diff --git a/README.md b/README.md
index 393b992..d281e32 100644
--- a/README.md
+++ b/README.md
@@ -51,7 +51,7 @@ var detector = new PitchDetector({
 	// We can interpolate (very hacky) by looking at neighbours of the best 
 	// auto-correlation period and shifting the frequency a bit towards the
 	// highest neighbour.
-	interpolateFrequency: true // default: true
+	interpolateFrequency: true, // default: true
 
 	// Callback on pitch detection (Optional)
 	onDetect: function(stats, pitchDetector) { 
@@ -81,10 +81,10 @@ var detector = new PitchDetector({
 	// at the same time!
  
 	// Signal Normalization (Optional)
-	normalize: "rms" // or "peak". default: undefined
+	normalize: "rms", // or "peak". default: undefined
 
 	// Only detect pitch once: (Optional)
-	stopAfterDetection: false
+	stopAfterDetection: false,
 
 	// Buffer length (Optional)
 	length: 1024, // default 1024
@@ -97,10 +97,10 @@ var detector = new PitchDetector({
 	maxFrequency: 20000,
 
 	minPeriod: 2,  // by period (i.e. actual distance of calculation in audio buffer)
-	maxPeriod: 512 // --> convert to frequency: frequency = sampleRate / period
+	maxPeriod: 512, // --> convert to frequency: frequency = sampleRate / period
 
 	// Start right away
-	start: true // default: false
+	start: true, // default: false
 })
 ```
 
diff --git a/pitchdetector.js b/pitchdetector.js
index 87e48db..eb6d517 100644
--- a/pitchdetector.js
+++ b/pitchdetector.js
@@ -59,7 +59,6 @@ function getLiveInput(context,callback){
 	                    "googNoiseSuppression": "false",
 	                    "googHighpassFilter": "false"
 	                },
-	                "optional": []
 	            },
 	        }, function(stream){
 	        	var liveInputNode = context.createMediaStreamSource(stream);
@@ -533,4 +532,4 @@ if(typeof module !== 'undefined') {
 } else {
 	window.PitchDetector = PitchDetector;
 }
-})();
\ No newline at end of file
+})();