[sdiy] VC GLIDE and ADSR

David Cornutt cornutt at hiwaay.net
Sat Apr 22 10:16:11 CEST 2006


On Apr 21, 2006, at 9:29 PM, harry bissell wrote:

> Why would that be a two-pole response. I'd think the "glide" would be
> a single RC (one pole).
>

Point taken.
>

> And a "slew limit" a type of audio rate distortion (that IS linear)
>

Yes, but I've often heard people refer to a glide or portamento circuit
as a "slew limiter", and that's usually followed by the nonsensical
statement that "a slew limiter is just a lowpass filter, and it of 
course
has no effect on a sine wave."  (In fact, I actually saw this statement
in a book chapter about the ARP 2600.)  That grates on my nerves
for some reason -- a true slew limiter circuit sure as heck *will*
distort a sine wave, if the freq/amplitude is high enough.



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