Mixing : Mixdown : Bounce Options : Format

Format
This is the format for the bounced result. Options include Mono (Summed), Multiple Mono, and Interleaved.
To set the format of the bounced file:
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Mono (Summed)
Creates a single disk file that is a summed mono mix of the current sources being monitored.
Before bouncing to disk, make sure your levels are below –3 dB to avoid clipping that occurs when left and right signals exceed –3 dB below maximum, or full code (0 dBFS).
Multiple Mono
Creates multiple mono files with the same number of channels as the source path.
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If the source output or bus path is stereo, two mono files will be created, and appended with “.L” and “.R” suffixes on bounce.
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If a multichannel format is used (for example, six-channel, 5.1), individual mono files will be created for each member of the path. Files will be appended with path suffixes according to the path definition in the I/O Setup dialog.
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If the source output or bus path is mono, the pop-up menu will switch from multiple mono to mono, and will create one mono file (no summing of multiple sources).
Interleaved
Creates a single, interleaved file that contains all of the bounced streams from the chosen output path. In an interleaved stereo bounce, tracks assigned to odd-numbered outputs are sent to the left channel, and tracks assigned to even-numbered outputs are sent to the right channel.
Pro Tools also lets you bounce multichannel interleaved files of any supported multichannel file type (such as 5.1). This can simplify file management of mixes and projects for backup and archiving.