Apple Motion 4 - Manual (Page 1356)

• Square: Each peak of the animation curve is drawn by four keyframes. A selected
keyframe has no tangent handles.
• Continuous: This method behaves like Smooth interpolation, but without access to
Bezier handles, as they are calculated automatically from peak to peak.
Attack: The amount of the offset in frames between the first keyframe of the curve and
the peak of the curve generated by the Audio behavior. The number of frames that the
curve takes to reach its peak from its initial value is called the Attack. This parameter is
only available if Respond To is set to Transients.
Attack side of the curve
Release: The amount of the offset in frames between the peak of the curve generated
by the Audio behavior and the last keyframe of the curve. The number of frames that the
curve takes to reach its final value from its peak is called the Release. This parameter is
only available if Respond To is set to Transient.
Apply Mode: Sets the method by which the audio analysis affects the curve. Value can
be set to Add, Subtract, Multiply, or Add and Subtract.
Delay: Sets a delay in frames to offset the resulting keyframes.
Scale: Sets the scale factor to affect the result of the audio analysis.
Apply To: Sets the object parameter to which the audio behavior is applied.
HUD Controls
The HUD contains the Source Audio, Respond To, Graph Range, Audio Graph, Scale, and
Apply To controls.
1356 Chapter 20 Working with Audio