@audio/denoise-dereverb

De-reverb — late-reverb spectral subtraction (Lebart, Boucher & Denbigh 2001)

npm install @audio/denoise-dereverb

import dereverb from '@audio/denoise-dereverb'

Late-reverb suppression (Lebart, Boucher & Denbigh 2001 estimate, Habets-class gain). Models the late tail as a decaying sum of past frames' power, then applies a decision-directed Wiener gain on the signal-to-reverb ratio — the cross-frame smoothing suppresses the musical noise hard subtraction produces.

dereverb(data, { t60: 0.6, predelay: 0.04 })

| Param | Default | | |---|---|---| | t60 | 0.5 | Assumed reverberation time (s) | | predelay | 0.04 | Direct-sound passthrough (s) | | alpha | 1.5 | Reverb-PSD over-estimation factor | | alphaDD | 0.98 | Decision-directed SIR smoothing | | gMin | 0.05 | Gain floor for reverb-dominated bins |

Use when: moderate room reverb (RT60 ≤ 1 s) on a single channel. Not for: heavy reverb or convolutive distortion — use multi-channel WPE (out of scope).

Part of @audio/denoise — the denoise family umbrella. This README is generated from the umbrella docs.

MIT © audiojs