The [name] represents a virtual [link:https://developer.mozilla.org/de/docs/Web/API/AudioListener listener] of the all positional and non-positional audio effects in the scene.
			A three.js application usually creates a single instance of [name]. It is a mandatory construtor parameter for audios entities like [page:Audio Audio] and [page:PositionalAudio PositionalAudio].
			In most cases, the listener object is a child of the camera. So the 3D transformation of the camera represents the 3D transformation of the listener.
		
			[example:webaudio_sandbox webaudio / sandbox ]
			[example:webaudio_timing webaudio / timing ]
			[example:webaudio_visualizer webaudio / visualizer ]
		
		// create an AudioListener and add it to the camera
		var listener = new THREE.AudioListener();
		camera.add( listener );
		// create a global audio source
		var sound = new THREE.Audio( listener );
		// load a sound and set it as the Audio object's buffer
		var audioLoader = new THREE.AudioLoader();
		audioLoader.load( 'sounds/ambient.ogg', function( buffer ) {
			sound.setBuffer( buffer );
			sound.setLoop(true);
			sound.setVolume(0.5);
			sound.play();
		});
		
		Create a new AudioListener.
The [link:https://developer.mozilla.org/en-US/docs/Web/API/AudioContext AudioContext] of the [page:AudioListener listener] given in the constructor.
A [link:https://developer.mozilla.org/en-US/docs/Web/API/GainNode GainNode] created using [link:https://developer.mozilla.org/en-US/docs/Web/API/AudioContext/createGain AudioContext.createGain]().
Default is *null*.
Time delta value for audio entities. Use in context of [link:https://developer.mozilla.org/en-US/docs/Web/API/AudioParam/linearRampToValueAtTime AudioParam.linearRampToValueAtTimeDefault](). Default is *0*.
Return the [page:AudioListener.gain gainNode].
Set the [page:AudioListener.filter filter] property to *null*.
Returns the value of the [page:AudioListener.filter filter] property.
Set the [page:AudioListener.filter filter] property to *value*.
Return the volume.
Set the volume.
[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]