From ajr@eng.cam.ac.uk Tue Aug 16 23:34:44 1994
From: ajr@eng.cam.ac.uk (Tony Robinson)
Newsgroups: alt.binaries.sounds.misc,comp.sys.ibm.pc.soundcard,comp.sys.ibm.pc.soundcard.tech,comp.sys.sgi.audio,alt.binaries.sounds.utilities,alt.binaries.sounds.music,comp.sys.sun.misc,comp.sys.next.misc,comp.sys.next.software,comp.sys.sgi.audio
Subject: Re: ADPCM (and other comp. formats) Sound files ?
Date: 14 Aug 1994 10:37:24 GMT
Organization: Engineering Department, Cambridge University, England.
NNTP-Posting-Host: spud.eng.cam.ac.uk
In-reply-to: alt@foghorn.cc.utexas.edu's message of 13 Aug 1994 09:24:50 -0500

In article <32il3i$5df@foghorn.cc.utexas.edu> alt@foghorn.cc.utexas.edu writes:
> 
> Are there any software "compressors" available on the net? I picked up some 
> mpeg audio code (haven't compiled it yet), but I wondered if there were any
> other things out there (DOS or *nix).

Lots.  Many general audio compression and (all?) freely redistributable
speech specific compression packages can be found on:

	svr-ftp.eng.cam.ac.uk/comp.speech/sources

One new package is shn114.zip, which is a DOS port of shorten.  This
gives lossless and ADPCM style compression.  As it is designed for audio
it gives better lossless compression than general purpose packages (eg
gzip), and as it is designed for file compression it can give less
distortion than ADPCM algorithms which have to work at a fixed
compression ratio.  As I said, the DOS port is new, and I appreciate
hearing about any problems with it.

Tony Robinson