Audio Speed Changer

The online audio speed changer tool changes the playback speed (tempo) and key (pitch) of music independently. The tool is ideal for changing the playback speed and/or key for song transcriptions, instrumental training (piano, guitar, violine, flute, ...), vocal training, but also for language learning.

The conversion process involves four steps:

Step 1: Select song




Microsoft OneDrive

Step 2: Speed and pitch

Select the playback speed change and the pitch change.

A value smaller than zero means that the resulting key is lower than the original key (and vice-versa). A value of zero means that the key is not changed. One full step corresponds to one semitone. Decimals can be used for fine adjustments (for instance for non-western music styles). Example: a change of -12 semitones means that the song is played one octave lower.

A value smaller than 100% means that the speed is reduced while a value greater than 100% means that the playback speed is increased. A value of 100% means that the speed is not changed. Example: a change of 50% means that the playback speed is slowed down to half as fast as the original. A change of 200% means the playback speed is twice as fast as the original.

Step 3: Output options

Select the output format and processing method.


Step 4: Convert