Message 32/32
Date: 27-Sep-02 @ 01:17 PM -
RE: virus filter
From Christoph Kemper, CEO of Access Music, Gmbh.:
"Self oscillation is, when the resonance control - which is a sort of Feedback actually - can be set to values above 1, so the filter amplitude is increasing by itself until it hits the headroom, and than sticks there. This is identical in analog and digital domain. For the exitation, you need some signal. In the analog domain noise is always apparent, in digital domain you can add some dither noise to archive the same effect. But noise is not the reason for self oscillation.
The Virus filters do not allow self oscillation, but still allows very high resonances resp. Q-factors.
Waldorf does more to archive self resonance than simply adding noise. But that makes the filter sound different even on lower resonances ..."
Just turn up a bit of noise on the virus...full resonance...turn down the cutoff...et voila.