HDTenEightyP/NetNews huggingface dataset:
From: weitzman@chaos.cs.brandeis.edu (Adam J. Weitzman)
Newsgroups: rec.audio
Subject: WHY a 60-minute MD?
Date: 28 Dec 92 13:59:55 GMT
Organization: Brandeis University


So I'm getting all psyched for this MD thing, seeing as it's just like a
recordable CD with slightly lesser sound quality, and I'm getting ready to
put all my taped music on MD and whatnot. So I'm looking around for blank MDs
which are supposed to be roughly 74 minutes in length. However, all the 
blank MDs that are being sold are only 60 minutes long. This is not good if
I want to tape some my long CDs for the car or whatever. I was already 
unhappy that I couldn't get some of my >74-minute CDs onto one MD, but now
I find out that the recording limit on a blank MD is only 60 minutes? What
-- 
					- Adam J Weitzman
					  weitzman@chaos.cs.brandeis.edu
"All our life is spent in this permanent brainwashed contempt."
	- Meat Beat Manifesto
From: andrey@cco.caltech.edu (Andre T. Yew)
Newsgroups: rec.audio
Subject: Re: CD Sound (again?)
Date: 28 Dec 1992 06:23:10 GMT
Organization: California Institute of Technology, Pasadena
NNTP-Posting-Host: punisher.caltech.edu

kong@leland.Stanford.EDU (Kong Kritayakirana) writes:

>From: andrey@cco.caltech.edu (Andre T. Yew)
> 
>>        A much better explanation of this is found in the
>>book by Oppenheimer, somebody, and Young, called, I think,
>>_Signals and Systems_.  It's a red book.
> 
>Oppenheimer and Schaefer (forgive my spelling) "Discrete Time Signal 
>Processing"

	At last, I've found the reference.  It's _Signals and Systems_
by Oppenheim, Wilsky, and Young.  It's a pretty good book that's
easy to follow, if you're prepared to do some amount of scratchwork
(some of the most relevent things are in the exercises).  There
are some other fun party games you learn in the book -- impress
all your friends by deriving the closed-form formula for the Fibonacci
numbers, for example :) :) :).

	Your other points are well-taken though -- thanks!

--Andre

-- 
             Andre Yew andrey@cco.caltech.edu (131.215.139.2)
Newsgroups: rec.audio
From: joe@avs.com (Joe Peterson)
Subject: Re: analog pride
Organization: Advanced Visual Systems Inc.
X-Newsreader: TIN [version 1.1 PL8]
Date: Tue, 22 Dec 1992 04:29:25 GMT

Norman P. Tracy (znpt01@trc.amoco.com) wrote:

: In article <MANI.92Dec20193246@aix.Berkeley.EDU>, mani@aix.Berkeley.EDU (Mani Varadarajan) writes:
: >    >Norman P. Tracy (znpt01@trc.amoco.com) wrote:

: !!!!!!!!!!  OH NO HE DID NOT  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!
: > 
: >    >This makes me think of TV shows that are filmed (using movie film) rather
: >    >than video (like Cheers as opposed to most sitcoms).  Film gives a more
: >    >unrealistic, softer look.  The crispness of video makes shows look "cheap".
: >    >Maybe this is just because we are conditioned by movies...
: > 
: > I don't think that film gives a more unrealistic look; in fact,
: > i believe that film reproduces colors much more realistically
: > than videotape does.  Bright colors tend to dominate too much
: > in videotape, and lighting conditions affect it a lot more than
: > film.  
: > 
: > Film is just far better to look at.
: > 
: > Mani
: > 

: For the record guys. The above quote must of come from someone elses followup
: to my followup. I did not use a film/video anology.  I do however agree with
: Mani.

That was my quote...  Well, don't get my wrong.   I agree that film is
better, I'm just saying that if softens the image and looks less crisp.
It does, however, bring out more visual clues somehow.
				Joe

Newsgroups: rec.audio
From: kong@leland.Stanford.EDU (Kong Kritayakirana)
Subject: CD Sound Quality?
Organization: DSG, Stanford University, CA 94305, USA
Date: Sat, 2 Jan 93 16:44:06 GMT

From: matthews@eecs.ucdavis.edu (Thomas W. Matthews)
 
>In my application (not audio), I care only about the value of the input
>waveform at the sample times.  I will not be attempting to reconstruct the
>waveform BETWEEN the sample times.  Hence, the input signal need not be
>bandlimited to half the sampling frequency.  
 
