Audio node
Shepard Synth
The endless rise — a Shepard–Risset glissando. Six octave-spaced sines slide forever under a bell, so the pitch climbs without ever arriving. Cycle is the seconds each sine takes through all the octaves; Direction +1 rises, −1 falls, in between it slows to a stand; Base is the lowest note, Centre and Width (octaves) where the bell sits. Level fades in and out over Fade seconds — cable any data that should feel like tension. Notes (optional): the lowest held note becomes Base. Add inside an Audio Modular System.
Inputs
| Port | Type | Default |
|---|---|---|
| Enable | bool | true |
| NotesOptional. The lowest held note becomes Base. | float | — |
| LevelLoudness, 0–8; 1 = Terremoti's full rise. It follows over Fade seconds, so it never jumps. | float | 1 |
| CycleSeconds each sine takes to travel through all the octaves (0.5–3600). Terremoti: 58. | float | 58 |
| Direction+1 rises, −1 falls; values between slow it, 0 stands still. | float | 1 |
| BaseMIDI note of the lowest octave (Terremoti 24 = C1). | float | 24 |
| OctavesHow many octave-spaced sines, 2–8. | int | 6 |
| CentreOctaves above Base where the bell is loudest (Terremoti 3). | float | 3 |
| WidthWidth of the bell in octaves (Terremoti 1.7). Narrow: a clear tone; wide: a glassy chord. | float | 1.7 |
| FadeSeconds Level takes to follow (Terremoti 9). | float | 9 |
Outputs
| Port | Type |
|---|---|
| NotesOptional. The lowest held note becomes Base. | float |
Open Shepard Synth in the interactive catalog →
Shepard Synth is one of 381 nodes in Grafit Pro.
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