@audio/baxandall
Status calibrated
npm1.2.3licenseMIT
Baxandall tone control — bass/treble shelving with reciprocal characteristics
import baxandall from '@audio/eq-baxandall'
The canonical two-knob tone control found in amplifiers, mixers, and guitar pedals — a low-shelf at fBass and a high-shelf at fTreble (both fixed Q 0.707), cascaded. Each shelf tracks its own frequency/gain/fs independently, so bass and treble move without disturbing each other.
let params = { bass: 3, treble: -2, fs: 44100 }
for (let buf of stream) baxandall(buf, params)
| Param | Default | |
|---|---|---|
bass |
0 |
Bass shelf gain, dB (positive boosts, negative cuts) |
treble |
0 |
Treble shelf gain, dB (positive boosts, negative cuts) |
fBass |
250 |
Bass shelf corner frequency, Hz |
fTreble |
4000 |
Treble shelf corner frequency, Hz |
fs |
44100 |
Sample rate, Hz |
Pass the same params object across successive calls — both shelves' coefficients and filter memory are cached on it and only rebuilt when their own gain/frequency/fs change, so state carries across block boundaries automatically.
Use when: a simple two-knob tone stack — mixer channel strip, guitar amp voicing, quick "warmer/brighter" macro control.
Part of @audio/eq — the eq family umbrella.
MIT © audiojs