Oscillator Nodes

Main Types of Oscillator Nodes

Oscillator Nodes come in 4 different OscillatorType's

• sine: the default value, these are pure, single-frequency, sound waves
• triangle: made up of an infinite set of odd harmonic sine waves
• square: also made up of an infinite set of odd harmonic sine waves, with upper harmonic amplitudes higher than triangle waves.
• sawtooth: made up of an infinite set of harmonic sine waves waves.

As you go down the list, the different waves make progressively "buzzier" sounds as the waveforms become made up of more and more sound waves.

How to create an Oscillator Node

const audioContext = new (window.AudioContext || window.webkitAudioContext)();
const sinewave = audioContext.createOscillator();
sinewave.type = "sine";
sinewave.frequency.value = 440; // A4
sinewave.start();
// sinewave.stop();