How to use Audio Speed and Pitch Changer
- Select a supported WAV and choose the linked speed/pitch multiplier.
- Check that slower playback will still fit the output time and byte limits.
- Run the resampling and listen to both duration and pitch in the downloaded WAV.
Example: Audio Speed and Pitch Changer
Raise playback speed and pitch together.
Options
- Linked speed and pitch multiplier
- 1 preserves the nominal pace. Values below 1 slow and lower pitch; values above 1 accelerate and raise pitch. It is a linked rate change.
Supported inputs and limits
Where your input is processed
This tool processes your input in this browser. Your text and files are not uploaded to UseFreeTools. Check this tool's limits for anything it may save on your device.
One multiplier controls two audible changes
The tool samples the input at a different pace. Multiplying by two halves duration and raises pitch by an octave; multiplying by one half doubles duration and lowers pitch by an octave. It does not provide independent tempo adjustment with preserved pitch, or independent pitch shifting at the original duration.
Resampling is not a mastering process
Linear interpolation creates a new sample sequence. It can alter high-frequency detail and introduce artifacts, particularly with large changes. Review speech intelligibility and tone quality instead of relying only on the reported duration. The output is PCM16 WAV, without source metadata or an MP3 encode.
Questions about Audio Speed and Pitch Changer
Can I change speed while preserving pitch?
No. This version links pitch and duration through resampling.
Does this overwrite the input?
No. It produces a new downloadable WAV.
Can resampling affect quality?
Yes. Linear interpolation and PCM16 quantization can alter the sound.