I'm encountering a behavior with the vcf~ object that I don't understand, and I think it's contributing to a lot of popping noises being produced by my patch.
The behavior is this: even when the first and second vcf~ inputs stabilize at 0, I'm seeing an extremely low-amplitude, low-frequency signal continue to be output by the the vcf. It appears to have something to do with the middle inlet, as if vcf stops accepting inputs just before they reach 0.
I've included a simple patch here that illustrates the problem. The test frequency is defined by a phasor~, and both the test frequency amplitude and the center frequency itself are controlled by a simple ADSR envelope. The two inlets to vcf~ are snapshotted, as is the output, so you can see that even when the inputs go to 0, the output oscillates, very slowly and quietly.
I would massively appreciate any insight anyone has into this!