@audio/tilt
Status calibrated
npm1.2.3licenseMIT
Tilt EQ — see-saw around a pivot frequency
One-knob see-saw tilt EQ
import tilt from '@audio/eq-tilt'
One knob, one pivot frequency: a low-shelf at pivot boosted by gain and a high-shelf at pivot cut by the same gain (both fixed Q 0.5), cascaded. The two shelves meet near-flat at pivot and diverge oppositely on either side — positive gain tilts bass up / treble down, negative does the opposite. Mastering-bus "warmer"/"brighter" macro; broadcast tilt EQ.
let params = { gain: 2, pivot: 1000, fs: 44100 }
for (let buf of stream) tilt(buf, params)
| Param | Default | |
|---|---|---|
gain |
0 |
Tilt amount, dB — positive tilts bass up / treble down, negative the opposite |
pivot |
1000 |
Pivot frequency, Hz — the point the tilt see-saws around |
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 gain/pivot/fs change, so state carries across block boundaries automatically.
Use when: one-knob mastering-bus balance — a single control that trades bass for treble without a multi-band EQ; broadcast/mastering tilt.
Part of @audio/eq — the eq family umbrella.
MIT © audiojs