HDTenEightyP/NetNews huggingface dataset:
Newsgroups: rec.audio
Subject: PCM encoders
From: glassey@elec.canterbury.ac.nz (Robert Glassey)
Date: Thu, 1 Oct 1992 03:47:39 GMT
Organization: University of Canterbury, Christchurch, New Zealand
Originator: glassey@betelgeux

Hi Netlanders,

I'm interested in PCM encoders for recording digital sound on
video recorders. I've got an old Beta (PAL) video recorder
lying around that I picked up real cheap, and being an
electrical engineering student (Master of Engineering), I'm
interested in making up (or modifying) something to use it for
either digital audio, or computer backup.

PCM encoders don't seem to have ever got anywhere here in New
Zealand, in fact I've never seen or even heard of one here.
Did they even make them for PAL systems?

I would be interested in anything anyone knows about these
things, as I know stuff all about 'em!

I gather they used 14 bits, and 44.1kHz sample rate. What
error correction techniques did they use? (they did have error
correction, didn't they?)

What are the error characteristics of a video tape? From
watching recorded video, it seems that there is some random
noise and there can also be a lot of burst errors, about 2-5
lines long (with dirty heads). Do whole frames sometimes get
lost, for example when tracking goes out?

Is only the luminance used? Does it require a special B&W
recorder with a wide bandwidth? What is the bandwidth used?
How is the signal modulated? Is it just PCM, or perhaps a
multilevel code, or do they use a carrier, with say BPSK or
QPSK?

Is the tape speed controlled, or do you get lots of 'wow'?

What chip sets are about to do the error correction,
interleaving & interpolation?

Anyone out there got one or used one? What is your impression
of them? What are their limits? I guess most of them used what
would now be considered old technology, 14 bits, no
oversampleing or dither. Are they still in use today or has
DAT made them obsolete. I would imagine they would be very
similar to DAT, can the same chip sets be used? Or do DATs do
things differently? If so, how, and why?

Thanx for anything you might have, articles, specs, circuits,
reviews or whatever.

Rob Glassey.

INTERNET: Glassey@elec.canterbury.ac.nz
From: jhosee@zeus.calpoly.edu (Jeffrey Yang Ho-See)
Newsgroups: rec.audio
Subject: Re: Sound City -- Mail Order
Summary: ARGH!
Date: 29 Sep 92 19:30:59 GMT
Distribution: usa
Organization: California Polytechnic State University, San Luis Obispo

In article <collin.717730363@angelo> collin@angelo.amd.com (Collin K. Ong) writes:
>My housemate bought the Rockford Fosgate RF2000 home power amp plus the
>RF200 preamp from them for their package deal of $799.  The preamp was new but
>the power amp looked like a demo, ie there were small nicks all over it.
>There was a problem ..........
>It took them (or UPS) a while to pick the thing up but the
>situation seems to have worked out ok with the only cost being the trouble
>of packing the thing up.

ARGH! After hearing so many wonderful stories about Sound City
I decided to order from the today. *sigh* Now I hear read a post
concerning some problems with their merchandise. I guess
I will have to wait and see in 5-7 days... :p

- Jeffrey
Newsgroups: rec.audio
From: ar12@quads.uchicago.edu (Richard Nixon)
Subject: Mail-order price on Denon 100 or 150?
Reply-To: ar12@midway.uchicago.edu
Organization: University of Chicago Computing Organizations
Date: Tue, 29 Sep 1992 15:47:28 GMT

Hi ho,
Just wondering if anyone out there knows what a reasonable mail order price
for the Denon 100 & 150 portable CD players may be and where from.
Thanks much
Andre

Newsgroups: rec.audio
From: davidric@uxa.cso.uiuc.edu (david ricardo)
Subject: DCC and the built in cassette recorder
Organization: University of Illinois at Urbana
Date: Thu, 1 Oct 1992 21:37:44 GMT

I am currently looking for a good cassette recorder (3head/HXpro etc.)
but soon to be released DCC decks have me thinking I should wait
6 months to a year. 

I make lots of cassette tapes for my friends to trade and so forth
so I am interested in the cassette deck built into the DCC decks.

