Voltage Controlled ADSR Envelope Generator (VC ADSR 7B)

Posted by & filed under Envelope Generators, Projects, Synth DIY.

A CEM 3312 / SSM 2056 clone using cheap PIC microprocessors This page describes a cheap clone of the CEM 3312 and SSM 2056 voltage-controlled envelope generator chips. Both of these chips include voltage control of A, D, S and R, but both include other inputs too. The CEM 3312 chip has a input which controls the final envelope output level. This is very handy as a voltage-controlled “envelope depth” when feeding the envelope to a filter, for instance. The… Read more »

Voltage Controlled LFO (VCLFO 9D)

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This voltage-controlled LFO is based on the PIC 16F684, which is a pretty basic chip. Nonetheless, this LFO has more features than your average LFO. For a start, it can produce 7 basic waveforms, and also includes a noise source. It can also morph its waveforms under CV control, well beyond basic PWM. There is an optional sample-and-hold module that can sample whatever is selected, the current waveform or the noise source. The LFO frequency, waveform selection, waveform distortion, and… Read more »