Pitch-tracking synthesizer — macOS — AU / VST3 / CLAP
Play a synthesizer with your own sound.
Contour listens to your voice or horn and tracks the shape of the performance — pitch, breath, articulation, vibrato. No MIDI. No quantizing. A synth voice that moves the way you do.
The signal path
A neural pitch tracker and a DSP refinement stage read the input at 125 frames per second. Envelope, transient, brightness, noisiness, and vibrato ride along as continuous controls. A subtractive synth renders the result, live.
| Algorithmic latency | ~24 ms |
| Control rate | 125 Hz |
| Pitch precision | Sub-cent |
| Formats | AU · VST3 · CLAP — macOS universal |
The instrument
One window: the synth panel that shapes the sound, and the pitch trace and spectrogram that show what the tracker is hearing.

Before / after
Sax solo — Warm Blend
Listen for the phrase's vibrato and swells carrying straight into the synth's pitch and volume.