[sdiy] Digital noise sources

[Dave Manley]

Ken Stone wrote:
> Elektor circuits used to make a huge diode gate to deal with the detection
> of the illegal state. It is much easier to use a decoupling capacitor in the
> feedback loop with a pull-down/pullup resistor to the opposite level to the
> illegal one. E.g. if the register starts spitting out all 0s, the pullup
> resistor will charge the cap, putting 1s on the input, restarting the sequence.
>
> Ken
>   
This is a cool technique though I haven't seen it used.  Are there some 
commercial synths that used this?

-Dave