Re: [Alsa-devel] Re: [Alsa-user] file.wav -> dsp issue
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From: Takashi I. <ti...@su...> - 2004-12-01 10:55:44
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At Tue, 30 Nov 2004 16:02:48 -0500, Lee Revell wrote: > > On Tue, 2004-11-30 at 15:05 -0500, Haines Brown wrote: > > > On Tue, 2004-11-30 at 13:04 -0500, Haines Brown wrote: > > > > # cat file.wav > /dev/dsp > > > > > > > > it seems to play at half speed (pitch is very low, playing speed very > > > > slow). > > > > > > > > Is the command above the best way to do a simple test of sound? Why > > > > should sending the file to dsp not play correctly? > > > > > > No, that is the way to do it with the deprecated OSS API. It seems like > > > a convenient, Unixy way to play sounds but there are many problems with > > > it. > > > > > > The ALSA way is "aplay file.wav". Does this work? > > > > Yes, that worked fine. I find that it plays WAV and VOC, but not MID > > and WMA files (just screeches). Thanks. > > Hmm, my point about the OSS api notwithstanding, seems like cat foo.wav > > /dev/dsp should work, if aplay groks the format. It seems to be > getting the sample rate wrong. I am cc'ing alsa-devel. "cat > /dev/dsp" itself doesn't parse the format but just handles as if a raw PCM data. It is pretty casual that it worked somehow. Takashi |