[sdiy] Pitched Noise/VCO Bank Schematic Posted

[john mahoney]

Scott,
LOL! I read your post this morning; fortunately, I saw the "Bissell!"
comment when I was between sips of coffee. :-)

The recordings of this VCO in action are cool (creepy1b.mp3 and
gongcomp.mp3). Nice work.

> I'd be interested to know if there were
> some economical/expedient way to smooth
> out the square waves.

Capacitors! Is that cheap enough? ;-) Perhaps you need something just a tad
more sophisticated.

You might talk to Scott Gravenhorst (I CCed him on this) about using the
4046 Phase Locked Loop chip, but that technique may be more suited to LFOs
than audio frequency VCOs. But, it may be more trouble to smooth the squares
than to start over with (for example) sawtooth VCOs.

Wish I had something more useful to add.
--
john