Pitch Bend
Pitch bend allows you to change the pitch of a sound over time.
This function can be used for creating the classic tape stop effect, or for blending the tempo/pitch of one track into another, for example.
In the Pitch Bend dialog, you can draw the envelope curve that you want the pitch to follow. The pitch offset is displayed on the vertical ruler of the envelope and the range of the envelope effects can be adjusted. Positive pitch values produce sounds with a higher pitch and a shorter length, negative values produce sounds with a lower pitch and a longer length.
Changing the pitch using pitch bend affects the length of the audio. However, you can use the Length Preservation option to control the time stretch of the resulting audio.