<PAGE>
EXHIBIT 10.16


         THIS NOTE AND THE COMMON SHARES ISSUABLE UPON CONVERSION OF THIS NOTE
         HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED.
         THIS NOTE AND THE COMMON SHARES ISSUABLE UPON CONVERSION OF THIS NOTE
         MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED OR HYPOTHECATED IN THE
         ABSENCE OF AN EFFECTIVE REGISTRATION STATEMENT AS TO THIS NOTE UNDER
         SAID ACT OR AN OPINION OF COUNSEL REASONABLY SATISFACTORY TO ONE VOICE
         TECHNOLOGIES INC. THAT SUCH REGISTRATION IS NOT REQUIRED.


                                CONVERTIBLE NOTE
                                ----------------

         FOR VALUE RECEIVED, ONE VOICE TECHNOLOGIES INC., a Nevada corporation
(hereinafter called "Borrower"), hereby promises to pay to BRISTOL INVESTMENT
FUND, LTD., Caledonian House, Jennett Street, Georgetown, Grand Cayman, Cayman
Islands, Fax: 323-468-8307 (the "Holder") or order, without demand, the sum of
One Hundred and Fifty Thousand Dollars ($150,000.00), with simple interest
accruing at the annual rate of 4%, on November ___, 2004 (the "Maturity Date").

         This Note has been entered into pursuant to the terms of a subscription
agreement between the Borrower and the Holder, dated of even date herewith (the
"Subscription Agreement"), and shall be governed by the terms of such
Subscription Agreement. Unless otherwise separately defined herein, all
capitalized terms used in this Note shall have the same meaning as is set forth
in the Subscription Agreement. The following terms shall apply to this Note:

                                    ARTICLE I

                               GENERAL PROVISIONS

         1.1 PAYMENT GRACE PERIOD. The Borrower shall have a ten (10) day grace
period to pay any monetary amounts due under this Note, after which grace period
a default interest rate of fifteen percent (15%) per annum shall apply to the
amounts owed hereunder.

<PAGE>


         1.2 CONVERSION PRIVILEGES. The Conversion Privileges set forth in
Article II shall remain in full force and effect immediately from the date
hereof and until the Note is paid in full regardless of the occurrence of an
Event of Default. The Note shall be payable in full on the Maturity Date, unless
previously converted into Common Stock in accordance with Article II hereof;
provided, that if the Borrower violates or breaches in any material respect any
of its covenants or agreements to register the Registrable Securities pursuant
to Section 10 of the Subscription Agreement, the Borrower may not pay this Note
after the Maturity Date, without the consent of the Holder.

         1.3 INTEREST RATE. Simple interest payable on this Note shall accrue at
the annual rate of four percent (4%) and be payable upon each Conversion, March
31, 2003 and quarterly thereafter, and on the Maturity Date, accelerated or
otherwise, when the principal and remaining accrued but unpaid interest shall be
due and payable, or sooner as described below.

                                   ARTICLE II

                                CONVERSION RIGHTS

         The Holder shall have the right to convert the principal due under this
Note into Shares of the Borrower's Common Stock, $.001 par value per share
("Common Stock") as set forth below.

         2.1. CONVERSION INTO THE BORROWER'S COMMON STOCK.

         (a) The Holder shall have the right from and after the date of the
issuance of this Note and then at any time until this Note is fully paid, to
convert any outstanding and unpaid principal portion of this Note, and accrued
interest, at the election of the Holder (the date of giving of such notice of
conversion being a "Conversion Date") into fully paid and nonassessable shares
of Common Stock as such stock exists on the date of issuance of this Note, or
any shares of capital stock of Borrower into which such Common Stock shall
hereafter be changed or reclassified, at the conversion price as defined in
Section 2.1(b) hereof (the "Conversion Price"), determined as provided herein.
Upon delivery to the Borrower of a Notice of Conversion as described in Section
9 of the Subscription Agreement of the Holder's written request for conversion,
Borrower shall issue and deliver to the Holder within three business days from
the Conversion Date ("Delivery Date") that number of shares of Common Stock for
the portion of the Note converted in accordance with the foregoing. At the
election of the Holder, the Borrower will deliver accrued but unpaid interest on
the Note in the manner provided in Section 1.3 through the Conversion Date
directly to the Holder on or before the Delivery Date (as defined in the
Subscription Agreement). The number of shares of Common Stock to be issued upon
each conversion of this Note shall be determined by dividing that portion of the
principal of the Note and interest to be converted, by the Conversion Price.


