[sdiy] "lunetta"/CMOS sound-making equivalents in CProgramming???

[John Speth]

> One other possibility that no-one has mentioned is to use a variable
clock
> for the micro. The PICs can be clocked anywhere between 20MHz and
virtually
> DC. So you can set up some routine in code that produces your waveform
or
> dividers or whatever, and then feed a basic squarewave VCO into the
chip to
> clock it. That way, you avoid the aliasing, you get to add CV control
of the
> rate, etcetc. This would be great for staircase waveforms and such
like.
> Since power consumption is related to uP clock speed, it should use
next to
> no juice too.
> 
> Just a thought. I've never tried it, but it's always seemed like a
solution
> looking for a problem.

Right on, brother thinker!  Mulling this over in my head for years.  The
right microcontroller *should* lends itself well to a top octave divider
and a single chip solution (replacement MK50240).  I have some of old 20
MHz 16F series PICs which I simulated that I planned to use for that
purpose.  The best I could get was sub 200 Hz outputs for 20 MHz in.
It's proof the concept is viable but the part wasn't.

JJS