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Change speed by resampling (pitch shifts with speed)
Details
Varispeed-style change: resamples the audio so speed and pitch move together, like tape speeding up or slowing down.
Execution
Fill in the form, run the tool, and review the result in one place.
Samples
Related
Ready for a run
Tool usage guide
This tool changes audio playback speed by resampling, which simultaneously alters pitch, similar to speeding up or slowing down a tape. It supports common audio formats and allows you to adjust the speed factor and output format.
Background
You have a one-hour podcast episode and want to listen during a 40-minute commute.
Problem
The episode is too long to finish in the available time.
How to use
Upload the podcast audio file, set the speed factor to 1.5, and select MP3 as the output format.
Outcome
The podcast plays 50% faster, allowing you to complete it within your commute without missing content.
Background
A music student is learning a fast guitar solo from a recording.
Problem
The solo's speed makes it difficult to follow and replicate accurately.
How to use
Upload the music file, set the speed factor to 0.75, and choose WAV output for high quality.
Outcome
The solo slows down by 25%, making it easier to learn and practice at a manageable pace.
You can upload common audio formats including MP3, WAV, AAC, and others, with a file size limit of 200 MB.
Resampling changes both speed and pitch together; increasing speed raises pitch, and decreasing speed lowers it.
No, this tool uses resampling, so pitch always changes with speed. For pitch-independent adjustments, use a time-stretching tool.
The speed factor can be set from 0.25 (slower) to 3 (faster), with a default of 1.2.
There is no specific length limit, but files must be under 200 MB in size.