@audio/sinusoidal-residual

Residual noise layer

npm install @audio/sinusoidal-residual

import residual from '@audio/sinusoidal-residual'

The noise layer of the sinusoids+noise model (Serra-Smith SMS): input minus the additive resynthesis of its tracked partials. Phase-blind subtraction is imperfect per partial, so it works spectrally — per frame, subtract each tracked partial's estimated magnitude (Wiener-style soft mask, spread over the Hann mainlobe) from the input magnitude, then resynthesize with the input's own phase. Robust without tracking original phase. Runs sinusoidal-track internally unless a model is passed in.

residual(data, { frameSize: 2048 })          // tracks internally
residual(data, { model })                    // reuse an existing analysis

| Param | Default | | |---|---|---| | data | — | Mono PCM (positional) | | model | — | Reuse an existing sinusoidal-track model instead of re-tracking | | (others) | — | Forwarded to sinusoidal-track when no model is given |

Returns a Float32Array the same length as data.

Use when: extracting the noise/transient component for SMS-style decomposition — pairs with sinusoidal-synth (the sinusoidal component) to reconstruct the full signal.

Part of @audio/sinusoidal — the sinusoidal family umbrella.

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