PEAKS

Github - BOM

Features

Four in one...

ADSR envelope generator

• Segment durations ranging from 0.2ms to 8s.
• Quartic attack, exponential decay, exponential release.

LFO and tap-tempo LFO

• 0.03 Hz to 160 Hz.
• 5 basic waveforms: square, triangle, sine, stepped, random.
• Waveform variations and morphing for each of these: PWM, slope, folding/harmonics, step size, interpolation.
• Phase at reset control.
• Tap LFO can lock onto irregular rhythms.

Drum synth

• Channel 1: 808 kick model with extra parameters (tune, punch).
• Channel 2: 808 snare model with extra parameters (tune, decay).
• Channel 2: A specific combination of settings transform the snare into a modelled 808 hi-hat.

Control modes

• Twin: Channel 1&2 share the same parameters but can be triggered independently.
• Split: Channel 1 is edited by knobs 1&2, channel 2 edited by knobs 3&4, with a simplified 2-parameter control scheme.
• Expert: Channel 1&2 are completely independent.

Specifications

• Inputs: 100k impedance, threshold at 0.6V.
• 16-bit CV/audio generation with 48kHz sample rate.
• Output level: 0 to +8V for envelopes, 10Vpp for LFOs and drum signals.

Code (AVR projects): GPL3.0.

Code (STM32F projects): MIT license.

Hardware: cc-by-sa-3.0

By: Emilie Gillet (emilie.o.gillet@gmail.com)