Are they cheap units, or are the do the first DCC decks have HX pro
3 head, Dolby B/C in the cassette recorder portion?

Obviously I would use DCC for my own listening and as my friends 
get their own DCC decks, but the cassette still has a good 5-10 years
ahead of it at the very least. It's a nice safety valve as someone
else mentioned and may be one the the key features which makes DCC
successful.

Anybody know anything?


-- 

| Ricardo David              RacerX Engineering              |
| University of Illinois          ...keep them mowing        |
| davidric@uxa.cso.uiuc.edu                 blades sharp ... |
Newsgroups: rec.audio
From: tlai@cs.toronto.edu (Tony Wen Hsun Lai)
Subject: Re: Rewriting a Sony MD
Organization: Department of Computer Science, University of Toronto
Date: 29 Sep 92 16:46:00 GMT

In article <MARC.92Sep29130424@mamba.es.ele.tue.nl> marc@es.ele.tue.nl (Marc Heijligers) writes:
>I also wonder how they buffer when you are recording. Guess it isn't shock
>resistant then. I also wonder whether recording is contact free. One needs
>magnetic fields and laser, and the magnetic fields should be very small. 

The Sony MD uses direct overwrite magneto-optical media, so if it can
buffer when reading, it should be able to buffer when writing.  Also, all
MO media is supposed to be contact-free, no?
From: reeve@steam.Xylogics.COM (Scott Reeve)
Newsgroups: rec.audio
Subject: Correction on Fried speaker post
Date: 29 Sep 92 14:10:09 GMT
Reply-To: reeve@steam.Xylogics.COM (Scott Reeve)
Organization: Xylogics, Inc. Burlington, MA, USA 01810


Please  E-mail any responses to reeve@xylogics.com 
Thanks.

Original Post:
------------------------------------------------------------------
I'm about to purchase a pair of Fried R/4's.
The list price is $1200 and the price offered by
a retailer here in Boston is $1000. (He's also
giving me $100 for an old pair of AR 48s's, which
is nice.)  I need to know few things.

1) How is this price?  has anyone seen the R/4's for less?

2) If anyone knows anything about AR speakers, how is
   $100 for the trade-in? (they're 10 years old, so I pretty
		          much know the answer on that one :-)

3) Is Fried a fairly reputable company?

4) Does anyone here in the Northeast know of any retailers
   selling Fried?

Any information would be appreciated.  Thanks in advance.

- Scott

-------------------------------------------------------------------
Newsgroups: rec.audio
From: phr@telebit.com (Paul Rubin)
Subject: Re: DAT Royalty - Only on blank tape?
Organization: Telebit Corporation; Sunnyvale, CA, USA
Date: 29 Sep 92 21:30:35

What about DAT data tapes?
Will there be a tax on those?
Will it be *higher* than the tax on audio tapes,
because they'll claim you're using them to pirate software?
From: derrick@cs.athabascau.ca (Derrick Rowlandson)
Newsgroups: rec.audio
Subject: Mission speakers
Date: 5 Oct 92 19:24:52 GMT
Article-I.D.: aupair.2411
Distribution: rec
Organization: Athabasca University


Hi. I am looking at the purchase of a new set of speakers for my NAD system.
I saw a lovely pair of British made MISSION speakers, that looked very
nice. Before I go in and audition these with my tin ear, I was hoping to
solicit some opinions on these speakers. The model is #753. These have
a small attractive packaging, which I like. They utilize 4-5 bass-mid
drivers with one tweeter. I listen to instrumental music; Jazz, Rock,
Blues type of stuff.

Any comments on these would be appreciatted, or even suggestions on other
small-size great-sounding speakers would be most welcome.

Please email, as I don't frequent this group.

Thanks in advance


Derrick
Newsgroups: rec.audio
From: rsd@sei.cmu.edu (Richard S D'Ippolito)
Subject: Re: Re: Choosing Cables (Was  Re: Very expensive cables)
Organization: The Software Engineering Institute
Date: Wed, 30 Sep 1992 21:09:40 GMT


Although Mr. Strain is no longer reading boring responses, it won't prevent me
from boring the rest of you...


