Change Audio Speed

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About Change Audio Speed

Playback speed changes how long a recording takes without editing its content — handy for getting a lecture through faster, or slowing a passage of music down enough to follow it note by note.

How to use it

  1. Load the audio file you want to retime.
  2. Set a speed above or below normal.
  3. Apply and download the adjusted file.

Worth knowing

Simple speed changes move pitch as well as tempo, so a faster recording sounds higher. If you need the timing changed but the pitch kept, adjust the pitch back afterwards.

Common questions

How fast can speech go before it is unclear?
Most listeners cope with 1.5x and many manage 2x on clear recordings. Poor audio becomes unintelligible much sooner.
Does slowing audio down improve clarity?
It gives you more time to process what is there — it cannot add detail the recording never captured.