Apple Soundtrack Pro 2 - Manual (Page 159)

Chapter 5 Working in the Timeline 159
To adjust the fade type:
1 Double-click the fade in the Timeline.
The Fade Selector window appears.
2 Click one of the four buttons on the left side of the Fade Selector to select a fade type.
 Linear: The rate of attenuation stays constant over the length of the fade.
 Logarithmic: Starts quickly, then slowly tapers off toward the end.
 Exponential: Starts slowly, then moves quickly toward the end.
 S-curve: Eases in and out of the fade, with the midpoint at 0 dB.
Note: This list describes the different types of fade-ins. The reverse behavior is true for
fade-outs in the logarithmic and exponential cases.
The fade in the Timeline is updated to reflect your choice of fade type.
Note: The default fade type is +3 dB. Choose Soundtrack Pro > Preferences > General
to change the default fade type.
Linear
Logarithmic
Exponential
S-curve