Working with surround – Apple Logic Pro 9 User Manual

Page 1155

Logic Pro offers extensive surround processing and mixing functions, for all major surround
formats. All audio signals can be positionally mixed, allowing you to place them anywhere
in the surround field. You can insert surround plug-ins into audio and instrument channel
strips, which can be routed to surround auxes or outputs.

Logic Pro records incoming multi-channel audio as interleaved multi-channel files, when
creating a surround project. Imported split multi-channel files are converted automatically.
You can also upmix or downmix non-matching signals (mono-to-multi-mono, or
stereo-to-surround, as examples), allowing the use of any audio material in your surround
projects. In most cases, the upmixing or downmixing is automatic, but it can be performed
manually, if needed. You can bounce multi-channel projects as split and interleaved
surround files.

Surround encoding or decoding does not take place in Logic Pro. The Logic Studio package
does, however, include Compressor, which allows you to encode surround files. See the
Compressor documentation for more information.

Important:

To work with surround in Logic Pro, you will need an audio interface that has

the number of output channels required by the chosen surround format; for example,
six outputs if the 5.1 surround format is used. You will also need the same number of
speakers (along with appropriate amplification) to hear the channels when mixing.

This chapter covers the following:

•

Knowing the Surround Formats Supported by Logic Pro

(p. 1156)

•

Understanding the Channels Used by Surround Formats

(p. 1159)

•

Configuring Logic Pro for Surround

(p. 1160)

•

Setting the Project Surround Format