ODP: diy GM synth

[Roman Sowa]

I did it

It is actually one chip, or two chips if DAC counts.
(it is really 3 chips but 3rd one is only dac interface
not needed if Crystal dac used).
Don't remember part number, but will find out and let you know
tommorow, if anyone interested.
Sounds nod bad... as for a soundcard. 2 megs (?) of samples,
very metallic reverb, on most programs very noticeable
keyboard regions (where the sample filtering changes).
The piano sound is not bad, and it gets excellent when you look
at the it, and think "is it coming out from this little match box?"

And building it is a snap. Only few pins used, almost no extra
parts, 3.3V

if you care, there's a picture (no schematic):
http://www.multimania.com/romcio/midisynth.jpg
it has 3 sockets: 3.5mm out jack, power jack, midi in

Roman

> -----Oryginalna wiadomość-----
> Od:	Paul Perry [SMTP:pfperry at melbpc.org.au]
> Wysłano:	24 marca 1999 02:14
> Do:	synth-diy at mailhost.bpa.nl
> Temat:	diy GM synth
> 
> OK, I dont suppose many are wanting this, but i see 
> Popular Electronics March 99 has a 'build your own
> GM synth' with a couple of Crystal Semi chips.
> Could be the basis of something more exotic?????
> 
> like generating raw sounds thru it & mangling them to buggery
> with ringmods, ringmodding with other gm sounds, intermodulating
> the simultaneous output audio with itself, etc.
> 
> Very low parts count anyhow.
> 
> Anyone tried, anyone experienced with this or similar chips?
> 
> paul perry melbourne australia