skills/plugins/library-navigator/skills/sp-audio-fx-plugin-phaser/SKILL.md

name, description

name	description
sp-audio-fx-plugin-phaser	Phaser FX plugin — allpass filter cascade with LFO modulation for sweeping notches. Rate, depth, stages, feedback, mix. Part of audio-fx-plugin-* family.

sp-audio-fx-plugin-phaser

Symbol	Kind	Responsibility
PhaserPlugin	Class	Phaser FX plugin extending AbstractAudioFxPlugin
PhaserPluginOptions	Type	Rate, depth, stages, feedback, center frequency, mix
PhaserPluginOptionsSchema	Schema	Zod schema for options validation
PhaserPresetDataSchema	Schema	Zod schema for serialisable preset

File Structure: packages/media/audio-fx/audio-fx-plugin-phaser/src/{phaser,schemas}/

Sibling packages:

• @suaveplan/audio-fx-plugin-base — FX plugin foundation
• @suaveplan/audio-fx-plugin-flanger — flanger plugin (similar modulated delay)

Patterns:

Quick Start:

import { PhaserPlugin } from "@suaveplan/audio-fx-plugin-phaser";
const phaser = new PhaserPlugin({ rate: 0.4, depth: 0.6, stages: 6, feedback: 0.5, mix: 0.4 });

Constraints:

• Extends AbstractAudioFxPlugin from @suaveplan/audio-fx-plugin-base
• Cascade of allpass filters creates frequency notches
• LFO modulates center frequency of allpass chain
• More stages = more notches = richer effect
• Feedback routes output back to input for resonance
• Rate syncs to transport BPM when sync: true
• Mix control for dry/wet blend
• Preset schema validates all parameters

Checklist:

• PhaserPlugin extends AbstractAudioFxPlugin
• Allpass cascade creates frequency notches
• LFO sweeps notches through the spectrum
• Feedback increases resonance at notch frequencies
• More stages produce more notches