Upmix Control; Upmixing Setup - Linear Acoustic AERO.one V3 User Manual

Linear Acoustic AERO.one V3 User Guide
Surround channels.
If signals in any or all of the discrete Center or Surround input channels cross the thresh-
old, the Auto upmixing process is inaudibly crossfaded to bypass, and all audio channels
are then passed completely discrete with no upmixing at all.
This method absolutely prevents clipping or cutting dialogue while ensuring that two chan-
nel content remains upmixed to provide viewer expected surroundfield consistency.
4.5.6

Upmix Control

Manual control of upmixer is as follows (note that if under GPI control, a flashing "g" will
be displayed and no adjustments will be permitted):
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4.5.7

Upmixing Setup

There are very few controls required for setup of the upmixer:
• Center Width: controls how much of center channel output of the upmixer is spread
back into the Left and Right channel Main Outputs of the unit; The Default is 33% to
prevent two channel mono material from being reproduced as stark center channel
only audio, and to prevent center channel build-up with music content.
• LCR Sum to LFE: Creates a downmix compatible low pass filtered bass enhance-
ment signal to feed the LFE channel.
• LCR Sum Level: Sets the level of the created bass enhancement signal sent to the
LFE output. Default is 12%.
• Upmix Dsc Thresh: Sets the threshold for the AutoMAX-II algorithm to decide that
the input audio is not 5.1. Audio present in the Center, Left Surround, or Right sur-
round channels above this threshold will trigger the auto upmixer to start upmixing the
LfRf (channels 1/2) audio. Default is -75dB.
• Upmix to Discr: Sets the crossfade speed for disabling the upmixer and returning to
discrete. As there is no loss of any audio, speed can be set to taste without fear. Default
is Medium and which is fast enough for all content we have tested.
• Discr to Upmix: Sets the crossfade speed for enabling the upmixer. Since upmixing
needs to be enabled faster than it needs to be disabled, the default setting is Quick.
Set On Now: Enables upmixing for Left/Right front applied to Main In 1/2.
Set Off Now: Disables upmixing
Auto: Enables auto detection mode for upmixing, see below for details
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Detailed Operation