[sdiy] [OT] Analog synths with 2 pole filters

[Ian Fritz]

At 09:36 AM 2/22/2013, Tom Wiltshire wrote:
>I'm all ears if anyone has better ways of compensating or avoiding the 
>phase lag though. Fancy-pants op-amps?!

Bernie did a study/writeup on this for EN.  IIRC, he included an opamp 
model with an extra pole.  From the model he figured out how to compensate 
for the HF phase shift.  The result was non-intuitive ... not as simple as 
adding caps at the integrator input.

Ian