Eurorack Control Voltage (CV) Signals from synthio #AdafruitPlayground #FeaturedNote @Adafruit
This note describes the process of searching for a way to output Eurorack CV (control voltage) signals from synthio via the I2S DAC using an audiobusio connection on a UM FeatherS2.
Problem Statement: When using a CV-like object in synthio such as Envelope and LFO to control a Note’s amplitude, the resultant output is placed above the baseline voltage and only responds to positive control values. For example, a sine-wave LFO created to span negative and positive values to modulate a note’s frequency is rectified if used to modulate a note’s amplitude. This becomes important when an analog output of just the Envelope or LFO is needed rather than the modulated sound of the Note oscillator.
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Adafruit Playground is a wonderful place to share what you find interesting. Have a cool project you are working on? Have a bit of code that you think others will find useful? Want to show off your electronics workbench? You have come to the right place.