Computer Music

#10 Voltage-controlled amplifiers Pt 2

In our previous instalment, we took you through the most common uses of the humble voltage controlled oscillator, better known as the ‘VCA’. We discussed its rather pedestrian role as a volume control at the end of any synthesiser’s signal path.

We described how a VCA might be used as an intermediary between a modulation source and its target, allowing you to adjust and manipulate the amount of voltage being shuttled from one module to another. Admittedly, our examples were rather obvious. We patched in an envelope generator to shape our sound’s volume over

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