diff --git a/.analyze.js.swp b/.analyze.js.swp
new file mode 100644
index 0000000..de9614f
Binary files /dev/null and b/.analyze.js.swp differ
diff --git a/.app.js.swp b/.app.js.swp
new file mode 100644
index 0000000..8df8837
Binary files /dev/null and b/.app.js.swp differ
diff --git a/analyze.js b/analyze.js
index 334dd69..4ab497f 100644
--- a/analyze.js
+++ b/analyze.js
@@ -6,7 +6,14 @@ function startPitchDetection(callback) {
   }
 
   // Request access to the microphone
-  navigator.mediaDevices.getUserMedia({ audio: true })
+  //navigator.mediaDevices.getUserMedia({ audio: true })
+	navigator.mediaDevices.getUserMedia({
+  audio: {
+    echoCancellation: false,
+    noiseSuppression: false,
+    autoGainControl: false
+  }
+})
     .then(stream => {
       // Create an audio context and an analyser node
       const audioContext = new (window.AudioContext || window.webkitAudioContext)();
diff --git a/app.js b/app.js
index 8fb7dbb..f957658 100644
--- a/app.js
+++ b/app.js
@@ -76,7 +76,7 @@ maxInput.addEventListener('change', ()=>{
 })
 
 startPitchDetection((heardPitch)=>{
-	if(newTone) {
+	if(heardPitch !== -1 && newTone) {
 		const centsDifference = 1200 * Math.log2(heardPitch / newTone)
 		document.querySelector('#analyze-pitch input[type="range"]').value = centsDifference
 	}