<PAGE>

         (b) Subject to adjustment as provided in Section 2.1(c) hereof, the
Conversion Price per share shall be the lower of (i) $______ ("Maximum Base
Price") or (ii) eighty percent (80%) of the average of the five lowest closing
bid prices for the thirty (30) trading days prior to but not including the
Conversion Date for the Common Stock on the OTC Pink Sheets, NASD OTC Bulletin
Board, Bulletin Board Exchange, NASDAQ SmallCap Market, NASDAQ National Market
System, American Stock Exchange, or New York Stock Exchange, as applicable, or
if not then trading on any of the foregoing, such other principal market or
exchange where the Common Stock is listed or traded (whichever of the foregoing
is at the time the principal trading exchange or market for the Common Stock,
the "Principal Market"). Closing bid price shall mean the last closing bid price
as reported by Bloomberg Financial.

         (c) The Maximum Base Price and number and kind of shares or other
securities to be issued upon conversion determined pursuant to Section 2.1(a),
shall be subject to adjustment from time to time upon the happening of certain
events while this conversion right remains outstanding, as follows:

                  A. Merger, Sale of Assets, etc. If the Borrower at any time
shall consolidate with or merge into or sell or convey all or substantially all
its assets to any other corporation, this Note, as to the unpaid principal
portion thereof and accrued interest thereon, shall thereafter be deemed to
evidence the right to purchase such number and kind of shares or other
securities and property as would have been issuable or distributable on account
of such consolidation, merger, sale or conveyance, upon or with respect to the
securities subject to the conversion or purchase right immediately prior to such
consolidation, merger, sale or conveyance. The foregoing provision shall
similarly apply to successive transactions of a similar nature by any such
successor or purchaser. Without limiting the generality of the foregoing, the
anti-dilution provisions of this Section shall apply to such securities of such
successor or purchaser after any such consolidation, merger, sale or conveyance.

                  B. Reclassification, etc. If the Borrower at any time shall,
by reclassification or otherwise, change the Common Stock into the same or a
different number of securities of any class or classes, this Note, as to the
unpaid principal portion thereof and accrued interest thereon, shall thereafter
be deemed to evidence the right to purchase an adjusted number of such
securities and kind of securities as would have been issuable as the result of
such change with respect to the Common Stock immediately prior to such
reclassification or other change.

                  C. Stock Splits, Combinations and Dividends. If the shares of
Common Stock are subdivided or combined into a greater or smaller number of
shares of Common Stock, or if a dividend is paid on the Common Stock in shares
of Common Stock, the Conversion Price shall be proportionately reduced in case
of subdivision of shares or stock dividend or proportionately increased in the
case of combination of shares, in each such case by the ratio which the total
number of shares of Common Stock outstanding immediately after such event bears
to the total number of shares of Common Stock outstanding immediately prior to
such event.


<PAGE>

                  D. Share Issuance. So long as this Note is outstanding, if the
Borrower shall issue any shares of Common Stock except for the employee stock
options, or in connection with the exercise of Warrants, options or upon the
conversion of convertible instruments outstanding on the issue date of this Note
and as described in the Borrower's Reports (as defined in the Subscription
Agreement) for a consideration less than the Fair Market Value (as defined in
Section 2(c)(E) below) for such shares at the time of such issue, then, and
thereafter successively upon each such issue, the Conversion Price shall be
reduced as follows: (i) the number of shares of Common Stock outstanding
immediately prior to such issue shall be multiplied by the Conversion Price in
effect at the time of such issue and the product shall be added to the aggregate
consideration, if any, received by the Borrower upon such issue of additional
shares of Common Stock; and (ii) the sum so obtained shall be divided by the
number of shares of Common Stock outstanding immediately after such issue. The
resulting quotient shall be the adjusted Conversion Price. For purposes of this
adjustment, the issuance of any security of the Borrower carrying the right to
convert such security into shares of Common Stock or of any warrant, right or
option to purchase Common Stock shall result in an adjustment to the Conversion
Price upon the issuance of shares of Common Stock upon exercise of such
conversion or purchase rights.

