Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!rice!sun-spots-request
From: soleil!gopstein@rutgers.edu (Rich Gopstein)
Newsgroups: comp.sys.sun
Subject: Re: Description of SPARC soundfile format?
Keywords: Miscellaneous
Message-ID: <3070@brazos.Rice.edu>
Date: 14 Nov 89 21:11:47 GMT
Sender: root@rice.edu
Organization: Sun-Spots
Lines: 18
Approved: Sun-Spots@rice.edu
X-Refs:  Original: v8n194, Related: v8n193
X-Sun-Spots-Digest: Volume 8, Issue 198, message 5 of 18

In article <2967@brazos.Rice.edu>, sandell@ferret.ils.nwu.edu (Greg Sandell) writes:
> Does anybody know the file format for soundfiles on the SPARC?  I checked
> all three of the following, and none of them had this information:

A quick look through /usr/demo/sound/sound.c and the related .h files will
tell you that the format the files are in is called uLAW format.  (that's
actually Mu-LAW format).  It appears that the chip can handle aLAW and
straight binary formats also, but I'm not sure how.

The sampling speed is 8k samples/second.  Each waveform sample is stored
in one byte in uLAW format.  uLAW format is a simple data compression
format designed to store audio waveforms in one-byte samples.

I will post my sampled-binary to uLAW conversion program soon, there has
been enough interest in it.

Rich Gopstein
..!rutgers!soleil!gopstein