[sdiy] CEM IC for DIGISOUND 80.. or ?

[-- Stefano --]

Hi,

I'm a beginner in DIY-Synth and I'd like to build my first Modular Analogue 
System.
Untill now I've build several effects for guitar (phasers, ring modulator, 
fuzzes, distortion-tube preamps) and I'm finishing the Mini Sound Lab (by 
MusicFromOuterSpaces).

My next step would be to build a DIGISOUND 80 (starting from implementing 
the main modules(VCOs,VCAs,VCFs)) because this is the only well-document DIY 
project I have found on the Internet. Unfortunately, In DIGISOUND 80 there 
is a wide use of the CEM IC technology that I found very expensive.
Roughly, I'd have two question..

1) do you know a well documented project on Internet (PCBs, Layout, parts 
list,etc...) different from DIGISOUND 80 ?

2) do you know a cheap source for the CEM IC (see below)?

Bye
Stefano
______________________________________________
PS.: here is is the complete chip set list:

CEM 3310 VC Envelope Generator
CEM 3312 VC Envelope Generator
CEM 3320 Voltage Controlled Filter
CEM 3328 4 Pole Low-Pass VCF
CEM 3330 Dual Voltage Controlled Amplifier (VCA)
CEM 3340 Voltage Controlled Oscillator
CEM 3350 Dual VC State Variable Filter
CEM 3360 Dual VCA
CEM 3371 uP Controlled Waveform Generator
CEM 3372 uP Controlled Signal Processor
CEM 3374 Dual VCO
CEM 3391 uP Controlled Dynamic Signal Processor
CEM 3396 uP Controlled Waveshaper/Filter
CEM 3381/3382/PDA381/PDA382 Dual Voltage Controlled Amplifier.The CEM 3381 
is now called the PDA381
PD508/CEM5508 Octal Sample & Hold
CEM5530 30ch Sample & Hold
CEM 3365 Dual DAC Multiplier
CEM 3378/3379 Voltage Controlled Signal Processor
CEM 3389 Signal Processor

_________________________________________________________________
Chiama gratis con Windows Live Messenger  
http://imagine-msn.com/messenger/launch80/?locale=it-it&TAB=2