[sdiy] Resonator type filters

[rsdio at audiobanshee.com]

Good question, Tom.

Are there any string synth patents that we could read for clues as to the motivation behind the 30-band filter banks?

Brian


On Jun 30, 2017, at 1:46 AM, Tom Wiltshire <tom at electricdruid.net> wrote:
> Is there some reason why string filters use a large number of fixed bands, rather than fewer variable ones?
> 
> Mostly, we're trying to simulate certain resonances that occur in the bodies instruments (brass/woodwind/strings/etc) and there aren't 30+ of those.
> 
> It seems to me that (like the PolyMoog resonator from earlier) three, four, or five variable filters (SVF is the obvious choice) would be able to produce all the complex responses you might need, but with a saving in circuitry.
> 
> What are the differences between the two approaches? Why might you choose one over the other?