Audio node
Aura Synth
Modal-resonator instrument -- bells, bowls, marimbas, bowed glass. Add inside an Audio Modular System.
Inputs
| Port | Type | Default |
|---|---|---|
| EnableTurns this synth off without removing it. Off silences new notes; voices already ringing fade out naturally. | bool | true |
| NotesThe note stream that plays this synth (128 bins, one per MIDI note, value = velocity). Cable it from Pulse, a MIDI Receiver, Points to Notes or Hands to Notes. | float | — |
| PresetWhich resonant material the voices are made of — bells, bowls, marimbas, bowed glass. Values outside the preset list fall back to the first material. | int | 0 |
| LevelOutput volume of this synth. Clamped to 0…1.5 — above 1 it drives the tone into the warm limiter rather than getting louder. | float | 0.8 |
| PitchTransposes everything this synth plays, in semitones. Any value works; past about ±48 the resonators leave the musically useful range. | float | 0 |
| DecayHow long each struck note rings. Clamped to 0…1, where 0 is a dry tap and 1 is a long bell tail. | float | 0.5 |
| BrightnessTilts energy toward the higher partials — dull and wooden at 0, glassy at 1. Clamped to 0…1. | float | 0.5 |
| BodyBlends in a sine body under the resonators, filling out the fundamental. Clamped to 0…1. | float | 0.2 |
| WarmthSaturation: gentle analog-style thickening that turns to soft distortion near 1. Clamped to 0…1. | float | 0.15 |
| AnalogHow imperfect each strike is — tuning scatter, pitch drift and a living tail. 0 is machine-exact, 1 is loose and organic. Clamped to 0…1. | float | 0.3 |
| Pan SpreadHow far notes spread across the stereo field by pitch. 0 is centred mono, 1 is fully wide. Clamped to 0…1. | float | 0.4 |
| Vel BrightHow much harder playing also plays brighter. 0 keeps the tone constant, 1 makes velocity open the timbre. Clamped to 0…1. | float | 0.5 |
| Max VoicesHow many notes this synth may sound at once. Clamped to 1…8; 0 is treated as 1 (use Enable to silence). Lowering it thins a chord that is already ringing. | int | 6 |
Outputs
| Port | Type |
|---|---|
| NotesThe note stream that plays this synth (128 bins, one per MIDI note, value = velocity). Cable it from Pulse, a MIDI Receiver, Points to Notes or Hands to Notes. | float |
How It Works
Aura Synth is a modal-resonator instrument: up to twelve tuned partials per voice, struck or bowed, with an FM body and tanh warmth. Twenty-four materials cover glass bell, tibetan bowl, gamelan gong, hang drum, kalimba, singing bowl, electric piano and deep bass, among others — each material is a measured set of partial ratios, decays and amplitudes, not a sample.
Analog adds the physical imperfection: per-strike scatter, pitch drift, a living tail and even-harmonic grit.
Use Cases
- Tuned percussion — bells, bowls and marimbas that ring properly.
- Pads with a body — bowed mode with long decay.
- The Composer's instrument — set Composer to Listen and let it write the part.
Tips
- Decay and Brightness reshape a material far more than switching materials does.
- Pan Spread places voices across the stereo field, which makes chords legible.
- Add it inside an Audio Modular System — it is a child node, not a standalone generator.
Open Aura Synth in the interactive catalog →
Aura Synth is one of 381 nodes in Grafit Pro.
Free download. Every feature for 7 days, no card. Then €99.99 once — or keep playing your projects as a Player.