                  E. For purposes of Section 2.1(c)(D) above, Fair Market Value
of a share of Common Stock as of a particular date (the "Determination Date")
shall mean the Fair Market Value of a share of the Borrower's Common Stock. Fair
Market Value of a share of Common Stock as of a Determination Date shall mean:

                           (a) If the Borrower's Common Stock is traded on an
                  exchange or is quoted on the National Association of
                  Securities Dealers, Inc. Automated Quotation ("NASDAQ")
                  National Market System, the NASDAQ SmallCap Market or the
                  American Stock Exchange, Inc., then the closing or last sale
                  price, respectively, reported for the last business day
                  immediately preceding the Determination Date.

                           (b) If the Borrower's Common Stock is not traded on
                  an exchange or on the NASDAQ National Market System, the
                  NASDAQ SmallCap Market or the American Stock Exchange, Inc.,
                  but is traded in the over-the-counter market, then the mean of
                  the closing bid and asked prices reported for the last
                  business day immediately preceding the Determination Date.

                           (c) Except as provided in clause (d) below, if the
                  Borrower's Common Stock is not publicly traded, then as the
                  Holder and the Borrower agree or in the absence of agreement
                  by arbitration in accordance with the rules then standing of
                  the American Arbitration Association, before a single
                  arbitrator to be chosen from a panel of persons qualified by
                  education and training to pass on the matter to be decided.


<PAGE>

                           (d) If the Determination Date is the date of a
                  liquidation, dissolution or winding up, or any event deemed to
                  be a liquidation, dissolution or winding up pursuant to the
                  Borrower's charter, then all amounts to be payable per share
                  to holders of the Common Stock pursuant to the charter in the
                  event of such liquidation, dissolution or winding up, plus all
                  other amounts to be payable per share in respect of the Common
                  Stock in liquidation under the charter, assuming for the
                  purposes of this clause (d) that all of the shares of Common
                  Stock then issuable upon exercise of all of the Warrants are
                  outstanding at the Determination Date.

                  F. Whenever the Conversion Price is adjusted pursuant to
Section 2.1(c)(D) above, the Borrower shall promptly mail to the Holder a notice
setting forth the Conversion Price after such adjustment and setting forth a
brief statement of the facts requiring such adjustment.

         (d) During the period the conversion right exists, Borrower will
reserve from its authorized and unissued Common Stock a sufficient number of
shares to provide for the issuance of Common Stock upon the full conversion of
this Note. Borrower represents that upon issuance, such shares will be duly and
validly issued, fully paid and non-assessable. Borrower agrees that its issuance
of this Note shall constitute full authority to its officers, agents, and
transfer agents who are charged with the duty of executing and issuing stock
certificates to execute and issue the necessary certificates for shares of
Common Stock upon the conversion of this Note.

         2.2 METHOD OF CONVERSION. This Note may be converted by the Holder in
whole or in part as described in Section 2.1(a) hereof and the Subscription
Agreement. Upon partial conversion of this Note, a new Note containing the same
date and provisions of this Note shall, at the request of the Holder, be issued
by the Borrower to the Holder for the principal balance of this Note and
interest which shall not have been converted or paid.

         2.3 MAXIMUM CONVERSION. The Holder shall not be entitled to convert on
a Conversion Date that amount of the Note in connection with that number of
shares of Common Stock which would be in excess of the sum of (i) the number of
shares of Common Stock beneficially owned by the Holder and its affiliates on a
Conversion Date, (ii) any Common Stock issuable in connection with the
unconverted portion of the Note, and (iii) the number of shares of Common Stock
issuable upon the conversion of the Note with respect to which the determination
of this provision is being made on a Conversion Date, which would result in
beneficial ownership by the Holder and its affiliates of more than 9.99% of the
outstanding shares of Common Stock of the Borrower on such Conversion Date. For
the purposes of the provision to the immediately preceding sentence, beneficial
ownership shall be determined in accordance with Section 13(d) of the Securities
Exchange Act of 1934, as amended, and Regulation 13d-3 thereunder. Subject to
the foregoing, the Holder shall not be limited to aggregate conversions of only
9.99% and aggregate conversion by the Holder may exceed 9.99%. The Holder shall
have the authority and obligation to determine whether the restriction contained
in this Section 2.3 will limit any conversion hereunder and to the extent that
the Holder determines that the limitation contained in this Section applies, the
determination of which portion of the Notes are convertible shall be the
responsibility and obligation of the Holder. The Holder may void the conversion
limitation described in this Section 2.3 upon 61 days prior written notice to
the Borrower. The Holder may allocate which of the equity of the Borrower deemed
beneficially owned by the Holder shall be included in the 9.99% amount described
above and which shall be allocated to the excess above 9.99%.


