diff --git a/popup.js b/popup.js
index fe6e7d6..95e8f38 100644
--- a/popup.js
+++ b/popup.js
@@ -1,52 +1,22 @@
 let audioContext = new AudioContext();
-let oscillatorLeft;
-let oscillatorRight;
-let gainNode = audioContext.createGain();
-gainNode.connect(audioContext.destination);
+let oscillator = audioContext.createOscillator();
 
-function startBinauralBeats(frequency, delta, volume) {
-    if (oscillatorLeft) oscillatorLeft.stop();
-    if (oscillatorRight) oscillatorRight.stop();
+oscillator.connect(audioContext.destination);
+oscillator.frequency.setValueAtTime(440, audioContext.currentTime);
 
-    oscillatorLeft = audioContext.createOscillator();
-    oscillatorRight = audioContext.createOscillator();
+document.getElementById('togglePlayPause').addEventListener('click', async function() {
+    if (audioContext.state === 'suspended') {
+        await audioContext.resume();
+    }
 
-    oscillatorLeft.frequency.setValueAtTime(frequency, audioContext.currentTime);
-    oscillatorRight.frequency.setValueAtTime(frequency + delta, audioContext.currentTime);
-    gainNode.gain.setValueAtTime(volume, audioContext.currentTime);
-
-    oscillatorLeft.connect(gainNode);
-    oscillatorRight.connect(gainNode);
-
-    oscillatorLeft.start();
-    oscillatorRight.start();
-}
-
-document.getElementById('togglePlayPause').addEventListener('click', function() {
-    startBinauralBeats(
-        parseFloat(document.getElementById('frequencySlider').value),
-        parseFloat(document.getElementById('deltaSlider').value),
-        parseFloat(document.getElementById('volumeSlider').value)
-    );
-    this.textContent = this.textContent === 'Play' ? 'Pause' : 'Play';
-});
-
-document.getElementById('frequencySlider').addEventListener('input', function() {
-    startBinauralBeats(
-        parseFloat(this.value),
-        parseFloat(document.getElementById('deltaSlider').value),
-        parseFloat(document.getElementById('volumeSlider').value)
-    );
-});
-
-document.getElementById('deltaSlider').addEventListener('input', function() {
-    startBinauralBeats(
-        parseFloat(document.getElementById('frequencySlider').value),
-        parseFloat(this.value),
-        parseFloat(document.getElementById('volumeSlider').value)
-    );
-});
-
-document.getElementById('volumeSlider').addEventListener('input', function() {
-    gainNode.gain.setValueAtTime(parseFloat(this.value), audioContext.currentTime);
+    if (this.textContent === 'Play') {
+        oscillator.start();
+        this.textContent = 'Pause';
+    } else {
+        oscillator.stop();
+        oscillator = audioContext.createOscillator();
+        oscillator.connect(audioContext.destination);
+        oscillator.frequency.setValueAtTime(440, audioContext.currentTime);
+        this.textContent = 'Play';
+    }
 });