Undosa: Waveform Generation for I2S

Undosa is a Rust library that provides waveform synthesis for no_std environments meant for eventual ouput over I2S.

Example: Playing an A440 Sawtooth note with ADSR Filter

let generator = SawtoothWaveGenerator::new(44800, 440)
    .quantize(tempo, note_duration, detachment)
    .envelope(attack, decay, sustain, release);

let sample_0: i16 = generator.next().unwrap();

Working Sample Note

Setup:

• STM32F4 Discovery Board
• PCM5102 I2S Board
• 48K Sample Rate, 16 bit audio