@audio/denoise-dehum

Mains hum / tonal noise removal via cascaded high-Q biquad notches

npm install @audio/denoise-dehum

import dehum from '@audio/denoise-dehum'

Cascade of high-Q biquad notches at the fundamental + harmonics.

dehum(data, { freq: 60, harmonics: 4 })
dehum(data, { freq: 50, adaptive: true, drift: 0.5 })          // tracks slow mains drift

| Param | Default | | |---|---|---| | freq | 50 | Fundamental (Hz) | | harmonics | 4 | Number of notches placed | | Q | 30 | Notch sharpness — higher = narrower | | adaptive | false | Goertzel sweep refines freq ± drift Hz |

Use when: mains buzz, ground-loop hum, fixed tonal interference. Not for: broadband noise (use wiener/omlsa); shifting tones (use spectral methods).

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

MIT © audiojs