In article <1190769@hpnmdla.sr.hp.com>, Kurt Strain writes :

|> You are now added to my kill file, Dick. Sorry I assumed you were some
|> real PhD, I must have mistaken you for someone important.   Now as far
|> as I'm concerned, your ass is history.  So piss off, boy.

What Mr. Strain failed to note was that I said I have a PhD in Engineering
Design, not EE, but I have a BSEE which I have been using for 27 years.
Neither makes me "important", but both gave me the opportunity to be exposed
to the limits of my knowledge, as all education does.

These discussions seem to revolve around models and their usefulness.  I will
be the last person to say that we know everything, but that shouldn't prevent
me (or others) from requesting scientifically verifiable evidence to accompany
claims that simple models of conduction in copper are inadequate for short
(<50 foot) lengths at audio (<20KHz) frequencies.  It is simply a reflection
of my training, not to say intense interest, for me to make such requests.

Over the years, I have heard the same claims about shape, twisting, plating,
crystal structure, grain boundary rectification, oxides, microstructures,
dielectrics, etc., but no new testable theories with evidence (except
anecdotal) to support them have ever been produced.  If you wish us to explore
these claims and capture the improvements, how are we to do it?

My question to those who attempt to present such information to a forum of
scientists and engineers is, why are you so disturbed when we react the way
you know in advance we will?  What makes your claims special and why should we
act unnaturally to them?  Who will supply the evaluation methods?

I wonder how many of you making claims here were applauding when the
unfortunate cold fusion folks were challenged.  I also wonder how many of you
thought that the intentions of the challengers (or the claimers!)  were
anything less than honorable.  I'm sure that P&F were too smart to think that
no one would try to duplicate the results -- what could their lasting fame
have been if the results couldn't be applied?

Sorry guys -- dogs bite and we question.

Ciao,

Rich






   "Please keep in mind that the ultimate goal [of hi-fi] is the
   reproduction of art, and that the invocation of science, while a neat
   parlour trick, is often unnecessary, flawed, and unreasonable."
   --  name mercifully withheld...                            rsd@sei.cmu.edu
Newsgroups: rec.audio
From: image@leland.Stanford.EDU (John B. Mooney)
Subject: Audio Equipment for Sale
Organization: DSG, Stanford University, CA 94305, USA
Date: Wed, 7 Oct 92 02:20:57 GMT

I am posting this for an acquaintance.  I have delt with him previously and
I haven't had any problems.

FOR SALE:

Magnepan MG-3.3R              $2300
Aragon 4004 Amp               $1350
Acurus L-10 Pre-amp           $ 325

All equipment is 6 months old and is in _mint_ condition.

PLEASE RESPOND TO:
Tim Altenhofen
(515) 792-5200

Tell him John sent you.

  -- John Mooney, image@leland.stanford.edu
 

-- 
Newsgroups: rec.audio
From: srgcraf@grace.cri.nz (Ross A Fletcher)
Subject: Re: Cassette copies of CDs
Organization: Industrial Research Ltd
Date: Fri, 2 Oct 92 02:18:52 GMT

In article <1992Oct1.132626.7478@dartvax.dartmouth.edu> Donald.E.Reed@dartmouth.edu (Donald E. Reed) writes:
>Subject: Cassette copies of CDs
>From: Donald.E.Reed@dartmouth.edu (Donald E. Reed)
>Date: 1 Oct 92 13:26:26 GMT
>
>What brand of Multi Disk CD player and Cassette Deck enables you to
>make the easiest and best copies of CD to Tape?  I'd appreciate any
>information you may have.
>
>Thanks
>Don Reed
>Dartmouth College

It all depends on what sort of $$ you want to spend.  Because of the large 
dynamic range on many CDs you need to use good quality tapes because they 
generally have a larger "head-space" (chrome is generally fine but so are 
many of the better ferric ones).  You need to spend a few dollars per tape 
- don't expect miracles from an eighty cent tape.  The coating is usually 
inferior and the tape transport diabolical.  So far as players and decks go, 
you largely get what you pay for.  Because CDs operate on a time basis you 
need to buy a player capable of displaying several time settings e.g. 
elapsed time and time remaining on the disk. There used to be tape decks 
around that would give the same information (although not quite so 
precisely) and these were excellent if you were doing a lot of taping.  
Certainly JVC produced one but probably others still do.  Look around for 
one.  Theres nothing more infuriating than being ten seconds short at the 
end of a tape when recording something twenty minutes long.

