@audio/denoise-omlsa

OM-LSA — Optimally Modified Log-Spectral Amplitude (Cohen 2002), with IMCRA noise

npm install @audio/denoise-omlsa

import omlsa from '@audio/denoise-omlsa'

Optimally-Modified Log-Spectral Amplitude estimator (Cohen 2002) driven by IMCRA noise tracking. Combines an LSA gain with a minimum-gain floor weighted by speech presence probability: G = G_LSA^p · G_min^(1-p).

omlsa(data)
omlsa(data, { gMinDb: -25 })                                   // less aggressive floor

| Param | Default | | |---|---|---| | gMinDb | -20 | dB floor for non-speech bins (alias of gMin) | | alpha | 0.92 | Decision-directed smoothing (alias of alphaDD) | | frameSize | 2048 | | | hopSize | frameSize/4 | |

Use when: speech in non-stationary noise (street, café, car); generally the highest-quality choice for noisy speech.

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

MIT © audiojs