[AD] sound frequency?

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When testing the digmid patch before.. I noticed something strange:
Allegro's ALSA driver would pitch my .mids slightly higher than the OSS
driver. I found out, the difference is due to the default frequency:
ALSA uses 44100, OSS 45454.

I have no idea how sound works.. but still, I'm wondering now. Why do
different frequency values change the pitch of a midi, and which value
should be used as default? Different values for OSS/ALSA as right now
probably is not the right thing.

Anyone can shed light on this?

-- 
Elias Pschernig <elias@xxxxxxxxxx>





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