You CAN do that. But what you get when you look at the freq. domain you'll see 
all aliases and you can't tell them apart from the freq. below fs/2. I suspect
the sampling rate you are using is much higher than 2 times the highest freq 
contained in the signal.
 
>However, it is the goal of audio devices to reconstruct the input waveform
>from the samples, including the part of the waveform between the samples.
 
Correct. You can recover the waveform between samples almost perfectly if you 
filter out enough HF garbage.
 
>I have heard it said that digital leaves out part of the sound
>(the part between the sample times). 
 
That's argument that analog "golden ears" make without knowing enough about 
sampling theory. They think the sampling process throws some data between 
samples away in the 20-20kHz bandwidth.
 
>these can be mitigated by
>increasing the sampling frequency (to decrease required filter complexity) or
>by doing more of ther filtering in the digital domain (certain types of
>filter responses are possible there). 
 
You cannot solve the problem of aliasing with digital filter. Once you've gone 
from analog to digital, the aliases are already there and you cannot tell 
which is which if you use too low a sampling rate.
----------------------------------------------
Kong Kritayakirana  (kong@leland.stanford.edu)
Remotely reading and posting to rec.audio from
a nice beach somewhere in south pacific.  Damn
the technology that helps  us to get in touch.
----------------------------------------------

Newsgroups: rec.audio
From: phr@telebit.com (Paul Rubin)
Subject: Re: MiniDisc is here!
Organization: Telebit Corporation; Sunnyvale, CA, USA
	<Bzu539.DDt@news.cso.uiuc.edu>
Date: 25 Dec 92 15:50:46

In article <Bzu539.DDt@news.cso.uiuc.edu> rmg53668@dcl-nxt53 (Ryan Martin Grant) writes:


   MD still suffers from the same problems CD-ROMs do with regard to
   variable spin rates and inertia killing random seek times.  I still
   look forward to a small portable disc capable of handling well over
   100MB, but I do not expect it to replace my 250MB HD.

MD has 1/4th the transfer speed of CD (hence the 4:1 compression).
This bit rate is comparable to a floppy.  It is nothing like a
hard disk.

I'd love to see MD's replace floppies.  The one scary thing
is the idea of taking 70 minutes (or even 35 minutes) to 
read or write one.
Newsgroups: rec.audio
From: dbarker@spang.Camosun.BC.CA (Deryk Barker)
Subject: Re: CD SOund QUality
Organization: Camosun College, Victoria B.C, Canada
X-Newsreader: Tin 1.1 PL4
Date: Tue, 22 Dec 1992 22:03:06 GMT

kong@leland.Stanford.EDU (Kong Kritayakirana) writes:
: MJF9968@rigel.tamu.edu wrote:
: > Further proof of how one-track-minded people have become
: > for the storage and reproduction of music.
: >
: > In other words, yet another "critical listener" who auditioned
: > a $200 CD player versus a $200 phono set-up and decided
: > that digital is inherently better than analog.  *sigh*
: >
: > Living better through chemistry,
: > Mike "Pi" Freeman
: > MJF9968@rigel.tamu.edu
: >
: > PS--  I've been wondering: would it be possible to have
: > an optical, analog format?  Aren't LDs effectively
: > that?  Wouldn't such a system give us the best of
: > both worlds: durability, convenience, *and* sound
: > quality?
: 
: You make it hard to answer your mail. You DID NOT make any argument. Who told
: you that I was using $200 CD player? Who told you that I was using $200 phono?
: You obviously did not know ANYTHING about my system. What made you make such
: a statement? Your mail is just a shot by an incompetent person dissatisfied
: with the point I have made. If you see the issue otherwise and have airtight
: arguments, use it. Otherwise don't write this kind of shit.
: 
: I am doing a PhD in EE specializing in adaptive digital filtering and I am a
: musician and hifi fanatic.

Now *there's* a rare combination.............

