The LOG pot is a nice idea, Alain's routine too. You can also build a huge LOOKUP table with excel and read from it. If you have some VCA (like ssm2164) you can use a Linear pot and get a LOG curve.
Many different ways.
At least, there's some progress 
PS: you can trick the curve a little bit by adding a resistor in parrallel with the wiper... far to be LOG, but could be interesting to trace the curve...
THE PWM freq shouldn't affect the results... shouldn't..
Last edited by mister_e; - 22nd April 2007 at 18:30.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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