On Fri, 10 Apr 2009 06:09:46 -0400, Nicolas Krieger <[email protected]>
wrote:
What I have tried was not good and make me think that the information
mono/stereo is in the data I give to the soundcard (I first thought there
was data for left and data for right).
Sound data ("PCM") is as you describe, "data for left and data for
right". They are usually stored in the buffer as a 16-bit left-channel
value followed by a 16-bit right-channel value, again and again for N
samples in the buffer.
How does your program open the sound device? If you are using SDL, you
need to set "channels = 2" and then take your mono buffers and copy each
16-bit value twice into the SDL output buffer. Or, you can tell SDL that
you have mono data, and then let SDL convert it for you.
If you wanted silence in the left channel and the mono audio in the right
channel (as your previous post seemed to say) then you would write 0x0000
for the left value and then copy 2 bytes from your buffer for the right
value.
-Mike
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