Arduino MIDI Sound Module

Turn your Arduino Uno into a 16-voice wavetable synthesizer/MIDI sound generator.

General MIDI Subset

Implements the most commonly used features of the General MIDI 1.0 standard, including:

• 128 standard instruments
• 45 percussion instruments
• 16 note polyphony with key velocity
• Note on/off, program change, pitch bend, channel volume, all notes and all sounds off.

Demo

Synth Engine

• 16 voices sampled & mixed in real-time at ~20kHz
• Wavetable and white noise sources
• Amplitude, frequency, and wavetable offset modulated by envelope generators
• Additional volume control per voice (used for channel volume and key velocity)
• Documented C++ code builds in Arduino IDE or Atmel Studio 6.0

Hardware

Useful Tools

• Hairless MIDI - Use default settings and #define USE_HAIRLESS_MIDI
• The Kik Gen Labs - USBMidiKlik - Do not #define USE_HAIRLESS_MIDI
• loopMIDI

Resources

• Open Music Labs - PWM DAC
• Open Music Labs - Dual PWM Circuits