Added setRate method to BaseSound class that contains logic for applying rate and detune settings to sound so it can be reused in both Web Audio and HTML5 Audio implementations

Author: pavle-goloskokovic

v3/src/sound/BaseSound.js

@@ -260,6 +260,16 @@ var BaseSound = new Class({
     },
     update: NOOP,
     destroy: function () {
+    },
+    /**
+     * @private
+     */
+    setRate: function () {
+        var cent = 1.0005777895065548; // Math.pow(2, 1/1200);
+        var totalDetune = Math.max(-1200, Math.min(this.currentConfig.detune + this.manager.detune, 1200));
+        var detuneRate = Math.pow(cent, totalDetune);
+        var totalRate = this.currentConfig.rate * this.manager.rate * detuneRate;
+        return totalRate;
     }
 });
 module.exports = BaseSound;