diff -r 000000000000 -r 6474c204b198 dom/webidl/AudioListener.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/AudioListener.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,27 @@
+/* -*- Mode: IDL; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * The origin of this IDL file is
+ * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+interface AudioListener {
+
+    // same as OpenAL (default 1) 
+    attribute double dopplerFactor;
+
+    // in meters / second (default 343.3) 
+    attribute double speedOfSound;
+
+    // Uses a 3D cartesian coordinate system 
+    void setPosition(double x, double y, double z);
+    void setOrientation(double x, double y, double z, double xUp, double yUp, double zUp);
+    void setVelocity(double x, double y, double z);
+
+};
+