scream

[mbartkow at ET.PUT.Poznan.PL]

> This "screaming" is phase transition between two or more
> modes. A nonlinear dynamic system is needed.
> 
> A state var filter (for example) can do something like this,
> if overdriven and with a lot of resonance. The self oscillations
> starts to fight with the input signal, this causes "screaming".
> The more nonlinear the design , the better.
> 
> The WASP filter does this quite nice.


A more general (and somewhat "academic") approach would be to build
a possibly linear state var. filter and insert various nonlinearities
into the feedback loop. Such structure allows for crazy experimentation
which is not limited to symmetric or asymmetric clipping/soft saturation,
e.g. something similar to Serge waveshaper.

As far as I remember somebody mentioned his experiments with various
distorting elements within SVF. I would be glad to hear more about 
what kind of sonic effects may be obtained.

regards,

--

Maciej Bartkowiak
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