opendawn/mixer-gain-node

altnode.MixerGainNode

Installation

npm install -S altnode.mixer-gain-node

API

AudioNode

• constructor(audioContext: AudioContext, numberOfInputs = 2)

Instance attributes

• context: AudioContext

Instance methods

Also implements methods from the interface altnode.AudioNode.

• getChannelGain(channel: number): AudioParam

Example

import MixerGainNode from "altnode.mixer-gain-node";

let audioContext = new AudioContext();
let oscillator1 = audioContext.createOscillator();
let oscillator2 = audioContext.createOscillator();
let oscillator3 = audioContext.createOscillator();
let mixer = new MixerGainNode(audioContext, 3);
let t0 = audioContext.currentTime;
let t1 = t0 + 5;

oscillator1.frequency.value = 440;
oscillator1.start(t0);
oscillator1.stop(t1);
oscillator1.connect(mixer, 0, 0);

oscillator2.frequency.value = 660;
oscillator2.start(t0);
oscillator2.stop(t1);
oscillator1.connect(mixer, 0, 1);

oscillator3.frequency.value = 880;
oscillator3.start(t0);
oscillator3.stop(t1);
oscillator1.connect(mixer, 0, 2);

mixer.getChannelGain(0).value = 0.1;
mixer.getChannelGain(1).value = 0.2;
mixer.getChannelGain(2).setValueAtTime(0, t0);
mixer.getChannelGain(2).linearRampToValueAtTime(0.5, t1);

mixer.connect(audioContext.destination);

LICENSE

MIT