On Mon, 25 Aug 2008 15:27:11 -0500, Mike McCarty wrote: > Michael Schwendt wrote: > > On Mon, 25 Aug 2008 14:26:25 -0500, Mike McCarty wrote: > > > >> Can anyone tell me what formats /dev/dsp, /dev/dsp56k, > >> /dev/audio, etc. expect? It seems that I can copy > >> a WAV format file directly to /dev/dsp and get recognizable > >> sound. I wonder just what format they actually expect. > > > > /dev/audio used to accept µ-law encoding, /dev/dsp accepts raw pcm as > > configured via ioctl. The device doesn't evaluate any WAV header. > > Thanks! So, if I want to use sox, I can specify the output to be > /dev/dsp and raw, and the input format to be whatever corresponds.
Ask kernel devs whether you can still expect a specific raw format. There are several parameters that must match: bits per sample, signed/unsigned samples, number of channels (mono/stereo), frequency Btw, it's likely that /dev/dsp will go away in the future, as it's only a compatibility device file for the old OSS driver architecture (unload a kernel module, and the device file is gone). ALSA uses different device files. -- fedora-list mailing list fedora-list@redhat.com To unsubscribe: https://www.redhat.com/mailman/listinfo/fedora-list
