diff --git a/docs/api/audio/PositionalAudio.html b/docs/api/audio/PositionalAudio.html
index cf6a0d4578f863709e35942e5c8b14ee0808e5dd..7d6fcbb461835346a05faa985005467c584fd52e 100644
--- a/docs/api/audio/PositionalAudio.html
+++ b/docs/api/audio/PositionalAudio.html
@@ -88,7 +88,7 @@
 		Returns the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/refDistance panner.refDistance].
 		</p>
 
-		<h3>[method:PositionalAudio setRefDistance]( [param:Number value] )</h3>
+		<h3>[method:PositionalAudio setRefDistance]( [param:Float value] )</h3>
 		<p>
 		Sets the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/refDistance panner.refDistance].
 		</p>
@@ -98,7 +98,7 @@
 		Returns the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/rolloffFactor panner.rolloffFactor].
 		</p>
 
-		<h3>[method:PositionalAudio setRolloffFactor]( [param:Number value] )</h3>
+		<h3>[method:PositionalAudio setRolloffFactor]( [param:Float value] )</h3>
 		<p>
 		Sets the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/rolloffFactor panner.rolloffFactor].
 		</p>
@@ -118,11 +118,16 @@
 		Returns the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/maxDistance panner.maxDistance].
 		</p>
 
-		<h3>[method:PositionalAudio setMaxDistance]( [param:Number value] )</h3>
+		<h3>[method:PositionalAudio setMaxDistance]( [param:Float value] )</h3>
 		<p>
 		Sets the value of [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode/maxDistance panner.maxDistance].
 		</p>
 
+		<h3>[method:PositionalAudio setDirectionalCone]( [param:Float coneInnerAngle], [param:Float coneOuterAngle], [param:Float coneOuterGain] )</h3>
+		<p>
+		This method can be used in order to transform an omnidirectional sound into a [link:https://developer.mozilla.org/en-US/docs/Web/API/PannerNode directional sound].
+		</p>
+
 		<h2>Source</h2>
 
 		[link:https://github.com/mrdoob/three.js/blob/master/src/[path].js src/[path].js]
diff --git a/examples/webaudio_orientation.html b/examples/webaudio_orientation.html
index 8b3c14ffa52b73d330e742bfbbb23aa13b77ac98..de7426104eb0cfca8c1358c20bb64e68982618e2 100644
--- a/examples/webaudio_orientation.html
+++ b/examples/webaudio_orientation.html
@@ -158,12 +158,7 @@
 		var positionalAudio = new THREE.PositionalAudio( listener );
 		positionalAudio.setMediaElementSource( audioElement );
 		positionalAudio.setRefDistance( 1 );
-
-		// configure directionality cone, see https://developer.mozilla.org/en-US/docs/Web/API/PannerNode
-
-		positionalAudio.panner.coneInnerAngle = 210;
-		positionalAudio.panner.coneOuterAngle = 230;
-		positionalAudio.panner.coneOuterGain = 0.1;
+		positionalAudio.setDirectionalCone( 210, 230, 0.1 );
 
 		//
 
diff --git a/src/audio/PositionalAudio.js b/src/audio/PositionalAudio.js
index 21b721f9e2d09a9c7e4877fa1cbe866acc603b20..c37c75fc2a900b569931c2725575887fc2445deb 100644
--- a/src/audio/PositionalAudio.js
+++ b/src/audio/PositionalAudio.js
@@ -82,6 +82,16 @@ PositionalAudio.prototype = Object.assign( Object.create( Audio.prototype ), {
 
 	},
 
+	setDirectionalCone: function ( coneInnerAngle, coneOuterAngle, coneOuterGain ) {
+
+		this.panner.coneInnerAngle = coneInnerAngle;
+		this.panner.coneOuterAngle = coneOuterAngle;
+		this.panner.coneOuterGain = coneOuterGain;
+
+		return this;
+
+	},
+
 	updateMatrixWorld: ( function () {
 
 		var position = new Vector3();