[sdiy] Simple (?) sequencer mod for syncopation

[Amos]

On Fri, Jun 5, 2009 at 10:53 AM, Ingo Debus<igg.debus at t-online.de> wrote:
>
> Am 05.06.2009 um 12:16 schrieb Tom Wiltshire:
>
>> I remember seeing this technique described in one of R.M.Marston's old
>> CMOS books, where he makes variables resistors / potentiometers out of 4066
>> switches.
>
> The cutoff frequency of the state variable filter in the Cry Baby 105Q Bass
> is controlled this way.
>

Also, the center frequencies of the bandpass filterbank in the Moog MuRF...
(an extra cap is switched in/out of each filter circuit by a
high-frequency PWM signal; varying duty cycle changes the "average"
cutoff of each filter)

-Amos