[sdiy] Simple (?) sequencer mod for syncopation

[Steven Cook]

>>> 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

Also the cutoff frequency of the ETI4600 VCF.

Steven Cook.
http://www.spcplugins.com/