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From: Charlie E. on 4 Jun 2010 17:09
On Fri, 4 Jun 2010 13:37:38 -0700 (PDT), whit3rd <whit3rd(a)gmail.com>
wrote:

>On Jun 3, 9:11�am, Charlie E. <edmond...(a)ieee.org> wrote:
>
>> For that, all you need are four ganged pots, with �a 90 degree dead
>> zone, set 90 degrees apart...
>
>But, it has to move at up to 40 Hz rotation rate? That bunch of
>pots will wear out fast. Either a capacitive or inductive
>solution would work better, longer. And there's the small matter
>of driving the shaft according to some (yet unspecified) rule of
>position-versus-time.

Actually, if I had to do this, I would use four digital pots and a
micro, to do the logic of what the different pot settings needed to
be. No wear or tear then...

Charlie
From: Jasen Betts on 26 Jun 2010 20:07
On 2010-06-02, Greg Hanson <greghanson(a)prograde.com> wrote:
> Has anyone seen a circuit, or commercial product, that enables one to
> pan (rotate) a mono audio signal 360 degrees around 4 speakers
> arranged in a circle?
>
> Ideally, speed of rotation needs to be manually adjustable across the
> full range of 1-40Hz.
>
> There are plenty of 2 channel panners out there, but they do not suit
> this application.

Sort of a solid-state Leslie effect?

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