synth

A polyphonic Synth type whose multiple oscillators generate sound via amplitude and frequency envelopes.

Features

• Sine, Saw, Square, Noise and NoiseWalk waveforms.
• Amplitude and frequency envelopes with an unlimited number of points.
• Unlimited number of oscillators (each can have unique waveforms and amplitude and frequency envelopes).
• Polyphonic (unlimited number of voices).
• Warbliness builder method that uses gaussian noise to model the "warped-old-hardware-synth" sound.
• Trigger playback at any time by passing the synth notes synth.play_note((duration_in_ms, pitch_in_hz)). Synth will automatically find an idle Voice to use (or retrigger the oldest one).
• Uses sound_stream and its Sample trait and in turn is generic over any bit-depth or sample format.

Rust for event in stream.by_ref() { match event { Event::Out(buffer) => synth.audio_requested(buffer, SETTINGS), .. } }

See an example here.

PortAudio

synth uses PortAudio as a cross-platform audio backend. The rust-portaudio dependency will first try to find an already installed version on your system before trying to download it and build PortAudio itself.

License

MIT - Same license as PortAudio.