<PAGE>

                                   ARTICLE III

                                EVENT OF DEFAULT

         The occurrence of any of the following events of default ("Event of
Default") shall, at the option of the Holder hereof, make all sums of principal
and interest then remaining unpaid hereon and all other amounts payable
hereunder immediately due and payable, upon demand, without presentment, or
grace period, all of which hereby are expressly waived, except as set forth
below:

         3.1 FAILURE TO PAY PRINCIPAL OR INTEREST. The Borrower fails to pay any
installment of principal, interest or other sum due under this Note when due and
such failure continues for a period of ten (10) days after the due date. The ten
(10) day period described in this Section 3.1 is the same ten (10) day period
described in Section 1.1 hereof.

         3.2 BREACH OF COVENANT. The Borrower breaches any material covenant or
other term or condition of the Subscription Agreement or this Note in any
material respect and such breach, if subject to cure, continues for a period of
ten (10) business days after written notice to the Borrower from the Holder.

         3.3 BREACH OF REPRESENTATIONS AND WARRANTIES. Any material
representation or warranty of the Borrower made herein, in the Subscription
Agreement, or in any agreement, statement or certificate given in writing
pursuant hereto or in connection therewith shall be false or misleading in any
material respect as of the date made and the Closing Date.

         3.4 RECEIVER OR TRUSTEE. The Borrower shall make an assignment for the
benefit of creditors, or apply for or consent to the appointment of a receiver
or trustee for it or for a substantial part of its property or business; or such
a receiver or trustee shall otherwise be appointed.

         3.5 JUDGMENTS. Any money judgment, writ or similar final process shall
be entered or filed against Borrower or any of its property or other assets for
more than $100,000, and shall remain unvacated, unbonded or unstayed for a
period of forty-five (45) days.


<PAGE>

         3.6 BANKRUPTCY. Bankruptcy, insolvency, reorganization or liquidation
proceedings or other proceedings or relief under any bankruptcy law or any law,
or the issuance of any notice in relation to such event, for the relief of
debtors shall be instituted by or against the Borrower and if instituted against
Borrower are not dismissed within 45 days of initiation.

         3.7 DELISTING. Delisting of the Common Stock from the OTC Bulletin
Board ("OTCBB") or such other principal exchange on which the Common Stock is
listed for trading; failure to comply with the requirements for continued
listing on the OTCBB for a period of three consecutive trading days; or
notification from the OTC Bulletin Board or any Principal Market that the
Borrower is not in compliance with the conditions for such continued listing on
the OTCBB or other Principal Market. Should the Common Stock be delisted from
the OTCBB for the sole reason that the OTCBB has been dissolved, then the
Borrower shall not be in default unless it fails to be immediately listed on a
successor entity or the proposed "Bulletin board Exchange."

         3.8 STOP TRADE. An SEC stop trade order or Principal Market trading
suspension that lasts for five or more consecutive trading days.

         3.9 FAILURE TO DELIVER COMMON STOCK OR REPLACEMENT NOTE. Borrower's
failure to timely deliver Common Stock to the Holder pursuant to and in the form
required by this Note and Section 9 of the Subscription Agreement, or, if
required, a replacement Note.

         3.10 NON-REGISTRATION EVENT. The occurrence of a Non-Registration Event
as described in Section 10.4 of the Subscription Agreement.

         3.11 REVERSE SPLITS. The Borrower effectuates a reverse split of its
common stock without the prior written consent of the Holder.

         3.12 CROSS DEFAULT. A default by the Borrower of a material term,
covenant, warranty or undertaking of any other agreement to which the Borrower
and Holder are parties, or the occurrence of a material event of default under
any such other agreement, in each case, which is not cured after any required
notice and/or cure period.

                                   ARTICLE IV

                                  MISCELLANEOUS

         4.1 FAILURE OR INDULGENCE NOT WAIVER. No failure or delay on the part
of Holder hereof in the exercise of any power, right or privilege hereunder
shall operate as a waiver thereof, nor shall any single or partial exercise of
any such power, right or privilege preclude other or further exercise thereof or
of any other right, power or privilege. All rights and remedies existing
hereunder are cumulative to, and not exclusive of, any rights or remedies
otherwise available.


