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Hi!

Is it possible to write a sound file to /dev/dsp and hear the right sound? I've tried it with .WAV but it isn't working. If it's possible please tell me which sound format it is

Thanks

That sounds suspiciously like a pure linux (or other similar OS) question to me, rather than a OSdev one...

Hmm.. So i asked that because i've ported sound driver from linux. So now it's working under VMware and i'd like to play something easily. I just don't know how

Hehe... I did it, wav playing is working!

And for those who wonder: yes, the old OSS drivers work exactly that way. You dump raw data into /dev/dsp and it gets played. Format/samplerate/whatever can be configured with various ioctl()-calls (surprise?).

If one just dumps a .wav into /dev/dsp, one will normally hear it, but it will be played with the default settings (which might be 8-bit unsigned ?-Law mono 22050 or pretty much anything else) which naturally can do all kinds of funny things with the sound. In addition, there will be a burst of noise in the beginning of the sound, because .wav files contain a header, which is not audio data, and throwing that through speakers makes no sense. Finally, this is assuming the .wav isn't compressed, which actually is possible.

mystran wrote: And for those who wonder: yes, the old OSS drivers work exactly that way. You dump raw data into /dev/dsp and it gets played. Format/samplerate/whatever can be configured with various ioctl()-calls (surprise?).

Common way for computer nerd to test whether the sound card works: NTFS sounds rather funny actually

Yeah... Just some IOCTL were missing... That was the problem first time i tried WAV

Candy wrote:

mystran wrote: And for those who wonder: yes, the old OSS drivers work exactly that way. You dump raw data into /dev/dsp and it gets played. Format/samplerate/whatever can be configured with various ioctl()-calls (surprise?).

Common way for computer nerd to test whether the sound card works:

Code: Select all

cat /dev/hda >/dev/dsp

NTFS sounds rather funny actually

This is one thing I'm going to try out, heh.