Subject: Re: PC Windows Wave files From: Malcolm Crawford <M.Crawford(at)DCS.SHEF.AC.UK> Date: Tue, 19 Apr 1994 15:01:01 00100> I'm trying to convert PC Windows 3.1 "Wave" files to a different format. > Unfortunately I can't work out the format of the Wave files. I'm guessing > that they contain a header followed by 16 bit data (stored contiguously > for a single channel, or alternate samples for stereo), but when I try > to read this stuff nothing terribly meaningful comes out. A good introduction to all file-format and related questions is pointed to in the comp.speech FAQ: > Q1.8: Speech File Formats, Conversion and Playing. > > Section 2 of this FAQ has information on mu-law coding. > > A very good and very comprehensive list of audio file formats is prepared > by Guido van Rossum. The list is posted regularly to comp.dsp and > alt.binaries.sounds.misc, amongst others. It includes information on > sampling rates, hardware, compression techniques, file format definitions, > format conversion, standards, programming hints and lots more. It is much > too long to include within this posting. > > It is also available by ftp > from: ftp.cwi.nl > directory: /pub/audio > file: AudioFormats<version> > When you retrieve the files from ftp.cwi.nl, you'll find a further pointer to another file on ftp.cwi.nl, "RIFF-format", which contains probably more than the information you're after! (If you want me to Email it to you, please ask.) There are, however, a number of format conversion utilities around which might save you some coding: I use a NEXTSTEP interface (GISO) to sox, which seem to be popular -- maybe someone else could give a pointer to original sources? Have fun, mmalcolm. SHeffield Auditory Group | Vox : (+44) 742 768555 ext 5569 Dept. Computer Science | direct : 825569 Sheffield University | Fax : (+44) 742 780972 Regent Court | Email: malc(at)dcs.shef.ac.uk 211 Portobello Street | (NeXTMail, MIME welcome) Sheffield S1 4DP, UK. | (Read-Receipts discouraged :-)