web-audio-effcts

A simple delay/equalizer/filter/reverb effect module for the Web Audio API.

Installation

npm install @shyrii/web-audio-effects

Example Usage

import { Delay } from '@shyrii/web-audio-effects';
var context = new webkitAudioContext()
  , osc = context.createOscillator()
  , delay = new Delay(context, {
    type: 0,
    delay: 1.0,
    feedback: 0.42,
    offset: -0.1,
    cutoff: 800,
    dry: 1
  });
osc.connect(delay.input);
delay.connect(context.destination);
osc.start(0);

Delay(context, options)

Instantiate a Delay effect module. Expects an AudioContext as the first parameter.

options

• type (0: normal, 1: inverted, 2: ping pong)
• delay (float: 0-10)
• feedback (float: 0-1)
• cutoff (float: 0-22050)
• offset (float: -0.5-0.5)
• dry (float: 0-1)

Filter(context, options)

Instantiate a Filter effect module. Expects an AudioContext as the first parameter.

options

• type (string: 'lowpass'/'highpass')
• frequency (float: 0-22050)
• quality (float: 0.0001-1000)
• gain (float: -40-40)
• wet (float: 0-1)
• dry (float: 0-1)

Reverb(context, options)

Instantiate a Reverb effect module. Expects an AudioContext as the first parameter.

options

• seconds (float: 1-50)
• decay (float: 0-100)
• delay (float: 0-100)
• reverse (boolean)

Equalizer(context, options)

Instantiate a Equalizer effect module. Expects an AudioContext as the first parameter.

options

• low (float: 0-1)
• mid (float: 0-1)
• high (float: 0-1)

Tremolo(context, options)

Instantiate a Tremolo effect module. Expects an AudioContext as the first parameter.

options

• speed (float: 0-20)
• depth (float: 0-10)

Compressor(context, options)

Instantiate a Compressor effect module. Expects an AudioContext as the first parameter.

options

• attack (float: 0-1)
• release (float: 0-1)
• ratio (float: 1-20)
• threshold (float: -100-0)
• gain (float: 0-1)