Update index.html

index.html

@@ -963,7 +963,19 @@ document.addEventListener('DOMContentLoaded', function() {
     const previewTime = document.getElementById('preview-time');
     const bufferingIndicator = document.getElementById('buffering-indicator');
     const syncStatus = document.getElementById('sync-status');
-    
+    // 動画要素にピッチ保持を設定
+video.preservesPitch = true;
+video.mozPreservesPitch = true;
+video.webkitPreservesPitch = true;
+
+// 合成音声のaudio要素を作成
+combinedAudioElement = new Audio(url);
+// ピッチ保持を設定
+combinedAudioElement.preservesPitch = true;
+combinedAudioElement.mozPreservesPitch = true;
+combinedAudioElement.webkitPreservesPitch = true;
+
+  
     // 音声オブジェクトを作成
     const audioElements = {};
     const audioBuffers = {};
@@ -1580,16 +1592,26 @@ document.addEventListener('DOMContentLoaded', function() {
         updatePlaybackRate(speed);
     });
     
-    function updatePlaybackRate(speed) {
-        if (!isAudioCombined) return;
-        
-        currentPlaybackRate = speed;
-        video.playbackRate = speed;
+function updatePlaybackRate(speed) {
+    if (!isAudioCombined) return;
+    
+    currentPlaybackRate = speed;
+    video.playbackRate = speed;
+    
+    // ピッチ保持を再設定
+    video.preservesPitch = true;
+    video.mozPreservesPitch = true;
+    video.webkitPreservesPitch = true;
+    
+    if (combinedAudioElement) {
+        combinedAudioElement.playbackRate = speed;
         
-        if (combinedAudioElement) {
-            combinedAudioElement.playbackRate = speed;
-        }
+        // 音声のピッチ保持を再設定
+        combinedAudioElement.preservesPitch = true;
+        combinedAudioElement.mozPreservesPitch = true;
+        combinedAudioElement.webkitPreservesPitch = true;
     }
+}
     
     // 全画面ボタン
     fullscreenBtn.addEventListener('click', function() {