For anyone heading pi-wards in future, I tried out Perry's advice and found dropping to 32khz as well as smarter resource management means I can run three concurrent SndBufs (with pans) and a three effect fx chain (including a mighty JCReverb!) simultaneously. It's modest, but enough for me to achieve the ambient driftyness I wanted. YMMV!
Cheers Stuart From: Perry Cook <[email protected]> > Thoughts from the battlefield: > > One nice thing about the Pi is that it supports many > sample rates. So if you can run at 22.05k or even > 16k or less, then you'll get much more bang for > your buck. > > Also, you might look into using WvIn (non looping) > or WavLoop (looping), rather than SndBuf, because > I think I remember that these are slightly more > efficient. > > Look into using some long delay lines (non-interpolating), > with feedback. These can really fatten up a texture without > requiring much CPU. > > Also be judicious about your efx, some will take more > CPU than others. > > Finally, if a wave is not playing sound, unchuck it at the > end of the chain, and it won't use any CPU while muted. > Keeping track of what's actually sounding, and muting > the rest (by unchuck) can really help. > > Prc >
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