Basically, the ringing in moogvcf increases as it more an more approximates a
bandpass filter anyway.  As the resonance is increased, you get a more and
more prominent bump at around the cutoff frequency.  At some point, the pass
band of the bump looks a lot like a bandpass, except that the low side is
somewhat higher than the high side (though both are small compared to the
"passband").  So you should be able to get a similar effect with a narrow
bandpass with a lot of amplification, so that almost no matter what you put it
you get the center freq out (i.e. self-oscillation).  The major practical
difference is going to be getting a similar gain response.  You are probably
going to have to drive the bandpass harder to get the response you are looking for.
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Mike Berry
mikeb@nmol.com