Note: Extreme pitch and tempo changes (for instance 24 semi-tones, which is quite a lot!) can lead to noise. Voice/Vocals reduction: reduce vocals so that only music is audible (does not work with all audio recordings!) Play left/right channels separately (e.g. Import various formats including mp3, wav, m4a, ogg, aac. Support for arbitrary pitch (even deviating from semi-tones)

Change pitch and tempo (speed, time-stretch) independently. Use cases of Music Speed Changer are for instance: practicing guitar and other music instruments, transcriptions, change the speed of audiobooks, language learning. You are about to download a trial version of the program. It is also possible to export the changed audio file for playback in other players. The download version of Audio Speed Changer Pro is 1.5.5.168. Just select an audio file, mark the region you want to play (and loop/repeat) and change tempo and pitch on the fly. You can also slow a song down which can be useful if you want to transcribe a song. If you feel like a song is too slow for you, you can easily speed it up without changing its key.

Music Speed Changer changes audio tempo (speed) and pitch in realtime quick and easy. This is a free web service that allows you to change the tempo of any audio file of your choice while maintaining its pitch.

Audio speed changer pro