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diff --git a/dom/webidl/PannerNode.webidl b/dom/webidl/PannerNode.webidl
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+++ b/dom/webidl/PannerNode.webidl
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+/* -*- 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://webaudio.github.io/web-audio-api/
+ *
+ * Copyright © 2012 W3C® (MIT, ERCIM, Keio), All Rights Reserved. W3C
+ * liability, trademark and document use rules apply.
+ */
+
+enum PanningModelType {
+  "equalpower",
+  "HRTF"
+};
+
+enum DistanceModelType {
+  "linear",
+  "inverse",
+  "exponential"
+};
+
+[Pref="dom.webaudio.enabled"]
+interface PannerNode : AudioNode {
+
+    // Default for stereo is equalpower
+    attribute PanningModelType panningModel;
+
+    // Uses a 3D cartesian coordinate system
+    void setPosition(double x, double y, double z);
+    void setOrientation(double x, double y, double z);
+    [Deprecated="PannerNodeDoppler"]
+    void setVelocity(double x, double y, double z);
+
+    // Cartesian coordinate for position
+    readonly attribute AudioParam positionX;
+    readonly attribute AudioParam positionY;
+    readonly attribute AudioParam positionZ;
+
+    // Cartesian coordinate for orientation
+    readonly attribute AudioParam orientationX;
+    readonly attribute AudioParam orientationY;
+    readonly attribute AudioParam orientationZ;
+
+    // Distance model and attributes
+    attribute DistanceModelType distanceModel;
+    attribute double refDistance;
+    attribute double maxDistance;
+    attribute double rolloffFactor;
+
+    // Directional sound cone
+    attribute double coneInnerAngle;
+    attribute double coneOuterAngle;
+    attribute double coneOuterGain;
+
+};
+
+// Mozilla extension
+PannerNode implements AudioNodePassThrough;
+