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Chapter 4 Dynamics processors 101
Surround Compressor Link parameters
Surround Compressor’s Link section provides the following parameters.
Link parameters
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Circuit Type pop-up menu: Choose the type of circuit emulated by Surround Compressor. The
choices are Platinum, Classic A_R, Classic A_U, VCA, FET, and Opto (optical).
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Grp. (Group) pop-up menus: Set group membership for each channel (A, B, C, or no group
(indicated by -). Moving the Threshold or Output Level slider for any grouped channel moves
the sliders for all channels assigned to that group.
Tip: Press Command and Option while moving the Threshold or Output Level slider of
a grouped channel to temporarily unlink the channel from the group. This lets you set
independent threshold settings while maintaining the side-chain detection link necessary for
a stable surround image.
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Byp (Bypass) buttons: Click to bypass the channel. If the channel belongs to a group, all
grouped channels are bypassed.
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Detection pop-up menu: Choose the signal type to exceed or fall below the threshold. Max uses
the maximum level of each signal. Sum uses the summed level of all signals.
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If Max is chosen and any of the surround channels exceeds or falls below the threshold, that
channel (or group of channels) is compressed.
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If Sum is chosen, the combined level of all channels must exceed the threshold before
compression occurs.