[sdiy] "AVR synthesizer"

[Jaroslaw Ziembicki]

----- Original Message ----- 
From: "Antti Huovilainen" <ajhuovil at cc.hut.fi>
To: "Jaroslaw Ziembicki" <aon.912230836 at aon.at>

> SVFs are problematic in digital domain. To guarantee stability at zero 
> resonance, you need to use 4x oversampling or limit the cutoff to 5khz 
> (assuming 44khz samplerate).

Antti, I believe it depends on how good the "digital integrators" are.
I did some experiments with a digital implementation of a SVF and there
were no stability problems. And I used no extraordinary arithmetics;
as I can recall, just a 16 bit fixed point.

Regards, Jarek