Path: utzoo!utgpu!water!watmath!clyde!att!icus!limbic!gil
From: gil@limbic.UUCP (Gil Kloepfer Jr.)
Newsgroups: sci.electronics
Subject: CODEC - How to get one?
Message-ID: <375@limbic.UUCP>
Date: 12 Oct 88 05:29:02 GMT
Organization: ICUS Software Systems, Islip, NY
Lines: 22

Recently, I have been playing around with sound digitization, and was able
to get a peek at a commerical unit.  It had a chip in it that was referred
to as a CODEC.  This appears to be a A/D & D/A converter with an audio
compression that they refer to as mu and A law.

Can anyone provide input on what the mu and A law compression schemes are,
and (especially) how I would go about getting a CODEC chip (prices, locations,
etc).  Would a company like Motorola, AT&T, or TI provide evaluation kits
with these chips?

It seems like AT&T Microelectronics is the biggest supplier of such chips,
probably because they are used in digital telephone equipment.  I really
don't know how to go about getting in touch with them about getting a
single-quantity chip (oh well...).

Thanks in advance for any info.  This sounds like a good subject to post
responses to because I think it would be of interest to the net.

Gil Kloepfer, Jr.          U-Net: {decuac,boulder,talcott,sbcs}!icus!limbic!gil
ICUS Software Systems      Voice: (516) 968-6860 [H]   (516) 746-2350 x219 [W]
P.O. Box 1                 Internet:  gil@icus.islp.ny.us
Islip Terrace, NY  11752   "Life's a ...  well, you know..."