--
Real:  Deryk Barker, Computer Science Dept., Camosun College, Victoria B.C.
Email: (dbarker@spang.camosun.bc.ca)
Phone: +1 604 370 4452
Xref: sparky rec.audio:17606 rec.video:15268
From: chris@adx.adelphi.edu (Chris Chen)
Subject: advice/info about Pioneer speaker system CSG403
Organization: Adelphi University
Date: Thu, 31 Dec 1992 04:52:10 GMT

Hi there:

	I would like to hear some advice or info about the Pioneer
speaker system CSG403. The Consumer Report recommands it as the front
speaker. I am looking for pront speakers for my Sony STRD990 receiver.
Someone told me to use Bose 301 S3, others say NHT 1, still others say
JBL III Plus. Any advice would be appreciated. Thanks in advance. I'll
summarize.


--Chris
From: grego@bit.UUCP (Greg Sanguinetti)
Newsgroups: rec.audio
Subject: Re: CD SOund QUality
Date: 22 Dec 92 17:20:03 GMT
Article-I.D.: bit.539
Reply-To: grego@bit.UUCP (Grego Sanguinetti)
Organization: BIT  Portland, OR

In article <1h17e4INNrkv@usenet.INS.CWRU.Edu> co940@cleveland.Freenet.Edu (Nicholas E. Damato) writes:
>
>>people can't hear the difference between 15 and 16 bit.
> 
>But they CAN hear the difference between 14 and 16 bits...
>and I'll bet they can hear the difference between 16 and 18 or 20
>bits.
> 
Not scientific but interesting annectdote:

When I auditioned CD players for my system I (single) blind AB tested two
Sony ES systems. One was a 16 bit 4x system and the other was a dual 18 bit
8x system. Two copies of same CD switched into same amp/speakers. Independent
person working switch.

Although I was not able to articulate the exact differences I heard. In all
cases I picked the same player as having a more pleasing sound. I was easy
for me (not golden eared in my opinion) to hear the difference. I picked
the 18 bit system. It also had some extra features I liked. The sound
difference alone may not have swayed me to pay the extra few hundred US$
required.

-grego
-- 
---------------------------------------------------------------------------
Grego Sanguinetti, Bipolar Integrated Technology | Water, water everywhere,
grego@bit.uucp or grego%bit%ogi.cse.edu          | but I'd rather drink
or bit!grego@ogi.cse.edu or ...!ogicse!bit!grego | beer.
Newsgroups: rec.audio
From: mcobb@scott.skidmore.edu (mary cobb)
Subject: Please suggest Audio magazines!
Organization: Skidmore College, Saratoga Springs NY
Date: Sat, 26 Dec 1992 14:28:02 GMT

I'd like to subscribe to some good Audio magazines, but don't know what they
are.  I have found this to be a problem in attaining a subscription for them.
One person mentioned _Stereophile_ a while back, that sounds cool, if there
are any others please mail me with a phone number (or internet address? => ) 
that I can reach the company at to get a subscription.  Thanks!
 
Eric
From: todd@crayola (Todd Katz)
Newsgroups: rec.audio
Subject: Re: MiniDisc is here!
Date: 24 Dec 92 00:08:09 GMT
Organization: Informix Software, Inc.

I agree with the gentleman pointing out the computer potential for  
minidisks. These suckers are an ideal replacement for both floppies and HD  
in portables and laptops. On desktop-type systems they eliminated the need  
to have tape backup systems and greatly reduce (to one) the number of  
disks needed with new releases of software. 

And I think that's just the beginning of the possibilities.


-- tk
Newsgroups: rec.audio
From: bill@bilver.uucp (Bill Vermillion)
Subject: Re: mfsl uhqr dsotm
Organization: W. J. Vermillion - Winter Park, FL
Distribution: rec
Date: Tue, 22 Dec 1992 14:07:58 GMT

In article <1992Dec21.1501.14732@channel1> "herb chong" <herb.chong@channel1.com> writes:

> FWIW, i have a 
>sealed copy of the Sheffield Labs LAB-2, Thelma Houston's I've Got the 
>Music in Me that isn't worth more than i paid for it. i have another copy 
>i play instead, and the CD too. the record is definitely better than the 
>CD, but i don't think they paid much attention to quality of the tape 
>copy.

