new Formant book arrived

jh. jhaible at t-online.de
Mon Nov 6 03:39:34 CET 2000


>I've done it too, and it locks up when overdriven. But this raises the
>question if thats possible at all within the new formant system. In mine it
>isn't.

Maybe it doesn't lock. In OTA polygon filters with 1/1+s it does lock
because of the "short" feedback loop that turns intopositive feedback.
The SVF structure as used in the new Formant might not be as critical to
locking. Not that I think phase reversal sounds nice, even if it doesn't
lock
up ...
Why not simply use an inverting integrator, and switch the two OTA
inputs ??

JH.





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