文件与媒体
音频速度改变器
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.
编辑注
Understanding · Faster, same pitch.
本深度章节目前仅有英文版本。上方的转换工具支持您的语言;长篇说明文章尚未翻译。
常见问题
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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