Update index.html

index.html

@@ -697,63 +697,65 @@
       });
     }
             
-            // 音声を再生
-            function playAudio(file, startTime) {
-                if (!audioBuffers[file]) return;
-                
-                // 既存のソースがあれば停止
-                if (audioSources[file]) {
-                    try {
-                        audioSources[file].stop();
-                    } catch(e) {
-                        console.log("Audio source already stopped");
-                    }
-                }
-                
-                // SoundTouchプロセッサーを作成
-                const source = audioContext.createBufferSource();
-                source.buffer = audioBuffers[file];
-                
-                const soundTouchProcessor = new soundtouch.SimpleFilter(audioContext, source, soundTouchNodes[file]);
-                
-                // ボリュームスライダーの値を取得
-                const volumeSlider = document.querySelector(`.audio-slider[data-audio="${file}"]`);
-                const volume = parseFloat(volumeSlider.value) * parseFloat(globalVolumeSlider.value);
-                
-                // ゲインノードを設定
-                gainNodes[file].gain.value = volume;
-                
-                // 接続
-                soundTouchProcessor.connect(gainNodes[file]);
-                gainNodes[file].connect(audioContext.destination);
-                
-                // 再生
-                const duration = video.duration || videoDuration;
-                const endTime = parseFloat(endTimeInput.value) || duration;
-                const loop = loopCheckbox.checked;
-                
-                // 再生範囲を計算
-                const playStartTime = Math.max(startTime, parseFloat(startTimeInput.value) || 0);
-                const playEndTime = Math.min(endTime, duration);
-                const playDuration = playEndTime - playStartTime;
-                
-                // 再生時間が正の場合のみ再生
-                if (playDuration > 0) {
-                    source.start(0, playStartTime, playDuration);
-                }
-                
-                // ループ設定
-                if (loop) {
-                    source.loop = true;
-                    source.loopStart = parseFloat(startTimeInput.value) || 0;
-                    source.loopEnd = endTime;
-                }
-                
-                // 再生速度を同期
-                soundTouchNodes[file].tempo = currentPlaybackRate;
-                
-                audioSources[file] = source;
-            }
+function playAudio(file, startTime) {
+    if (!audioBuffers[file]) return;
+
+    // 既存のソースがあれば停止
+    if (audioSources[file]) {
+        try {
+            audioSources[file].stop();
+        } catch(e) {
+            console.log("Audio source already stopped");
+        }
+    }
+
+    const source = audioContext.createBufferSource();
+    source.buffer = audioBuffers[file];
+    
+    // SoundTouch プロセッサーを作成
+    soundTouchNodes[file] = new soundtouch.SoundTouch(audioBuffers[file].sampleRate);
+    soundTouchNodes[file].tempo = currentPlaybackRate;
+    soundTouchNodes[file].pitch = 1; // ピッチ変更なし
+    
+    // SimpleFilter を作成し、Web Audio Node を取得
+    const soundTouchProcessor = new soundtouch.SimpleFilter(audioContext, source, soundTouchNodes[file]);
+    const soundTouchNode = soundTouchProcessor.getWebAudioNode();
+
+    // ボリュームスライダーの値を取得
+    const volumeSlider = document.querySelector(`.audio-slider[data-audio="${file}"]`);
+    const volume = parseFloat(volumeSlider.value) * parseFloat(globalVolumeSlider.value);
+
+    // ゲインノードを設定
+    gainNodes[file].gain.value = volume;
+
+    // 接続
+    soundTouchNode.connect(gainNodes[file]);
+    gainNodes[file].connect(audioContext.destination);
+
+    // 再生
+    const duration = video.duration || videoDuration;
+    const endTime = parseFloat(endTimeInput.value) || duration;
+    const loop = loopCheckbox.checked;
+
+    // 再生範囲を計算
+    const playStartTime = Math.max(startTime, parseFloat(startTimeInput.value) || 0);
+    const playEndTime = Math.min(endTime, duration);
+    const playDuration = playEndTime - playStartTime;
+
+    // 再生時間が正の場合のみ再生
+    if (playDuration > 0) {
+        source.start(0, playStartTime, playDuration);
+    }
+
+    // ループ設定
+    if (loop) {
+        source.loop = true;
+        source.loopStart = parseFloat(startTimeInput.value) || 0;
+        source.loopEnd = endTime;
+    }
+
+    audioSources[file] = source;
+}
             
             // 再生関数
             function playMedia() {