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Re: [Doepfer_a100] Re: Doepfer A-131 exponential VCA - calibration procedure

2019-02-21 by Florian Anwander

Hello


Am 21.02.2019 um 17:06 schrieb man.of.mystery@ntlworld.com [Doepfer_a100]:
> Okay, Florian.  What are the units of your graph?
>
> Hearing is logarithmic, so try redrawing that graph with the y axis in dB.
>
> What do you see?

There is no unit necessary. The unit might be "count of goldfish in a pool".

The important thing is the difference to a linear control. 
Mathematicians understand exponential control like in
https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Exp_e.svg/2000px-Exp_e.svg.png
where the common point of the linear function and the exponential 
function is at X=0.
(as in 
https://upload.wikimedia.org/wikipedia/commons/thumb/3/38/Exp_e.svg/2000px-Exp_e.svg.png)

But in the synth world the common point of linear and exponential 
control is the Xmax. (and in aproximation Xmin).
http://www.florian-anwander.de/exponential_control.jpg (I added a linear 
control line).


Florian

-- 
http://www.florian-anwander.de

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