[sdiy] Resonance control taper ?

[mark verbos]

You don’t even need to do that. If you put a fixed resistor in parallel with your pot, it makes a reverse audio.
A “tapered” pot is actually probably a better curve than any of the pots we’re using. Most of them have a single breakpoint. 

Mark







> On Sep 22, 2022, at 11:18 AM, rburnett at richieburnett.co.uk wrote:
> 
> It's also possible to adjust the apparent "taper" of a potentiometer by shunting the wiper to one or both ends of the track with fixed resistors of various values.
> 
> -Richie,
> 
> 
> On 2022-09-22 06:13, Ben Bradley via Synth-diy wrote:
>> I was just thinking of doing the nonlinear response conversion in
>> analog. Have a linear pot output a voltage that goes through a log or
>> exponential converter to a VCA/OTA in the signal path that controls
>> resonance. This is of course more circuitry, but eliminates a
>> specialty pot that may become hard to source.
>> On Sun, 18 Sept 2022 at 10:20, Gordonjcp <gordonjcp at gjcp.net> wrote:
>>> On Sun, Sep 18, 2022 at 02:01:21PM +0100, Tom Wiltshire wrote:
>>> > 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.
>>> I always thought it was hilarious how the Juno 106's PWM control has a fixed resistor in series to stop it going all the way to 0% PW.
>>> --
>>> Gordonjcp
>>> _______________________________________________
>>> Synth-diy mailing list
>>> Synth-diy at synth-diy.org
>>> http://synth-diy.org/mailman/listinfo/synth-diy
>>> Selling or trading? Use marketplace at synth-diy.org
>> _______________________________________________
>> Synth-diy mailing list
>> Synth-diy at synth-diy.org
>> http://synth-diy.org/mailman/listinfo/synth-diy
>> Selling or trading? Use marketplace at synth-diy.org
> _______________________________________________
> Synth-diy mailing list
> Synth-diy at synth-diy.org
> http://synth-diy.org/mailman/listinfo/synth-diy
> Selling or trading? Use marketplace at synth-diy.org