[sdiy] VCA response - continously variable between linearand exponential

rsdio at sounds.wa.com rsdio at sounds.wa.com
Sun Mar 3 05:49:17 CET 2013


I totally forgot about the Emily Litella character, or at least the  
name, but I get it now. I totally missed the boat on the VCO / VCA  
distinction. Usually I catch myself before I write an entire essay.

But in an attempt to save a little face, isn't exponential VCA  
response an attempt to cater to the human hearing system's perception  
of intensity as a logarithmic function? We hear volume in relative  
terms, not absolute. Decibels are logarithmic, and almost perfectly  
map to our perception of intensity of sound.

In other words, I again ask: Why would you want anything besides  
linear or pure exponential? Something in between doesn't seem  
terribly useful. (not that a synth designer shouldn't create  
additional parameters for variation)


On Mar 2, 2013, at 19:36, David G Dixon wrote:
> I think we're having an "Emily Litella moment" here:
> We're talking about VCAs, not VCOs!

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