The Direct Disk compared to the CD show exactly why the high-end
community was using direct-to-disk for their audio.    The problems you
hear on the CD are all the problems I have always associated with
analogue tape.   Hiss nothwithstanding, the 2 biggest problems with
tape are the lack of transient response and the lack of low end
frequency response.     Direct-to-disk is still one of the finest
recording methods known.    (Note that I did say RECORDING method in
the previous sentence - replication and distribution take their toll in
that arena).

It would probably be interesting and revealing if someone did a DD, CD
and then a CD and an LP from a state of the art tape as we know it today
- eg 30 ips, 2-track, 1/2" with Dolby SR from the same session
and then did a serious comparison of the results.
-- 
Bill Vermillion - bill@bilver.oau.org  bill@bilver.uucp
                - ..!{peora|tous|tarpit}!bilver!bill
Newsgroups: rec.audio
From: sray@max.physics.sunysb.edu (Subhankar Ray)
Subject: Harmon-Kardon receiver
Organization: Institute for the Theoretical Physics
Date: Thu, 31 Dec 1992 20:41:08 GMT


I was wondering if anybody in the net has an experience 
with Harmon-Kardon A/V receivers.

I am talking about  AVR-30 in particular. 

Did anyone use/has listened to the ribbon (tweeter/midrange)
and conventional woofer hybrids ? Celestion 5000 and 7000
are just that ....    one ribbon (350cu-in and 720cu-in respectively)
and woofer (one 8in and two 8in resp). They sound good to me...

Any opinion ?

		-Ray
From: lstowell@pyrnova.mis.pyramid.com (Lon Stowell)
Newsgroups: rec.audio
Subject: Re: Room treatments
Date: 29 Dec 92 19:31:25 GMT
Reply-To: lstowell@pyrnova.pyramid.com.pyramid.com (Lon Stowell)
Organization: Pyramid Technology Corporation

In article <19921229.062755.578@almaden.ibm.com> barron@rhqvm14.VNET.IBM.COM writes:
>Does anyone have any suggestions for frequency specific as well as
>general room treatments?
>
>I measured the response of my room yesterday to find a 10db+ peak
>at 54hz (corresponds to my roughly 22 ft long room) plus the harmonics
>plus resonance at the room height and room width, but not as much a peak
>as due to the length.
>
>This is what is giving my room the heavy/colored bass I have been hearing.
>
>I know of room tunes, but I am sure there is a much less expensive way to
>replicate this technology, plus I want to specifically tune out the
>resonances for this particular room.
>
    Move the speakers out into the room a few feet.  This is easiest
    with a satellite/subwoofer arrangement, but works with just
    about any speaker.
Newsgroups: rec.audio
From: tlai@cs.toronto.edu (Tony Wen Hsun Lai)
Subject: Re: MiniDisc is here!
Organization: Department of Computer Science, University of Toronto
Date: 29 Dec 92 22:00:55 GMT

In article <1992Dec29.002911.29017@intacc.uucp> zerobeat@intacc.uucp (Ferenc Szabo) writes:
>Hmmmm.......  It's hard to believe that the audio on MDs would be kept in
>a truly random access location.  Wouldn't it be like a CD, where you *can*
>randomly access any tune you like, but would have to wait out whatever
>the access time is for the player?  (70ms or so????).  
>
>However, I can imagine a clever use of the 3 second buffer being used to
>truly have random access recording & playback with NO access time delay.
>
>ANybody know anything about this???????????

Um, I remember reading somewhere that an MD player does use its 10 second
buffer so that audio is continuous during playback.  There were some
articles on MD in recent issues of _Audio_ and _Stereophile_, but I don't
have them with me.
From: greg@zaphod.uchicago.edu (Greg Kuperberg)
Newsgroups: rec.audio
Subject: Why would tapes squeak?
Date: 2 Jan 93 01:06:36 GMT
Organization: Dept. of Mathematics, U. of Chicago

My wife has an long-standing collection of cassette tapes and over
time many of them have begun to squeak.  Typically the tape starts
in good shape and at some point faint metallic mosquito noises appear
and then go away.  Then they get more persistent and louder.  I can
tell you that you don't need much of this to ruin a good musical
piece.

