@audio/eq-graphic

ISO 266 10-band graphic equalizer

npm install @audio/eq-graphic

import graphicEq from '@audio/eq-graphic'

Fixed 10-band graphic EQ at the ISO 266 / IEC 61260 1/1-octave nominal center frequencies — 31.5, 63, 125, 250, 500, 1000, 2000, 4000, 8000, 16000 Hz. One RBJ peaking biquad per non-zero band (Q 1.4), cascaded low-to-high; bands left at 0 dB build no filter section, so an all-flat EQ costs nothing.

let params = { gains: { 1000: 6, 8000: -3 }, fs: 44100 }
for (let buf of stream) graphicEq(buf, params)

| Param | Default | | |---|---|---| | gains | {} | Per-band gain in dB, keyed by center frequency (e.g. 1000) or its rounded form | | fs | 44100 | Sample rate, Hz |

Pass the same params object across successive calls — the filter cascade is cached on it and only rebuilt when gains/fs change by value, so state carries across block boundaries automatically.

Use when: the classic mixing-console/PA slider EQ — fixed bands, familiar layout, quick broad-strokes shaping.

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

MIT © audiojs