Johan Bilén (forum user johanbilen) posted about his C1 Chameleon Project – a monophonic subtractive synthesizer.
It’s based around a Teensy 3.2 and an Audio Adaptor. The synth is controlled by two illuminated rotary encoders and data is displayed on a 0.96″ OLED.
This nifty little synthesizer has three oscillators with six waveforms, white noise generator, glide, resonant low-, band- and highpass filter, a mixer section, four LFO’s and four envelope generators and 100 preprogrammed presets. Each section (pitch, pulsewidth, filter frequency and amplifier) can be modulated by an envelope or an LFO.