the undersigned, being President and
Secretary, respectively, DO HEREBY CERTIFY, that the following resolution was
duly adopted by the Board of Directors on December 24, 1999:

        RESOLVED, that pursuant to the authority conferred upon the Board of
Directors by the Company's Certificate of Incorporation and Bylaws, the Board of
Directors hereby provides for the issuance of a series of Preferred Stock of the
Company consisting of 150,000 authorized shares which shall have the voting
powers, designations, preferences and relative participating, optional or other
rights, if any, and the qualifications, limitations, or restrictions, set forth
in such Certificate of Incorporation, and in addition thereto, the following:

        Section 1. Designation and Amount. The series of Preferred Stock hereby
created shall be designated as the "Series B Preferred Stock", shall have a par
value of $0.01 per share and the number of shares constituting the Series B
Preferred Stock shall be 150,000 shares. The Series B Preferred Stock shall have
a stated value of US$10.00 per share, with a 10% per annum dividend as set forth
herein.

        Section 2. Rank. The Series B Preferred Stock shall rank: (i) prior to
all of the Company's Common Stock, par value $0.01 per share ("Common Stock"),
(ii) prior to any class or series of capital stock of the Company hereafter
created (unless such future class specifically, by its terms, ranks on parity
with the Series B Preferred Stock), and (iii) junior to any class or series of
capital stock of the Company created before the date hereof (including without
limitation the Series A Preferred Stock of the Company), in each case as to
distributions of assets upon liquidation, dissolution or winding up of the
Company, whether voluntary or involuntary (all such distributions being referred
to collectively as "Distributions").

        Section 3. Dividends. The Series B Preferred Stock will bear a 10% per
annum cumulative dividend, payable out of assets legally available therefor, at
the "Conversion Date" (as defined below) in cash or Common Stock at the
"Conversion Price" (as defined below), at the Company's option. No dividends
shall be paid on the Common Stock or any stock issued pursuant to Section 9
prior to the payment of dividends on Series B Preferred Stock.

        Section 4. Sinking Funding. No provisions shall be made for any sinking
fund.

<PAGE>   23

        Section 5. Liquidation Preference.

               (a) In the event of any liquidation, dissolution or winding up of
the Company, either voluntary or involuntary, the holders of Series B Preferred
Stock shall be entitled to receive an amount per share equal to the sum of (i)
US$10.00 for each outstanding share of Series B Preferred Stock, plus (ii) an
amount equal to all accrued and unpaid dividends which shall accrue through the
Conversion Date (the "Liquidation Preference"). If upon the occurrence of such
event, the assets and funds available to be distributed among the holders of the
Series B Preferred Stock shall be insufficient to permit the payment to such
holders of the full preferential amounts due to such holders, then the entire
assets and funds of the Company legally available for distribution shall be
distributed among the holders of the Series B Preferred Stock on a pro rata
basis.

               (b) Notwithstanding anything set forth above, holders of Series B
Preferred Stock shall not be entitled to receive more than the Liquidation
Preference in the event of any corporate reorganizations or any other
transaction (or series of related transactions) that results in the transfer of
more than fifty percent (50%) of the outstanding voting power of the Company,
and such transactions shall not constitute a liquidation, dissolution, or
winding up of the Company if the successor assumes that obligations of the
Company with respect to the Series B Preferred Stock. A sale, conveyance, or
other disposition of all or substantially all of the Company's assets, shall
constitute a liquidation, dissolution or winding up within the meaning of this
paragraph and shall entitle the holders of the Series B Preferred Stock to the
Liquidation Preference, to the extent available above. The purchase or
redemption by the Company of stock of any class, in any number permitted by law,
for the purpose of this paragraph, shall not be regarded as a liquidation,
dissolution or winding up of the Company.

        Section 6. Conversion. The record holders of this Series B Preferred
Stock shall have conversion rights as follows (the "Conversion Rights").

               (a) Right to Convert.