Ross.
From: kim@Software.Mitel.COM (Kim Letkeman)
Newsgroups: rec.audio
Subject: Re: need recommendations for center channel speaker
Date: 30 Sep 92 20:59:35 GMT
	<BvDBI7.C6L@comp.vuw.ac.nz>
Organization: MITEL Public Switching, Kanata, Ontario, Canada
In-reply-to: brian@comp.vuw.ac.nz's message of 30 Sep 92 01:44:29 GMT

In article <BvDBI7.C6L@comp.vuw.ac.nz> brian@comp.vuw.ac.nz (Brian Boutel) writes:
| - An identical speaker may sound different when used in the centre position
|   because it's position relative to walls, floor, ear level is different 
|   from the main speakers.

True, but it is almost certain that the best tonal match for the front
speakers will be an identical speaker. From what I've read, this is
what Dolby is now recommending.

| - Most speakers can't be placed too close to a crt without causing screen
|   distortion and possibly damage, so positioning has to be a compromise 
|   between safety and ideal sound. I suppose the best way is to use a front
|   projector with the centre speaker mounted behind the screen, if that is
|   acoustically reasonably transparent. (Are there such things?)

There are a lot of quite good speakers designed for video
applications. They come in matched sets and are shielded. Also, some
manufacturers of high end speakers build center channel models with
the same tonal balance (e.g.  Definitive Technology has one to go with
the BP10/20).

I agree, though, that in older setups, compromises are necessary. I
use a pair of Mission 760's, which are pretty close tonally to my
Dayton Wrights. I have to keep them a foot above the TV, but there is
no noticeable change in tone during pans so I'm perfectly happy with
the setup.
--
Kim Letkeman	kim@Software.Mitel.COM
Newsgroups: rec.audio
Subject: Re: need recommendations for center channel speaker
From: brian@comp.vuw.ac.nz (Brian Boutel)
Date: Wed, 30 Sep 1992 01:44:29 GMT
Organization: Dept. of Comp. Sci., Victoria Uni. of Wellington, New Zealand.


In article <5311@gold.gvg.tek.com>, chrisc@gold.gvg.tek.com (Chris Christensen) writes:

|> 
|> The best center channel speaker for a home theater is one that is
|> sdentical to the left and right speaker.


Yes, but

- An identical speaker may sound different when used in the centre position
  because it's position relative to walls, floor, ear level is different 
  from the main speakers.

- Most speakers can't be placed too close to a crt without causing screen
  distortion and possibly damage, so positioning has to be a compromise 
  between safety and ideal sound. I suppose the best way is to use a front
  projector with the centre speaker mounted behind the screen, if that is
  acoustically reasonably transparent. (Are there such things?)

_ Many (almost all?) speakers are only available in pairs, so getting 3 may 
  involve paying for 4.

So I'd modify Chris' assertion to:


The best center channel speaker for a home theater is one that, in situ,
sounds identical to the left and right speaker.

--brian

-- 
Internet: brian@comp.vuw.ac.nz
Postal: Brian Boutel, Computer Science Dept, Victoria University of Wellington,
        PO Box 600, Wellington, New Zealand
Phone: +64 4 471-5328   Fax: +64 4 495-5232
Newsgroups: rec.audio,rec.video
From: smills@news.weeg.uiowa.edu (MuffinHead)
Subject: Re: Hi-Fi VCRs
Organization: University of Iowa, Iowa City, IA, USA
Date: Wed, 30 Sep 1992 09:31:40 GMT

dcha@flex.com (Doug Cha) writes:
>smills@news.weeg.uiowa.edu (MuffinHead) writes:
>>    TDK EHG. They don't have "HiFi" plastered all over the label.
>> I normally use just TDK HS's for most of my recording and have found no
>> problems with the audio handling.
>>    The POINT I'm trying to make is that just because a tape is labeld "HiFi",
>> doesn't mean it's a quality tape. Hell, I've seen Certron's with "HiFi" on
>> the label.

