cDVCA

World first Class-D VCA (Black Panel)

cDVCA or class-D VCA is a new kind of VCA based on an entirely novel concept that is inspired from class-D amplification technology.

Concept: The input signal is turned into an ultrasonic PWM signal. The PWM is scaled to the desired amplitude and then filtered back down to the original signal.

The twist: The PWM frequency can be lowered down into the audio spectrum and the frequency can be controlled via its 1V/oct input allowing for crazy waveshaping that tracks your melodies.

The first VCA that tracks 1V/oct

The drive controls an innovative clipping method that does not rely on overdriving any circuitry and therefore results in distortions with a very defined character.

The signal then goes into a 1 pole VCF/tone circuit that allows to keep things under some amount of control as the harmonics produced by this module can be aggressive.

With no input, the module generates a simple square wave and therefore can be used a simple synth voice (VCO->VCA-VCF)

https://atovproject.de/products/cdvca