- In order to change the speed of a certain time frame of sound, first choose the track you want to speed up, and highlight the part you want to change.
2. Once it is highlighted, drag the mouse up to the toolbar, and choose the tab “Effect.”
3. In the “Effect Tab,” choose the the option “Change Speed…”
4. The window for “Change Speed” will appear. IN the box, there is a dial that can be pushed to the left or the right to either speed up or slow down the sound. Move it to the percentage and speed multiplier that you want, and then press OK.
5. Then, the speed of the soundbite has changed.