Music Speed Changer Pro

Music Speed Changer Pro


(4 stars)


Download for Android

100 - 500 downloads

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Change your music's tempo and pitch in realtime quick and easy. Just select an audio file, mark the region you want to play (and loop/repeat) and change tempo and pitch on the fly.
It is also possible to export the changed audio file for playback in other players.
Use cases of Music Speed Changer are for instance: practicing guitar and other music instruments, transcriptions, change the speed of audiobooks, language learning...

- Change pitch and tempo (speed, time-stretch) independently
- Support for arbitrary pitch (even deviating from semi-tones)
- Loop region
- Select region
- Filtering
- Import various formats including mp3, wav, m4a, ogg, aac, ...
- Export to wav and mp3
- Volume amplification *NEW*
- Voice reduction *NEW*
- Play left/right channels separately (e.g. for duet training) *NEW*

- Extreme pitch and tempo changes (for instance 24 semi-tones, which is quite a lot!) can lead to noise.
- Voice reduction quality depends on the input. It works best with little compressed music and assumes that voice was recorded in mono and later mixed into the stereo channels (which is the case for a lot of music recordings)
- The "phone state" permission is required to stop playing when a phone call arrives.

Questions, ideas, feedback? Just drop us a line using the email address or contact form on

Tags: music speed changer, audio speed changer does not work.

Recently changed in this version

*** Please drop as a line if you find a bug or have any other question: ***

- Added option to change mp3 export bitrate (under "Settings")

- Added support to open audio tracks of AAC MP4 video files

- Added voice reduction (under "Settings")
- Bug fixes

- Improved audio quality (under Settings)
- Bug fixes

Comments and ratings for Music Speed Changer Pro
  • (69 stars)

    by Dusty Stovall on 02/05/2013

    Ability to' export or save edited audio....bout time.

  • (69 stars)

    by Juan Topete on 17/04/2013

    Thounght I wish thier was tablet support

  • (69 stars)

    by Martin Rodriguez on 14/04/2013

    I love the program and it is very useful, but I can't get it to open any files. Tried restarting my phone, uninstalled and reinstalled app, but still doesn't work. Please update

  • (69 stars)

    by James Palensky on 28/03/2013

    would like refund, but unable to open program to get refund.

  • (69 stars)

    by phillip scott on 25/03/2013

    Exactly what I was looking for as far as changing the pitch for songs. Its very responsive and user friendly.

  • (69 stars)

    by Steve Ellis on 11/01/2013

    I've just replaced my windows laptop with an Asus transformer and needed a speed changer for my teaching work. This is excellent - pitch and tempo adjustable whilst track plays. Thanks.