[sdiy] Resonance control taper ?

[Tom Wiltshire]

This almost becomes another argument for programmability in synths. As soon as you have programmability, all the controls *do* become 10K linear because they're just a panel being scanned and having their values sent to DACs. If you need a specific reverse-log curve for a specific control, it's a look-up table away.

Tom

> On 16 Sep 2022, at 19:37, Mike Beauchamp <list at mikebeauchamp.com> wrote:
> 
> 
> 
> On 9/10/22 22:55, Danjel van Tijn / intellijel wrote:
>> It would be interesting to see a list of famous filters/synths and what control curve they implemented. For example, the SH-101 and Oberheim SEM both use linear tapers.
>> cheers,
>> Danjel
> 
> 
> There's a possibility that the tapers chosen for those famous synthesizers had more to do with cost reduction and BOM consolidation than what actually feels best for the user.
> 
> 
> I have settled on the reverse-audio taper for resonance after trying all of the different tapers and picking the one that felt the most natural, where a 20% rotation yields a 20% change in perceived sound.
> 
> Of course, that's the only reverse-audio taper pot in my entire bill of materials.. and it would be so much easier if every potentiometer was just a 10K Linear.
> 
> I try to spend a lot of time selecting pot tapers though, testing the perceived changes and having other people rotate the knobs while listening for the changes. I hate knobs that seemingly do nothing for half of their travel.
> 
> It might be worth noting that pot manufacturers like Alpha offer many taper curves that sit between exponential and linear, S curves, etc.
> 
> 
> 
> Mike
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