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Surround Effects
SONAR lets you use your existing stereo or mono effects as surround effects.
SONAR does this through the SurroundBridge, which automatically sets up your
existing mono & stereo plug-ins so you can patch them into surround buses (buses,
not tracks).
The SurroundBridge
The SurroundBridge automatically loads enough instances of a plug-in to handle
all your surround channels. For example, if you patch a stereo effect into a
surround bus that uses 5.1 SMPTE/ITU panning, the SurroundBridge
automatically assigns the Left and Right channels of the bus to instance 1 of the
plug-in, assigns the Left Surround and Right Surround channels to instance 2, the
Center channel to instance 3, and the LFE channel to instance 4. If you patch a
mono effect into a surround bus, the SurroundBridge assigns each channel to a
single instance of the mono effect, which would create six instances of the effect on
a 5.1 surround bus. You can view and edit these assignments on the
SurroundBridge tab that’s in the property page of every effect that’s patched into a
surround bus. For example, if you want a certain effect on the Left Surround
channel of a surround bus, but not on the Right Surround channel, you can assign
these two channels to different instances of the effect you’re patching by choosing
options on the SurroundBridge tab of the effect’s property page.
The SurroundBridge also links the automatable parameters of each instance so
that when you change a parameter in one instance, you automatically change the
same parameter in all the other instances. You can unlink parameters
individually, or per-instance (see “How to Patch and Configure Surround Effects”
on page 489).
Effect Property Pages
A single property page controls all instances of an effect that is patched into a
surround bus. The effect’s property page displays a different tab for each instance
of the effect. By default, when you change an automatable parameter on one tab of
the property page, that change is duplicated on all the tabs of the property page.
However, you can “unlink” individual parameters from the other tabs by clicking
the Unlink Controls button in the effect property page, and while the button is
enabled (red), move the parameter you want to unlink, and then click the Unlink
Controls button again to disable it. Now you can change that parameter on one tab
without changing the same parameter on the other tabs. You can also link or
unlink all of an instance’s parameters by using the controls on the SurroundBridge
tab.