Audio Speed Changer

Change audio playback speed and tempo online. Speed up voice recordings or slow down songs with Web Audio resampling.

Category: Video & Audio

How to Use Audio Speed Changer

  1. Upload your audio recording (MP3, WAV, AAC, M4A).
  2. Select your target playback speed multiplier (0.5x to 2.0x).
  3. Click Process to resample the audio and download your clean WAV file.

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Frequently Asked Questions

Does changing audio speed alter the pitch?

Yes. Our engine uses standard Web Audio resampling, which shifts pitch proportionally with speed (higher pitch when sped up, lower pitch when slowed down). Independent pitch preservation is not performed.

Which audio formats are supported?

You can upload MP3, WAV, AAC, and M4A audio files up to your browser's memory capacity and export clean 16-bit WAV audio.

Is my audio uploaded to external servers?

No. All audio processing runs locally inside your browser memory using the Web Audio API for total privacy.