defined detune property on WebAudioSoundManager prototype

Author: pavle-goloskokovic

v3/src/sound/WebAudioSoundManager.js

@@ -101,4 +101,21 @@ Object.defineProperty(WebAudioSoundManager.prototype, 'rate', {
         }, this);
     }
 });
+/**
+ * Global detune.
+ * @property {number} detune
+ */
+Object.defineProperty(WebAudioSoundManager.prototype, 'detune', {
+    get: function () {
+        return this._detune;
+    },
+    set: function (value) {
+        this._detune = value;
+        this.sounds.forEach(function (sound) {
+            // invoke sound's detune setter method to update
+            // value based on new global detune value
+            sound.detune = sound.detune;
+        }, this);
+    }
+});
 module.exports = WebAudioSoundManager;