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Logic Pro 9 User Manual - Help Library - Apple

Logic Pro 9 User Manual - Help Library - Apple

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Working with Surround 39<br />

<strong>Logic</strong> <strong>Pro</strong> offers extensive surround processing and mixing functions, for all major surround<br />

formats. All audio signals can be positionally mixed, allowing you to place them anywhere<br />

in the surround field. You can insert surround plug-ins into audio and instrument channel<br />

strips, which can be routed to surround auxes or outputs.<br />

<strong>Logic</strong> <strong>Pro</strong> records incoming multi-channel audio as interleaved multi-channel files, when<br />

creating a surround project. Imported split multi-channel files are converted automatically.<br />

You can also upmix or downmix non-matching signals (mono-to-multi-mono, or<br />

stereo-to-surround, as examples), allowing the use of any audio material in your surround<br />

projects. In most cases, the upmixing or downmixing is automatic, but it can be performed<br />

manually, if needed. You can bounce multi-channel projects as split and interleaved<br />

surround files.<br />

Surround encoding or decoding does not take place in <strong>Logic</strong> <strong>Pro</strong>. The <strong>Logic</strong> Studio package<br />

does, however, include Compressor, which allows you to encode surround files. See the<br />

Compressor documentation for more information.<br />

Important: To work with surround in <strong>Logic</strong> <strong>Pro</strong>, you will need an audio interface that has<br />

the number of output channels required by the chosen surround format; for example,<br />

six outputs if the 5.1 surround format is used. You will also need the same number of<br />

speakers (along with appropriate amplification) to hear the channels when mixing.<br />

This chapter covers the following:<br />

• Knowing the Surround Formats Supported by <strong>Logic</strong> <strong>Pro</strong> (p. 1158)<br />

• Understanding the Channels Used by Surround Formats (p. 1161)<br />

• Configuring <strong>Logic</strong> <strong>Pro</strong> for Surround (p. 1162)<br />

• Setting the <strong>Pro</strong>ject Surround Format (p. 1168)<br />

• Setting the Input Format of Channel Strips (p. 1169)<br />

• Setting the Output Format of Channel Strips (p. 1170)<br />

• Changing the Appearance of Surround Level Meters (p. 1172)<br />

• Working with the Surround Panner (p. 1173)<br />

• Inserting Surround Effect Plug-ins (p. 1177)<br />

1157

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