Apple Logic Pro X - Manual (Page 742)

Chapter 22 Surround in Logic Pro X 742
Surround effects
Logic Pro X offers a number of surround effect plug-ins, and also includes surround versions
of the Sculpture and ES2 synthesizers. Your Audio Units instruments and effects may also work
in surround.
Important: The project surround format determines the surround format of plug-ins. For more
information, see Set the project surround format .
Insert a surround effect plug-in
1 Set the channel strip’s output to Surround. For more information, see Set the channel strip
output format .
2 Click any Insert slot, then navigate to the Mono → Surround (on mono channels), Stereo →
Surround (on stereo channels), or Surround version (on surround channels) of the plug-in you
want to use.
For example, on a stereo format channel strip, navigate to Delay > Delay Designer > Stereo → 5.1
(ITU 775). If the project surround format is set to 7.1 (SDDS), the Plug-in pop-up menu of a stereo
channel strip is displayed as follows: Delay > Delay Designer > Stereo → 7.1 (SDDS).
Tip: It’s possible to release the pointer on the plug-in name, instead of navigating all the way
through the hierarchy to the channel format. The plug-in opens automatically using the default
channel strip format.
Insert plug-ins that do not match the channel format
m Option-click a channel strip Insert slot.
The Plug-in pop-up menu displays all available formats for the plug-in, rather than being
limited to the matching format. Any down- or upmixing that may be necessary will
happen automatically.
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The default format of software instruments is stereo (if available). Mono and the project
surround format are offered as additional formats.
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The default format of effects plug-ins is the current channel strip format (at the insert point in
the signal path).
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All plug-in format variations (based on the current channel strip input format, and all available
plug-in output formats) are offered, up to the maximum allowed by the project surround
format.
Note: This applies only if the output of the channel strip is already routed to a surround bus
or output.
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Logic Pro effects plug-ins can also be operated in a multi-mono configuration, based on the
project surround format.
Logic Pro X automatically performs surround downmixes and upmixes whenever the format of
the input and output channels don’t match. For example, if you insert a quadraphonic plug-in into
a 5.1 bus, Logic Pro X performs a downmix from 5.1 to Quad, followed by an upmix back to 5.1.