All audio tools
Tempo Changer
Change the speed of music or speech with time stretching. Slow down a track for practice, or make a recording shorter while keeping its original pitch.
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How to use Tempo Changer
- Open a recording or load the demo.
- Set the playback speed and apply the tempo change.
- Compare the original and processed audio, then download the WAV.
Common questions
Does the Tempo Changer preserve pitch?
It stretches or compresses short sections of audio while keeping their pitch. Large speed changes can make transients or complex music sound different.
How does speed change the duration?
At 0.5×, a 30-second clip takes about 60 seconds. At 2×, it takes about 15 seconds.
Can I use this to practice a song?
Yes. Start around 0.75× to hear notes and rhythm more clearly. Use Audio Trimmer first if you only need one section.