Grass Valley Maestro Master Control v.2.4.0 - Manual (Page 226)

MAESTRO User Manual 222
Audio Controls
Normal : left input to left output, right input to right output.
Channel Reverse : the left and right inputs are reversed to the output.
Left Only : the left input is sent to both the left and right outputs.
Mono Mix : the left and right inputs are summed and sent to both outputs.
Right Only : the right input is sent to both the left and right outputs.
Future software releases will expand upon the options and displays in the
stereo drill-down screens for stereo audio groups.
If a Dolby E or other non-audio type signal is presented to the Maestro Pro-
cessor, the level controls as well as the remapping buttons are inhibited.
The audio group button is turned red, and the level controls are inhibited
and display “No Adjust.”
5.1 Surround
Note The functions described below for Dolby 5.1drill-down screens are functional
only for Dolby 5.1 audio groups that are mapped 1:1 in the Audio Input tables.
If the Audio Input tables are used to map other channels into the Dolby 5.1
audio group output, the drill-down remapping functions are not functional,
even though the soft buttons appear on the left side of the VGA display. This
will be corrected in a future software release.
For a surround audio group, the drill-down screen provides three pairs of
level meters, an audio level control for gain, and channel remapping func-
tions. The soft buttons on the left side of the VGA display are changed to
show the remapping functions available. The top-most position is always
reserved for the normal or default mapping for the audio group.
There are three different modes or remapping models available for 5.1 sur-
round audio group types. These are selected in the Audio Options table
during configuration. These three modes differ in how monophonic signals
are mapped to the surround outputs. Sometimes this functionality is called
up-mixing, in that an audio group of signals is mapped to a larger number
of output channels. Down-mixing usually refers to mapping a large
number of audio channels into a smaller number of output channels.
The three available modes are Center Channel Mono Mode (Default), Two-
Channel Mono Mode, and Three-Channel Mono Mode.
Center Channel Mono Mode (Default)
This version maps the 5.1 channels normally, but favors the center output
channel of the group when mono type signals are mapped to a surround
group. The difference between this mode and the others is that when mono
signals are presented, the drill-down selections on the control surface will
map them to the center channel. In addition, when a mono down-mix of
surround is selected it also maps the audio to the center channel.