[Rpcemu] Problematic SoundDMA buffers rate/size combination

Timmermans, Andre andre.timmermans at atos.net
Mon Nov 30 23:34:29 PST 2015


While experimenting with KinoAmp on RpcEmu (latest Windows version) I noticed that sound was to slow
and because sound and video where synchronized the video was played at half rate. This was curious
as an error sound before KinoAmp was fine and playing DigitalCD was fine too. It’s actually a given
sample rate & buffer size combination which causes the problem due I think to the fact that more
 than 100 buffers need to be filled per second.

My experiments shows:
28333Hz, 208 samples per buffer -> OK
44100Hz, 208 samples per buffer -> Problem
44100Hz, 512 samples per buffer -> OK

Kind Regards,
André Timmermans

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