diff -r 000000000000 -r 6474c204b198 dom/webidl/BiquadFilterNode.webidl
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dom/webidl/BiquadFilterNode.webidl	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,63 @@
+/* -*- 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.
+ */
+
+enum BiquadFilterType {
+  // Hack: Use numbers to support alternate enum values
+  "0", "1", "2", "3", "4", "5", "6", "7",
+
+  "lowpass",
+  "highpass",
+  "bandpass",
+  "lowshelf",
+  "highshelf",
+  "peaking",
+  "notch",
+  "allpass"
+};
+
+interface BiquadFilterNode : AudioNode {
+
+    attribute BiquadFilterType type;
+    readonly attribute AudioParam frequency; // in Hertz
+    readonly attribute AudioParam detune; // in Cents
+    readonly attribute AudioParam Q; // Quality factor
+    readonly attribute AudioParam gain; // in Decibels
+
+    void getFrequencyResponse(Float32Array frequencyHz,
+                              Float32Array magResponse,
+                              Float32Array phaseResponse);
+
+};
+
+/*
+ * The origin of this IDL file is
+ * https://dvcs.w3.org/hg/audio/raw-file/tip/webaudio/specification.html#AlternateNames
+ */
+partial interface BiquadFilterNode {
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short LOWPASS = 0;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short HIGHPASS = 1;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short BANDPASS = 2;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short LOWSHELF = 3;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short HIGHSHELF = 4;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short PEAKING = 5;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short NOTCH = 6;
+    [Pref="media.webaudio.legacy.BiquadFilterNode"]
+    const unsigned short ALLPASS = 7;
+};
+