M-Audio Omni I/O User Manual download pdf (Page 25)

I/O Setup Primer 21

Channel Mapping and Surround Mixer

(Pro Tools HD and Pro Tools LE with Complete

Production Toolkit Only)

When mapping multichannel paths, the left

channel (L) is mapped first to the clicked Grid

box, and remaining channels fill immediately to

the right according to the default path order. Be-

cause some multichannel mixing formats use

unique track layouts, Pro Tools lets you set the

default format in the I/O Setup.

Remapping Channels

You can move the individual assignments to dif-

ferent channels, to reorder the path’s definition

(for example, changing a multichannel map to

L-R-C-LF-LS-RS).

To remap channels in a path:

 Drag the channel to the new location in the

Grid. Other channel assignments move (shuffle)

to accommodate dragged channels.

Channel Shuffling

Moving a signal from right to left results in a

shuffle of other signals after the new destination

channel. Moving a signal from left to right shuf-

fles any and all signals after the new destination

channel and leaves the previous channel empty.

Sub-Paths Follow Main Paths

When a main path is remapped, its sub-paths (if

any) will remap automatically to maintain con-

sistent routing. For example, remapping a stereo

path to different hardware outputs results in any

of its sub-paths moving with it.

Valid Paths and Requirements

While configuring the I/O Setup, certain rules

apply for path definition and channel mapping.

All paths must be valid before the I/O Setup con-

figuration can be applied.

Though it is possible to set up invalid mappings

in the Channel Grid, Pro Tools will not accept

an I/O Setup configuration unless all paths meet

the path definition and channel mapping re-

quirements, as follows:

Minimum Path Definitions All paths must have a

name, be of a specific format, and have a valid

I/O mapping.

Valid Paths Channel mapping follows certain

rules regarding overlapping paths.

• There can be no partial overlaps between

any two output paths.

• A newly-created output path must either be

completely independent of other mapped

outputs (not mapped to any other available

I/O interface/channels), or it must be an

overlapping path or sub-path completely

contained within a larger path (for exam-

ple, an LCR sub-path within a larger 5.1

path).

Customized output paths for a 5.1 mix

Changing a path’s format erases any cur-

rent channel mapping.

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