Apple Soundtrack Pro 3 - Manual (Page 343)

• Rotation: Use this slider to alter the angle at which each signal starts out. This slider
ranges from -180 degrees to 180 degrees and affects the input signal. For example,
with no other panning, the right channel emanates from a location 45 degrees to the
right. With rotation at +65 degrees, the signal appears at 110 degrees—directly out of
the right surround speaker.
To alter the angle from
which each signal starts...
...drag the Rotation slider.
Note: This setting interacts with the position parameter when the panner mode is not
fully attenuating.
• Width: Use the Width slider to create a widened surround image. This slider is intended
primarily for stereo sources in that it spreads the left and right inputs into adjacent
channels. This creates the illusion of a widened sound stage without the hole at the
center that moving the puck rearward would create. For some movie theaters, it may
be necessary to use the Width slider to bleed the center signal in to the left and right
speakers. At 0%, all inputs go to their respective outputs. As you drag the Width slider
to the right, L and R inputs start to bleed into Ls and Rs respectively, and to a lesser
extent, L and R bleed into C, C bleeds slightly into L and R, and Ls and Rs start to merge.
343 Chapter 13 Mixing Surround Sound