synth

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

Features

• Sine, Saw, SawExp, 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).
• Monophonic and Polyphonic modes (unlimited number of voices).
• Simple note_on(pitch_in_hz, velocity) and note_off(pitch_in_hz) methods.
• Per-channel amplitude and a stereo panning helper method.
• "Stereo spread" for automatically spreading multiple voices evenly across the stereo image.
• Per-voice portamento.
• Per-voice detuning.
• Multi-voice (unison) support in Mono mode.
• Legato and Retrigger Mono modes.
• Warbliness Oscillator builder method that uses gaussian noise to model the "warped-old-hardware-synth" sound.

synth.fill_slice(frame_slice, sample_hz),

See an example here.