>You may be right about not totally trusting a label, but TDK-EHG sure as hell
>aint a HI-FIdelity brand tape, nor it is a Higher than HiFi tape.  He's
>thinking more on the lines of Sony Pro-X, and the other "Pro" labels that cost
>about $8-9 per tape.

   Damn, I hate saying the wrong thing. Or did I? I can't keep track of
all the different tape "models", especially when they all have some of the
same letters in the names.

Muff
Newsgroups: rec.audio
From: DPierce@world.std.com (Richard d Pierce)
Subject: Re: ReVox A-77 Question
Organization: The World Public Access UNIX, Brookline, MA
Date: Wed, 30 Sep 1992 12:24:48 GMT

In article <1992Sep30.100810.27751@aston.ac.uk> evansmp@uhura.aston.ac.uk (Mark Evans) writes:
>covingc@ee.tamu.edu (Mouse) writes:
>: 
>: I recently obtained a ReVox A-77 reel-to-reel, and I would be interested
>: in getting some a operation or service manual for it.  Does anyone out
>: there have on of these, or an address or phone number for ReVox?
>
>I have a feeling that the company is based in germany.

Rather than a feeling, how about some facts?

In the USA, Revox service infor and parts are available from

     Studer Revox America
     1425 Elm Hill Pike
     Nashville, TN 37210
     (615) 254-5651

Studer is a collection of plants and facilities in Germany and
Switzerland. The A-77 was manufactured in Switzerland in its earlier days.


-- 
|                Dick Pierce                |
|    Loudspeaker and Software Consulting    |
| 17 Sartelle Street   Pepperell, MA  01463 |
|       (508) 433-9183 (Voice and FAX)      |
Organization: Doctoral student, English, Carnegie Mellon, Pittsburgh, PA
Newsgroups: rec.audio
Date: Sun, 4 Oct 1992 16:34:55 -0400 
From: Ken Zuroski <kz08+@andrew.cmu.edu>
Subject: What do you suggest?


I have a music collection composed of mainly CDs, BUT: I have perhaps three
hundred albums which I never listen to, since I don't have a turntable. I'd
like to buy a turntable and tape them all, since many are not available on
CD anymore.

However: maybe 100+ of these old albums are old 78's (only a few of which
I've ever heard, incidentally, again because I don't have a turntable). I've
started to shop around for a turntable, but it seems that most of the better
ones only play at 33 and maybe 45 rpm. 

Where do I look for a semi-decent turntable that can also handle 78's? I 
obviously don't know much about this, so any advice you can give is much
appreciated.

ken

---
~~~~~~~~~~~~~~~~~~~~~~~~~~~
Ken Zuroski
Department of English
Carnegie Mellon University
Pittsburgh, PA 15213 USA
kz08@cmu.edu
~~~~~~~~~~~~~~~~~~~~~~~~~~~
From: kurts@hpnmdla.sr.hp.com (Kurt Strain)
Date: Tue, 6 Oct 1992 21:55:10 GMT
Subject: Re: Re: Choosing Cables (Was  Re: Very expensive cables)
Organization: Outpost 1T
Newsgroups: rec.audio

In rec.audio, billn@hpcvaac.cv.hp.com (bill nelson) writes:

    jj@alice.att.com (jj, all-around skeptic and curmudgeon) writes:

    : >real PhD, I must have mistaken you for someone important.   Now as far
    : >as I'm concerned, your ass is history.  So piss off, boy. 
    : 
    : Well, I won't claim that we're discussing religion, but I will
    : point out that this is the same reply to a skeptic when a religious
    : person finally gets tired of loosing to reason.  Basically,
    : it goes "I will shun the unbelievers".
    : 
    : Shun me too, Kurt.

    Yeah. And all the rest of us who rely on logic, analysis and evidence
    instead of simple blind faith.

