Audio node
Binaural Shift
A precise full-spectrum frequency shifter (single-sideband via a Hilbert pair): every frequency moves by the SAME fixed Hz, so the offset between the ears stays one constant beat across all harmonics -- which a pitch shifter cannot do. Presets cover the classic beat bands (Delta through Gamma, Schumann 7.83), Custom opens exact frequencies, and Morph glides between Freq A and B -- cable a slow LFO and the beat itself breathes. Direction shifts the right ear, the left, or splits ±f/2. A creative experimental audio tool.
Inputs
| Port | Type | Default |
|---|---|---|
| AudioThe audio to shift. Any engine source works — Audio Player, Audio Modular System, another effect, or a microphone. | structure | — |
| EnableOff passes the audio through untouched. | bool | true |
| Preset AThe first beat frequency, from the classic bands (Delta through Gamma, plus Schumann 7.83 Hz). Choose Custom to type an exact value in Freq A. | int | schumann |
| Freq AExact shift for A, in Hz, used only when Preset A is Custom. Clamped to ±100 Hz; a few Hz is where the beat is felt, tens of Hz reads as detuning. | float | 7.83 |
| Preset BThe second beat frequency — Morph glides from A to B. | int | theta4_5 |
| Freq BExact shift for B, in Hz, used only when Preset B is Custom. Clamped to ±100 Hz. | float | 4.5 |
| MorphGlides between frequency A and B. Clamped to 0…1; cable a slow LFO here and the beat itself breathes. | float | 0 |
| DirectionWhich ear moves: Split shifts each ear half the amount in opposite directions, Right or Left shifts only that side. | int | 0 |
| MixBlend between the untouched signal and the shifted one. Clamped to 0…1. | float | 1 |
Outputs
| Port | Type |
|---|---|
| AudioThe audio to shift. Any engine source works — Audio Player, Audio Modular System, another effect, or a microphone. | structure |
| Level | float |
| Beat Freq | float |
How It Works
Binaural Shift is a true single-sideband frequency shifter built on a Hilbert pair: every frequency moves by the SAME fixed number of Hz, unlike a pitch shifter which multiplies. Shift the left ear one way and the right the other and the offset between the ears is constant across the whole spectrum — a real binaural beat, from any material, including a mono microphone (the node creates the stereo pair itself).
Twelve brainwave presets (Delta 1.5 through Gamma 60, plus Schumann 7.83) and Custom, with an A → B Morph, Split / Right / Left direction and a dry/wet Mix.
Use Cases
- Binaural sessions — a measured beat frequency over music instead of test tones.
- Stereo widening — small shifts (a fraction of a Hz) make a mono source breathe.
- Sound design — large shifts are inharmonic and metallic, unlike pitch shifting.
Tips
- It works after ANY source — player, microphone, or the Modular System.
- The Beat Freq output reports the effective difference between the ears; use it to label what the listener is actually getting.
- It honours every engine block size (64–65536), so it is safe at low-latency settings.
Open Binaural Shift in the interactive catalog →
Binaural Shift is one of 381 nodes in Grafit Pro.
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