[sdiy] Mitxela combined knob & socket

[cheater cheater]

What you really want is a power series:

... + a_-n * f^-n.x + ... + a_-1 * f^-1.x + a_0 * f^0.x + a_1 * f^1.x
+ ... + a_m * f^m.x + ... + C

For . = apply and f = exp and limiting to n=m=1, you get

a_-1 * ln(x) + a_0 * x + a_1 * e^x + C

or for people scared of subscripts:

u * ln(x) + v * x + w * e^x + C

This gives you a lot of control.

On Mon, Jun 9, 2025 at 11:31 PM Mattias Rickardsson <mr at analogue.org> wrote:
>
> Nice engineering, but... misunderstood?
> Parameters almost always need
>
>    value + control signal*amount
>
> I've never encountered a parameter where I'd be okay with removing the parameter value setting and replace it with a CV at full amplitude. 🙂
>
> /mr
>
>
> Den mån 9 juni 2025 02:46Ben Stuyts via Synth-diy <synth-diy at synth-diy.org> skrev:
>>
>> This is just great: https://youtu.be/dLw2QQdOLaM
>>
>> I’m not sure how useful it would be in practice, or how wel it would stand the test of time. (As he says so himself.) But I’m very impressed by the concept. One of those things that seems obvious once you’ve seen it, but being the first to come up with this is extremely impressive to me. Or has anything like this been done before?
>>
>> More info here: https://mitxela.com/projects/euroknob
>>
>> Ben
>>
>>
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