@audio/amp-tube

Tube amp stage — highpass → oversampled tube saturation → bass/mid/treble tone stack → level

npm install @audio/amp-tube

import amp from '@audio/amp-tube'

A classical guitar-amp composition, not a circuit simulation (NAM-class capture lives at @audio/neural-amp): one-pole ~30 Hz input highpass (rumble/DC) → @audio/saturate-tube at drive = 1 + 7·gain (oversampled) → bass/mid/treble tone stack (RBJ low-shelf, peaking, high-shelf) → output level. Tone-stack stages only run when their gain is non-zero (bass/mid/treble at 0 are true no-ops, not near-unity filters).

amp(data, { fs: 44100, gain: 0.7 })
amp(data, { fs: 44100, gain: 0.6, bass: 3, treble: -6, level: 0.8 })

| Param | Default | | |---|---|---| | gain | 0.5 | 0..1 — drive into the tube stage (maps to drive = 1 + 7·gain) | | bass | 0 | dB — low-shelf at 120 Hz | | mid | 0 | dB — peaking at 650 Hz | | treble | 0 | dB — high-shelf at 3200 Hz | | level | 0.7 | output gain multiplier (linear, not dB) | | fs | 44100 | sample rate | | oversample | 4 | oversample factor passed through to the tube stage |

Mutates data in place and returns it (same array reference, not a copy). Mono only.

Use when: a guitar/bass amp-in-a-box stage — drive, tone-shape, and level in one call. Not for: speaker-cabinet coloration (pair with @audio/amp-cabinet) or bare saturation without the tone stack (use @audio/saturate-tube directly).

Part of the @audio/amp family.

MIT © audiojs