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valp1 is a VA one-pole lowpass filter implemented in ANSI C: pbat.ch/sndkit/valp1/ using

It's based on the implementation found in the The Art of VA Filter design by Vadim Zavalishin, a engineer of native instruments and creator of Reaktor.

I've uploaded a sample of what it sounds like when you use it to filter noise. Because it's only 1-pole, it sounds an awful lot like gain control.

I've also ported it to a node in . Here's the code used to generate the sound:

patchwerk nodes

0.5 noise
1 1 sine 100 1000 biscale
valp1

"valp1.wav" wavout bdrop

sr 20 * _compute rep

· · brutaldon · 0 · 0 · 0
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