Have you ever wondered how to slow down or speed up an audio file without opening complicated platforms like Audacity or Sound Forge? At Neoteo, we thought of you with five online programs to alter the playback speed of an audio file.
TimeStretch
We'll start with TimeStretch, surely one of the best online time changers for audio files. All you have to do is drag and drop the file onto the web page and then manipulate the dials “Speed”, “Pitch” and “Tune”, to slow down or speed up the file's playback without altering its original pitch. TimeStretch is a free online service available for all web browsers.
Audio Speed and Pitch
Next, Audio Speed and Pitch is a service that alters the speed of audio files (MP3, WAV, OGG, etc.), which you can load from your computer or from the cloud. One drawback is that it has no player, and although you can adjust various playback speed parameters (conversion algorithm, audio output, etc.), you won't be able to listen to it while applying the effects. Audio Speed and Pitch is a free online service available for all web browsers.
Time Stretcher
Time Stretcher is, without a doubt, one of the simplest speed changers for audio files (from 0.50 to 2.00). You just add the file from your computer and move the timeline to then play it. Time Stretcher is a free online service available for all web browsers.
Tempo Changer
Tempo Changer (AudioTrimmer) is another service to alter the playback speed of an audio file in format (WAV, OGG, MP3, AAC, etc.). It has predefined ranges with quite broad values. The platform does not let you listen in real time; after applying the effects, you can only download the audio. Tempo Changer is a free online service available for all web browsers.
Tune Transcriber
We'll finish with Tune Transcriber, an audio file time shifter that only works with MP3 files and YouTube files. Its use is very simple: you just drag the file onto the platform's interface. At this point, an interface opens with a player and several tools to manipulate the file's playback speed. The most important is the time bar, with which you can slow down or speed up the clip. Tune Transcriber is a free online service available for all web browsers.
