// create an AudioListener and add it to the camera
const listener = new THREE.AudioListener();
camera.add( listener );
// create a global audio source
const sound = new THREE.Audio( listener );
// load a sound and set it as the Audio object's buffer
const audioLoader = new THREE.AudioLoader();
audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
sound.setBuffer( buffer );
sound.setLoop(true);
sound.setVolume(0.5);
sound.play();
});