                    (1) The holders may not convert shares of Series B Preferred
Stock until December 29, 2000. On or after December 29, 2000, the holders shall
have the right, subject to Section 6(a)(2) below, to convert, in whole or in
part, shares of Series B Preferred Stock into shares of Common Stock based on
the conversion price per share defined below (the "Conversion Price"). The
number of shares of Common Stock to be issued to the holder upon conversion
shall be determined by (i) multiplying the number of shares of Series B
Preferred Stock to be converted by US$10.00, and (ii) dividing this product by
the Conversion Price, provided, however, that the Company shall not issue to any
holder a fraction of a share of Common Stock and shall instead round the number
of shares of Common Stock issued up to the next whole share of Common Stock.

                    (2) Upon an election by a holder to convert shares of Series
B Preferred Stock into shares of Common Stock, the Company shall have the right
to pay cash to such holder in lieu of issuing shares of Common Stock. If the
Company elects to pay cash rather than issuing shares of Common Stock, the
Company shall pay to the holder US$10.00 for each share of Series B

<PAGE>   24

Preferred Stock that such holder had elected to convert to shares of Common
Stock. The holder shall surrender the shares of Series B Preferred Stock to the
Company for cancellation.

                    (3) The "Conversion Price" shall be determined on the
Conversion Date, and shall equal Ninety percent (90%) of the average of the
closing bid prices of Common Stock for the ten (10) consecutive trading days
ending on the trading day immediately preceding the Conversion Date, provided,
however, that the Conversion Price shall under no circumstances: (i) be lower
than the average of the closing bid prices of Common Stock for the ten (10)
consecutive trading days ending one (1) trading day prior to December 29, 1999
(the "Floor Price"); or (ii) be higher than 200% of the Floor Price (the
"Ceiling Price"). The "closing bid price" shall mean the last bid price for
Common Stock on the OTC Bulletin Board, as reported by any authoritative source
acceptable to the Company.

                    (4) In the event of any stock split, reverse stock split,
stock dividend, reclassification or similar event affecting the Common Stock
(each an "Adjustment Transaction"), then both the Floor Price and the Ceiling
Price shall be adjusted by multiplying them by a fraction, the numerator of
which shall be the number of shares of Common Stock outstanding immediately
prior to such Adjustment Transaction, and the denominator of which shall be the
number of shares of Common Stock outstanding immediately after such Adjustment
Transaction.

               (b) Mechanics of Conversion. Conversion of the Series B Preferred
Stock to Common Stock may be exercised by holder telecopying an executed and
completed notice of conversion ("Notice of Conversion") to the Company, and
delivering the original Notice of Conversion and the certificate representing
the shares of Series B Preferred Stock to the Company by hand or by overnight
courier within three (3) business days of exercise. Each date on which a Notice
of Conversion is telecopied to and received by the Company in accordance with
the provisions hereof shall be deemed a "Conversion Date". The Company will
transmit the certificates representing the Common Stock issuable upon conversion
of all or any part of the shares of Series B Preferred Stock (together with any
certificates for replacement shares of Series B Preferred Stock not previously
converted but included in the original certificate presented for conversion) to
the holder via overnight courier within three (3) business days after the
Company has received the original Notice of Conversion and certificate for the
shares of Series B Preferred Stock being so converted. The Notice of Conversion
and certificate representing the portion of the shares of Series B Preferred
Stock converted shall be delivered as follows:

               To the Company:      Spatializer Audio Laboratories, Inc.
                                    20700 Ventura Blvd., Suite 140
                                    Woodland Hills, CA 91364-2357
                                    Attention: Henry Mandell
                                    Telephone: (818) 227-3370
                                    Facsimile: (818) 227-9751

or to such other person at such other place as the Company shall designate to
the holder in writing.

<PAGE>   25

               (c) Lost or Stolen Certificates. Upon receipt by the Company of
evidence of the loss, theft, destruction or mutilation of any certificates
representing shares of Series B Preferred Stock, and (in the case of loss, theft
or destruction) of indemnity or security reasonably satisfactory to the Company,
and upon surrender and cancellation of the certificate(s), if mutilated, the
Company shall execute and deliver new certificate(s) of like tenor and date.
However, the Company shall not be obligated to re-issue such lost or stolen
certificates if holder contemporaneously requests the Company to convert such
Series B Preferred Stock into Common Stock.

