On 11/14/2012 04:58 PM, David Rowe wrote:
I have had my head down working
on the fdmdv2 GUI program with Dave Witten, which we hope to release
before the end of this year.
Thank you.

         1/ Many of the samples sound less clicky or buzzy, more natural.
Agreed. There is less buzz.

Naive questions follow, sorry.

Could it be that some of the buzz we were hearing was adjacent buckets heterodyning against each other? Especially at lower frequencies?

Can we make the FFT faster by throwing away buckets we no longer use?
2/ However the level of many samples has shifted down, they
         sound quieter
Is it lower simply because we are now summing less energy per harmonic?

In some of the samples there is more ringing or reverberation, the "speaking into a jar" effect. Or maybe that was just hiding behind the buzz previously.
3/ Also some of the samples sound more band-limited, this might
         affect intelligibility, not sure.
High frequency harmonics missed the bucket we are sampling? Perhaps we need a wider sample at high frequencies than at low ones? Or perhaps the bucket was off-frequency?

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