[sdiy] How to avoid clicking gates

[David G. Dixon]

Yes, Florian, and I have an octave selector circuit breadboarded and a pcb
layout ready to etch to add to my matrix scanning circuit.  Since my matrix
is 12 x N (as opposed to the more conventional 8 x N), all I have to do is
intercept the three MSB from my matrix counter and add a binary number
between 0 and 4 to it before sending it to the latch.  This expands my
keyboard up to 8 octaves, and will take care of the issue of mismatched
oscillators and filters.

> > One thing I discovered while playing the string bass sound was that, if
> I'm
> > sending the keyboard CV to the filter cutoff as well as the oscillator,
> then
> > if the oscillator's tuning range is adjusted, the filter's cutoff must
> also
> > be adjusted to maintain sound quality.
> 
> That is what transpose switches/potentiometers at the keyboard are for.