Is there any software can change wav file's bitrate

[Yama4050242]

but keep the sampling rate unchanged. just help a friend to ask this question, hope someone can help

[ursamtl]

Originally posted by Yama4050242
but keep the sampling rate unchanged. just help a friend to ask this question, hope someone can help

Commercial audio editors such as Sound Forge and Wavelab do this. For free you could try Audacity (audacity.sourceforge.net) or if you don't mind messing with command line (DOS) progs, try http://www.tsp.ece.mcgill.ca/MMSP/Documents/Software/. The r8brain mentioned online here is no good for what you're trying to do because you can't convert to 32-bit files using it unless you also change from 44.1kHz to 48kHz.

You could also use Plogue bidule (www.plogue.com). It converts 16-bit files to 32-bit when you load them into a file player object. Be sure to save the files as 32-bit using its file recorder object.

Hope this helps,

Regards,
Steve.

[Slogra]

A wav is a container like avi. So like an avi can contain uncompressed video, xvid or divx3/4/5 etc. A wav can contain uncompressed PCM, mp3, adpcm etc.

But in wav almost always uncompressed PCM is used. So as Steve said you can change the bit-depth of PCM sound to 8bit, 16bit, 24bit or even more.