<PAGE>

         4.2 NOTICES. All notices, demands, requests, consents, approvals, and
other communications required or permitted hereunder shall be in writing and,
unless otherwise specified herein, shall be (i) personally served, (ii)
deposited in the mail, registered or certified, return receipt requested,
postage prepaid, (iii) delivered by reputable air courier service with charges
prepaid, or (iv) transmitted by hand delivery, telegram, or facsimile, addressed
as set forth below or to such other address as such party shall have specified
most recently by written notice. Any notice or other communication required or
permitted to be given hereunder shall be deemed effective (a) upon hand delivery
or delivery by facsimile, with accurate confirmation generated by the
transmitting facsimile machine, at the address or number designated below (if
delivered on a business day during normal business hours where such notice is to
be received), or the first business day following such delivery (if delivered
other than on a business day during normal business hours where such notice is
to be received) or (b) on the second business day following the date of mailing
by express courier service, fully prepaid, addressed to such address, or upon
actual receipt of such mailing, whichever shall first occur. The addresses for
such communications shall be: (i) if to the Borrower to: One Voice Technologies
Inc., 6333 Greenwich Drive, Suite 240, San Diego, CA 92122, telecopier number:
(858) 552-4474, with a copy by telecopier only to: Sichenzia, Ross, Friedman &
Ference LLP, 1065 Avenue of the Americas, New York, NY 10018, Attn: Gregory
Sichenzia, Esq., telecopier number: (212) 930-9725, and (ii) if to the Holder,
to the name, address and telecopy number set forth on the front page of this
Note, with a copy by telecopier only to Grushko & Mittman, P.C., 551 Fifth
Avenue, Suite 1601, New York, New York 10176, telecopier number: (212) 697-3575.

         4.3 AMENDMENT PROVISION. The term "Note" and all reference thereto, as
used throughout this instrument, shall mean this instrument as originally
executed, or if later amended or supplemented, then as so amended or
supplemented.

         4.4 ASSIGNABILITY. This Note shall be binding upon the Borrower and its
successors and assigns, and shall inure to the benefit of the Holder and its
successors and assigns.

         4.5 COST OF COLLECTION. If default is made in the payment of this Note,
Borrower shall pay the Holder hereof reasonable costs of collection, including
reasonable attorneys' fees.

         4.6 GOVERNING LAW. This Note shall be governed by and construed in
accordance with the laws of the State of New York. Any action brought by either
party against the other concerning the transactions contemplated by this
Agreement shall be brought only in the state courts of New York or in the
federal courts located in the state of New York. Both parties and the individual
signing this Agreement on behalf of the Borrower agree to submit to the
jurisdiction of such courts. The prevailing party shall be entitled to recover
from the other party its reasonable attorney's fees and costs.


<PAGE>

         4.7 MAXIMUM PAYMENTS. Nothing contained herein shall be deemed to
establish or require the payment of a rate of interest or other charges in
excess of the maximum permitted by applicable law. In the event that the rate of
interest required to be paid or other charges hereunder exceed the maximum
permitted by such law, any payments in excess of such maximum shall be credited
against amounts owed by the Borrower to the Holder and thus refunded to the
Borrower.

         4.8 REDEMPTION. This Note may not be redeemed or paid before or after
the Maturity Date without the consent of the Holder.

         4.9 SHAREHOLDER STATUS. The Holder shall not have rights as a
shareholder of the Borrower with respect to unconverted portions of this Note.
However, the Holder will have the right of a shareholder of the Borrower with
respect to the Shares of Common Stock to be received after delivery by the
Holder of a Conversion Notice to the Borrower.



<PAGE>


         IN WITNESS WHEREOF, Borrower has caused this Note to be signed in its
name by an authorized officer on this ____ day of November, 2002.

                                             ONE VOICE TECHNOLOGIES INC.



                                             By:
                                                 -------------------------------
                                                 Name:
                                                 Title:

WITNESS:



---------------------------------------


<PAGE>


                              NOTICE OF CONVERSION
                              --------------------

(To be executed by the Registered Holder in order to convert the Note)


         The undersigned hereby elects to convert $_________ of the principal
and $_________ of the interest due on the Note issued by ONE VOICE TECHNOLOGIES
INC. on November ___, 2002 into Shares of Common Stock of ONE VOICE TECHNOLOGIES
INC. (the "Borrower") according to the conditions set forth in such Note, as of
the date written below.



Date of Conversion:_____________________________________________________________


Conversion Price:_______________________________________________________________


Shares To Be Delivered:_________________________________________________________


Signature:______________________________________________________________________


Print Name:_____________________________________________________________________


Address:________________________________________________________________________

            ____________________________________________________________________