The Time Correction tool changes the playback speed, but not the pitch.    
The following setting options are available in the Timescale Modification Factor area:
Option button
Percentage
Changes the playback speed in percent. The change can either be set on the slider or entered in the input field.
Option button
Beats per Minute
Changes the playback speed in beats per minute (BPM). The change can be entered in the input field.
Drop-down menu
Optimization
Specifies the type of music of the audio file to be altered, so as to optimize speed changes for this file.
 


Time Correction