[sdiy] Fast envelope follower circuit needed..

[Richie Burnett]

> A 2000 tap FIR filter only requires the same amount of DSP grunt as a 20 
> tap filter if you can drop the sample rate of the output by a factor of 
> 1/10.

Sorry, that should have said ...if you can drop the sample rate of the 
output by a factor of 1/100.

-Richie,