Why do the tapes do this?  Have they been played too often?  Is the
tape deck ruining them?  Is there any way to salvage the tapes or
should they go to the trash?  Please send a copy of your reply by mail.
Thanks.
From: owen@emds.enet.dec.com (Steve Owen)
Newsgroups: rec.audio
Subject: Re: polarity inversion
Date: 29 Dec 92 21:05:14 GMT
Organization: Digital Equipment Corp.
Organisation: Digital Equipment Corporation, Maynard MA


In article <92364.114116U37426@uicvm.uic.edu>, U37426@uicvm.uic.edu writes...
> 
>   Just how does polarity inversion affect the sound of a stereo?  I have
>never had a system that had this feature.  I have no idea what it does.
>Could somebody explain?  thanks!

I assume you're refering to the 'mini-review' of the Adcom GCD-600 CD player I 
recently posted... right?

Lets say you fed an audio signal into your speakers... a sine wave for 
simplicity.

In a 'non polarity inverted' system, let's say that the sine wave started with 
a positive pulse, then went negative, back to positive, and so on.  The 
speakers would start by moving out, then sucking back in, then moving out 
again.

In a "Polarity inverted" system, that first pulse would send the speakers 
sucking inward, then out, then back in again.

The reason for a "polarity inversion switch" is because some recordings are 
recorded with reverse polarity and some people (myself included) would like 
them to be normal again.

I believe that if you invert one channel but not the other, you get what's 
called "out of phase" sound.

Later...
Steve

**************************************************************************///**
Steve Owen                                                               /// 
owen@emds.enet.dec.com                                               \\\/// 
                                                                      \XX/
*******************************************************************************
Newsgroups: rec.audio
From: deraadt@newt.cuc.ab.ca (Theo de Raadt)
Subject: Re: MiniDisc is here!
Organization: little lizard city
	<DERAADT.92Dec27232721@newt.newt.cuc.ab.ca> <29089@oasys.dt.navy.mil>
Date: Thu, 31 Dec 1992 00:02:00 GMT

In article <29089@oasys.dt.navy.mil> curt@oasys.dt.navy.mil (Curt Welch) writes:
   In rec.audio, deraadt@newt.cuc.ab.ca (Theo de Raadt) writes:
   >What is the actual geometry and spacing of the disk? Is it 72M or 200M
   >in size or what?

   What do you mean?  What does 72M or 200M mean?  The articles I have don't

I mean, if you stored uncompressed digital information on an MD, how many
megabytes would it hold?

I'm not just thinking about audio usage. If this device is large enough
and fast enough, then I think it just might be the replacement for the
3.5" floppy.
 <tdr.
--

This space not left unintentionally unblank.		deraadt@newt.cuc.ab.ca
Newsgroups: rec.audio
From: frankc@tgf.tc.faa.gov (Frank Coffman)
Newsgroups: rec.audio
Subject: Re: Room treatments
Date: 29 Dec 1992 15:09:51 GMT
Organization: FAA Technical Center, Pomona, NJ	
Distribution: world
NNTP-Posting-Host: offserv2.faa.gov

BARRON@RHQVM14.VNET.IBM.COM writes:

>Does anyone have any suggestions for frequency specific as well as
>general room treatments?

>I measured the response of my room yesterday to find a 10db+ peak
>at 54hz (corresponds to my roughly 22 ft long room) plus the harmonics
>plus resonance at the room height and room width, but not as much a peak
>as due to the length.

>This is what is giving my room the heavy/colored bass I have been hearing.

>I know of room tunes, but I am sure there is a much less expensive way to
>replicate this technology, plus I want to specifically tune out the
>resonances for this particular room.

How about a parametric equalizer?


--
*********************************************************************
* Frank Coffman     TGF (Target Generation Facility)                *  
*                   FAA Technical Center, ACN-400c                  *
*                   Atlantic City Int'l Airport, NJ 08405           *
Newsgroups: rec.audio
From: dave@pipi.iis.u-tokyo.ac.jp (David Wuertele)
Subject: Re: The real use of MD and DCC
Organization: Institute of Industrial Science, University of tokyo.
Date: Wed, 30 Dec 1992 14:33:00 GMT

In article <ISBELL.92Dec22090226@pop-tarts.ai.mit.edu> isbell@ai.mit.edu (Charles L Isbell) writes:
> - I live in Boston while I'm in school (I hate Boston so much, I could
> cry).  Which handles bumps better?  Is there a difference?

