ファイル・メディア
オーディオ速度変更
Speed up or slow down audio without changing pitch.
Drop a file or click to browse
0.5× to 2.0× preserving pitch (FFmpeg atempo)
FFmpeg.wasm runs entirely in your browser. The first use downloads ~30 MB of engine — cached for every subsequent run.
編集者注
Understanding · Faster, same pitch.
この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。
よくある質問
Quick answers.
›Will the audio pitch change if I speed it up?
No. The tool uses a time-stretching algorithm that preserves the original pitch while only altering the playback duration.
›Which audio formats are supported?
Most standard formats compatible with your browser are supported, including `MP3`, `WAV`, `OGG`, and `AAC`.
›Does this tool upload my audio files?
No. All audio processing is handled by your browser's local engine. Your files stay on your device and are never sent to our infrastructure.
›Can I save the modified audio file?
Yes. After adjusting the playback speed to your preference, you can export and download the resulting audio file directly from the interface.
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