    Bill


I got news for jj.  He was first on my list.  And Bill apparently wants to 
gang up and be his pride and joy.  Wow, I'm so honored to have such company
hate me.  It's mutual, to be sure.  Drop dead, Bill.  Don't do anything in
life without your evidence.   Wait to have the doctor tell you how to treat
untreatable illnesses.  Wait for all the scientists to come up with your
much required evidence.  Rot in hell when you finally get it, too.  I guess
you must have evidence that walking is possible before you tried it.  
Don't figure anything might be possible or that's your idea of blind faith. 
Losers.
Newsgroups: rec.audio
From: kjt001@dunix.drake.edu (Kevin Tieskoetter)
Subject: What was that about Center speakers for Pro-logic?
Organization: Drake University, Des Moines, Iowa, USA
Date: Thu, 1 Oct 1992 02:37:07 GMT

I realize this was here just a little while ago, but I didn't have a
pro-logic receiver yet...so here we go again...


Where can i find a pretty low-cost powered speaker to use as a center
channel?  I'm looking for something <$20 if possible...

I just got a Technics SA-GX 505 reciever (for a great price - I got 
around 33% off of the original price!) and I need to find a center
speaker for it.

-kevin
From: ftsai@Bonnie.ICS.UCI.EDU
Subject: test
Newsgroups: rec.audio
Date: 28 Sep 92 16:58:05 GMT

This is a test.
Newsgroups: rec.audio
From: smills@news.weeg.uiowa.edu (MuffinHead)
Subject: Re: Wireless Headset Mics?
Organization: University of Iowa, Iowa City, IA, USA
Distribution: usa
Date: Wed, 30 Sep 1992 09:35:32 GMT

chrisc@gold.gvg.tek.com (Chris Christensen) writes:

>(Michael Rebholz) writes:

>>I have been looking locally for a wireless headset microphone, and have not
...

>I would suggest you contact your local distributor of Nady products.
>Order the Nady 201 system with then lav pack.
>You can get this system with a mini-xlr connector on the transmitter and 
>purchase a Shure headset mic.   The headset mic can then be wired into the 
>the mini-xlr connector.

   No way, the Shure headsets sound like crap (SM-10a if memory serves me
correctly). Go for the Audio Technica. It is by FAR the best headset on the 
commercial market.

Newsgroups: rec.audio
From: trw@spl1.spl.loral.com (Tim R Witort)
Subject: Re: DAT prices
Organization: Loral Software Productivity Laboratory
Date: Tue, 29 Sep 1992 18:14:35 GMT

In article <BvBFMq.6rA@news.cso.uiuc.edu>, mci41087@uxa.cso.uiuc.edu (Occaisionally) writes:
|> What are the best prices everyone here has seen for new DAT players?  I am 
|> hoping to be in the market for one soon, and was just curious about price 
|> trends.

  $550 - $700.

-- Tim
Newsgroups: rec.audio
From: gcastrat@silver.ucs.indiana.edu (Giancarlo Castrataro)
Subject: Acoustic Research Speakers Okay?
Organization: Indiana University
Date: Sat, 26 Sep 1992 17:23:46 GMT

     I have a small room and am interested in purchasing some speakers for it.
The only catch is that they have to be shielded (for my computer).  Does anyone
know if AR's Powered Partners or Studio Partners would sound okay?  Also, what
is the difference?  Could anyone send me the straight s*it on this?

-Giancarlo Castrataro

NeXTmail: gcastrat@zuni.ucs.indiana.edu
From: gds@cbnewsi.cb.att.com (glenn.d.strouse)
Newsgroups: rec.audio
Subject: What happened to WDS
Date: 1 Oct 92 18:49:31 GMT
Article-I.D.: cbnewsi.1992Oct1.184931.11767
Distribution: usa
Organization: AT&T


   I have purchased audio and video gear from a company called WDS ( Wisconsin
   Discount Stereo)  in the past. They had very good prices and service. 

   I am now ready to make a purchase again, the problem is that when I called
   the numbers that I used in the past, I was told that they were disconnected.

   Does anyone know if they went out of business, or changed the name? 

   glenn
Newsgroups: rec.audio