Electronics ⇝ Curtis Electromusic Specialties (CEM) Synthesizer Chips

CEM was founded by Doug R. Curtis.

These are some of the integrated cicruits created by CEM:

• CEM3310 ENV ADSR
• CEM3312 ADSR + VCA
• CEM3318 ADSR but microprocessor controlled
• CEM3320 24dB/Oct. Multi-Filter
• CEM3328 Same as CEM3320 but LPF only
• CEM3330 exp/lin VCA
• CEM3335 exp VCA
• CEM3340 VCO (Saw, Triangle, Pulse)
• CEM3345 VCO (Saw, Triangle, Pulse) with comparator
• CEM3350 Dual 12dB/octave Multimode Filter (no notch)
• CEM3360 Dual VCA
• CEM3365 DAC
• CEM3371 Dual Envelope
• CEM3372 24dB/oct. Filter, Mix, VCA
• CEM3374 Dual VCO (PWMable Pulse, Triangle, Saw)
• CEM3378 24dB/octave Filter, Mix, VCA but microprocessor controlled
• CEM3379 24dB/octave Filter, Pan, VCA but microprocessor controlled
• CEM3381 Dual VCA linear
• CEM3382 Dual VCA logarithmic
• CEM3385 24dB/octave Filter (low-fidelity)
• CEM3387 signal processor 3-4 pole cascade Filter, VC Pan/VCA
• CEM3389 signal processor 4 pole Filter, VC resonance, VC Pan/VCA
• CEM3391 Microprocessor Controllable: VCF, VCA, Envelope (ADSR)
• CEM3394 Microprocessor Controllable: 1 Synth Voice: VCF, VCA, Envelope (ADSR), VCMix
• CEM3396 Microprocessor Controllable: Wave-Shaper x2 - VCF, VCA