Audio Speed & Pitch
Adjust audio speed (with pitch preservation) or change pitch independently. All processing happens in your browser—no file uploads, completely free.
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点击选择，或把音频拖到这里
调整播放速度与音调（升降调）· 全程本地处理，不上传服务器
FAQ
Will changing speed make the voice sound higher?
No, not by default. The pitch remains unchanged when only adjusting speed (no high-pitched 'chipmunk' effect). To change pitch, adjust the pitch slider separately.
How do I change the pitch?
Pitch is adjusted in half-step increments: positive values raise pitch, negative values lower it. ±12 steps equal one octave, and this does not affect playback speed.
What's the speed range?
0.5x to 2x speed, adjustable via preset buttons or fine-tuning with the slider.
Are files uploaded?
No. All processing occurs locally in your browser—audio files never leave your device.
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