Sound Tools On-device

Extreme Time Stretch

Stretch a short recording to 10–100% speed while aiming to preserve pitch. Extreme settings can sound textured or distorted.

Loading the interactive controls. Processing happens on your device.

How to use Extreme Time Stretch

  1. Choose a short mono or stereo recording.
  2. Set the speed and process it.
  3. Listen to the result and download WAV.

Common questions

How long can the input be?

Choose a file up to 12 seconds and 20 MB. Output is limited to two minutes.

Does slowing affect pitch?

The processor aims to preserve pitch, but extreme stretching can create audible artifacts.

Where is the audio processed?

Processing happens on your device in your browser.

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