The multi-mode filter is pretty much complete. I still may have to figure out what may be a problem with self-oscillation when the resonance is turned up, but it may turn out to be a "feature".
I now have four filter types. I've done a filter sweep from low to high (I think it's about 16 Hz to 12 kHz) with the noise oscillator producing its version of white noise passing through each of the modes.
http://www.scuzzyeye.com/tests/noise_bandpass.mp3http://www.scuzzyeye.com/tests/noise_highpass.mp3http://www.scuzzyeye.com/tests/noise_lowpass.mp3http://www.scuzzyeye.com/tests/noise_notch.mp3And here's the unfiltered noise source if you want to check it:
http://www.scuzzyeye.com/tests/noise_nofilt.mp3I'll see about tackling the envelope generator tomorrow.
