Erik de Castro Lopo wrote: > On Mon, 15 Mar 2004 23:26:51 +0100 > derek holzer <derek@xxxxxxx> wrote: >>Does anyone know a good command-line app to change bit depth of WAV >>files? I'd like to batch process a bunch of files. Ecasound does not >>have this feature to my knowledge. > In the libsndfile source code distribution there is an example program > called sndfile-convert: > > erikd@miles > sndfile-convert > > Usage : sndfile-convert [encoding] <input file> <output file> > > where [encoding] may be one of the following: > > -pcms8 : force the output to signed 8 bit pcm > -pcmu8 : force the output to unsigned 8 bit pcm > -pcm16 : force the output to 16 bit pcm > -pcm24 : force the output to 24 bit pcm > -pcm32 : force the output to 32 bit pcm > -float32 : force the output to 32 bit floating point > -ulaw : force the output ULAW > -alaw : force the output ALAW > -ima-adpcm : force the output to IMA ADPCM (WAV only) > -ms-adpcm : force the output to MS ADPCM (WAV only) > -gsm610 : force the GSM6.10 (WAV only) > -dwvw12 : force the output to 12 bit DWVW (AIFF only) > -dwvw16 : force the output to 16 bit DWVW (AIFF only) > -dwvw24 : force the output to 24 bit DWVW (AIFF only) > > The format of the output file is determined by the file extension of the > output file name. The following extensions are currently understood: > > aif : AIFF (Apple/SGI) > wav : WAV (Microsoft) > au : AU (Sun/NeXT) > snd : AU (Sun/NeXT) > svx : IFF (Amiga IFF/SVX8/SV16) > paf : PAF (Ensoniq PARIS) > fap : PAF (Ensoniq PARIS) > nist : WAV (NIST Sphere) > ircam : SF (Berkeley/IRCAM/CARL) > sf : SF (Berkeley/IRCAM/CARL) > voc : VOC (Creative Labs) > w64 : W64 (SoundFoundry WAVE 64) > raw : RAW (header-less) > mat4 : MAT4 (GNU Octave 2.0 / Matlab 4.2) > mat5 : MAT5 (GNU Octave 2.1 / Matlab 5.0) > mat : MAT4 (GNU Octave 2.0 / Matlab 4.2) > pvf : PVF (Portable Voice Format) > sds : SDS (Midi Sample Dump Standard) > xi : XI (FastTracker 2) > > libsndfile is at : > > http://www.mega-nerd.com/libsndfile/ > > Erik And of course, ecasound can be compiled with libsndfile support giving it access to pretty much all the above. -ERic Rz.