               (d) Mandatory Conversion. The Series B Preferred Stock is subject
to mandatory conversion after three (3) years from the Closing Date, at which
time all shares of Series B Preferred Stock will automatically be converted upon
the terms set forth in Section 6(a) at the Conversion Price in effect at such
time. Mandatory conversion shall not occur in the event of the occurrence of one
or both of the following at the time of such mandatory conversion: (x) the
Company is unable, or admits in writing its inability, to pay its debts, or is
not paying its debts generally as they come due, or has made any assignment for
the benefit of creditors; or (y) the Company has commenced, or there has been
commenced against the Company, any case, proceeding, or other action seeking to
have an order for relief entered with respect to the Company, or to adjudicate
the Company as a bankrupt or insolvent.

               (e) Reservation of Stock Issuable upon Conversion. As of the date
hereof, the Company may not be able to reserve from its authorized but unissued
shares of Common Stock a sufficient number of shares of Common Stock to permit
the conversion in full of all shares of Series B Preferred Stock. The Company is
currently organizing a stockholder meeting to increase the number of authorized
shares of Common Stock of the Company, and has filed with the SEC prior to the
date hereof a preliminary proxy statement in connection with such stockholder
meeting. After such time as the Company has increased the number of authorized
shares of Common Stock, it shall at all times thereafter reserve and keep
available out of its authorized but unissued shares of Common Stock, such number
of its shares of Common Stock as shall from time to time be sufficient to effect
the conversion of all then outstanding shares of Series B Preferred Stock at the
Floor Price.

               (f) Conversion Adjustments.

                    (1) Adjustment Due to Merger, Consolidation, Etc. If, prior
to the conversion of all Series B Preferred Stock, there shall be any merger,
consolidation, exchange of shares, recapitalization, reorganization, or other
similar event, as a result of which shares of Common Stock of the Company shall
be changed into the same or a different number of shares of another class or
classes of stock or securities of the Company or another entity, or other
property, then each holder of Series B Preferred Stock shall, upon being given
at least ten (10) business days advance written notice of such transaction,
thereafter have the right to purchase and receive, upon the basis and upon the
terms and conditions specified herein and in lieu of the shares of Common Stock
immediately theretofore issuable upon conversion, such shares of stock and/or
securities or other property as would have been issuable or payable with respect
to or in exchange for the number of shares of Common Stock purchasable and
receivable upon the conversion of Series B Preferred Stock held by such holder
immediately prior to the merger, consolidation, exchange of shares,

<PAGE>   26

recapitalization or reorganization. Appropriate provisions shall be made with
respect to the rights and interests of the holders of the Series B Preferred
Stock to the end that the provisions hereof shall thereafter be applicable, as
nearly as may be practicable in relation to any shares of stock or securities
thereafter deliverable upon the conversion thereof. The Company shall not effect
any transaction described in this subsection unless (1) each holder of Series B
Preferred Stock has been given at least ten (10) business days advance written
notice of such transaction, and (2) the resulting successor or acquiring entity
(if not the Company) assumes by written instrument the obligation to deliver to
the holders of the Series B Preferred Stock such shares of stock and/or
securities or other property as the holders of the Series B Preferred Stock
would be entitled to receive pursuant to this Section 6(f).

                    (2) No Fractional Shares. If any adjustment under this
Section would create a fractional share, or a right to acquire a fractional
share, of any security, such fractional share shall be disregarded and the
number of shares of such security issuable upon conversion shall be the next
higher number of shares.

        Section 7. Voting Rights. The holders of the Series B Preferred Stock
shall have no voting power whatsoever, except with respect to any amendment to
the Company's Certificate of Incorporation which would have an adverse effect on
the Series B Preferred Stock or as otherwise provided by the Delaware
Corporation Laws.