I don't know about the other media, but the MD is incredibly shock
resistant.  I went down to Akihabara and listened to the one that records
(I forgot the model number) with nice Stax headphones, and I POUNDED it.
I dropped the player on the table, I knocked it with my fist.  I rocked it
slow and fast, I shook it like you see bartenders do.  I flicked it with
my finger, I held it and jumped up and down.  I knocked on the table with
my fist, I pressed the player against my chin and hummed a tune.  I looked
at the damn thing cross-eyed.  I could hear NO EFFECT on the music from
any of this torture!!!

I was so violent, I think that if I had carried out these tests in the
States, I would have been forced to buy the display.  I would like to buy
one of these things just for the shock value when I show my friends how
impervious to intimidation it is.

Dave
Newsgroups: rec.audio
From: kunstler@dpw.com (Jeff Kunstler)
Subject: Deesign Acoustics PS10a For Sale
Internet:  kunstler@dpw.com
Date: Mon, 21 Dec 1992 22:14:06 +0000


  I have a pair of Design Acoustics PS10a for sale.  The speakers are in
  mint condition and are about 4 months old.  I have the original     
  instructions and warranty card.

  $200.00/pair + 1/2 shipping.

  Please e-mail me all offers.

				
					Jeff Kunstler
					kunstler@dpw.com
From: mike@banana.fedex.com (Mike Bearden)
Newsgroups: rec.audio
Subject: Fabric for Tube Traps
Date: 23 Dec 92 19:41:50 GMT
Distribution: rec
Organization: Federal Express Corp.












i saw a recent post from barry grant, who was looking for a fabric to 
cover his home made tube traps.  i sent a reply but it bounced.

i used burlap to cover the tube traps that i made.  i also covered my
fiberglass wall panels with burlap.  (i have seen similar items
marketed as panels by AVL.  we glued the fabric on using silicone caulk
in both cases.  

barry, let me know how your project came out, and if you came
up with a better fabric.

mike bearden
Newsgroups: rec.audio
From: powell@wraith.netops.gtefsd.com (Mike Powell "GTE FSD Net Mgr")
Subject: Looking for a Portable CD player for occasional use in car
Keywords: Sony, Magnavox
Organization: GTE Federal Systems Division (Telecom)
Distribution: na
Date: Wed, 23 Dec 1992 03:12:38 GMT

Howdy,
I am in the market for a portable CD player. One that will work anywhere
including my car.

I have a Nakamichi RD-460 in my car (which supports CD line inputs),
no CD player at home (yet), and a CD-ROM at (my current) work that works
nicely with my audio CDs.


Since I am not willing to replace my car unit, and I would like to have
a CD player that I can take anywhere, the portable ones seem like the

I have seen the Sony 180K, 802K, 808K, and the Magnavox CDB502.
The Sony 802K looks the best so far.

My basic question is what is the best unit for the job?

Other factors:
	Is there any big difference in the car "rated" units?
		vibration dampening?
		hookups for a car without a CD player?
		lighting?
	Do all portable CD players have:
		a line out?
		12VDC in?
I have only been at this a short time and I am lost.
Has any magazine or other source done a write up lately?
I have checked Consumer Reports, nothing.

Any info would be appreciated.
Thanks,
Mike
--
Mike Powell PPASEL
"It's hard to find router bits for your cisco"
Disclaimer: I speak for myself. No direct relation to the DUAT folks.
internet: powell@wraith.netops.gtefsd.com  Usenet: uunet!wraith.netops.gtefsd.com!powell
From: garyr@hpspdla.spd.HP.COM (Gary Rosen)
Date: Thu, 24 Dec 1992 18:10:57 GMT
Subject: Re: Re: JJ, be nice! (was re: CD SOund QUality, 16 bits, etc)
Organization: HP Stanford Park - Palo Alto, CA