[PD] recirculating delay line reverberation time calculation
claudiusmaximus at goto10.org
Fri Aug 29 23:07:30 CEST 2008
Referring to Miller's book , and having experimented with various
delay times, I'm wondering what the "average" delay time used in the
text is. If all the delay times are close to equal, then using the
arithmetic mean as "average" gives me a reasonably accurate
reverberation time calculation. But the more they differ the worse the
result is (comparing with measurement against my implementation).
Intuitively it seems that the sound recirculates more often (and is thus
attenuated more) through the shorter delay lines, but this is obviously
not taken into account with arithmetic mean. I'm thinking something
like harmonic mean might be better (but I tried it and it wasn't a huge
improvement, nor was geometric mean).
Any clarification would be enlightening, thanks,
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