        Section 8. Status of Converted Stock. In the event any shares of Series
B Preferred Stock shall be converted pursuant to Section 6 hereof, or if the
Company has elected to pay cash to such holder pursuant to Section 6(a)(2) in
lieu of issuing shares of Common Stock, the shares of Series B Preferred Stock
so converted (or for which cash was paid in lieu of conversion) shall be
cancelled, shall return to the status of authorized but unissued Preferred Stock
of no designated series, and shall not be issuable by the Company as Series B
Preferred Stock.

        Section 9. Preference Rights. Nothing contained herein shall be
construed to prevent the Board of Directors of the Company from issuing one or
more series of Preferred Stock with dividend and/or liquidation preferences
junior to the dividend and liquidation preferences of the Series B Preferred
Stock.

        Section 10. Restrictions on Trading. Each holder of Series B Preferred
Stock shall agree that, during the ten (10) trading days immediately preceding
the Conversion Date, it shall not, whether directly or indirectly: (i) buy or
sell, or make or accept any offer to buy or sell, any shares of capital stock of
the Company; or (ii) buy or sell, or make or accept any offer to buy or sell,
any derivative security based on or relating to any capital stock of the Company
(including without limitation options to buy or sell shares of capital stock of
the Company). Each holder of Series B Preferred Stock shall also agree not to
engage in any short sales of any shares of capital stock of the Company for so
long as any of its shares of Series B Preferred Stock remain issued and
outstanding. No holder of Series B Preferred Stock shall be entitled to convert
its Series B Preferred Stock into Common Stock until ten (10) consecutive
trading days have elapsed during which such holder has not engaged in any of the
transactions prohibited by this Section 10.

<PAGE>   27

                  [Remainder of Page Intentionally Left Blank]

<PAGE>   28

        IN WITNESS THEREOF, the Company has caused the undersigned to sign this
Certificate of Designation this 24th day of December, 1999.

                                      SPATIALIZER AUDIO LABORATORIES, INC.

                                      By: /S/ Henry R. Mandell
                                         -----------------------------------
                                      Name:  Henry R. Mandell
                                      Title: Interim Chief Executive Officer

Attest:

By: /S/  Henry R. Mandell
   ------------------------------
Name: Henry R. Mandell
Title: Secretary

<PAGE>   29

                                    EXHIBIT B

                          Form of Notice of Conversion

<PAGE>   30

                              NOTICE OF CONVERSION

              (TO BE EXECUTED BY THE REGISTERED HOLDER IN ORDER TO
                CONVERT 10% CONVERTIBLE SERIES B PREFERRED STOCK)

        The undersigned hereby irrevocably elects to convert Preferred Stock
Certificate No. ______ into shares of Common Stock of Spatializer Audio
Laboratories, Inc. (the "Company") according to the conditions hereof, as of the
date written below.

        The undersigned represents and warrants that:

        (i) all offers and sales by the undersigned of the shares of Common
Stock issuable to the undersigned upon conversion of the Preferred Stock shall
be made pursuant to an exemption from registration under the Securities Act of
1933, as amended (the "Act"), or pursuant to registration of the Common Stock
under the Act, subject to any restrictions on sale or transfer set forth in the
10% Convertible Series B Preferred Stock Subscription Agreement between the
Company and the holder of the Preferred Stock submitted herewith for conversion;

        (ii) the undersigned has not engaged in any transaction or series of
transaction that is a part of or a plan or scheme to evade the registration
requirements of the Act; and

        (iii) upon conversion pursuant to this Notice of Conversion, the
undersigned will not own or be deemed to beneficially own (within the meaning of
the Securities Exchange Act of 1934, as amended) 4.99% or more of the then
issued and outstanding shares of the Company.

_______________________________________      ___________________________________
Conversion Date                              Applicable Conversion Price

_______________________________________      ___________________________________
Number of Common Shares upon Conversion      Dollar Amount of Conversion

_______________________________________      ___________________________________
Signature                                    Print Name

                                 Address:    ___________________________________

                                             ___________________________________

                                             ___________________________________

        The original certificate(s) of Preferred Stock and Notice of Conversion
must be received by the Company by the third (3rd) business day following the
Conversion Date.

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