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Linear Acoustic AERO.mobile User Guide
4.4.2
GPI Control (Flashing "g")
When enabled the unit is under GPI control and most changes are not allowed. This will
be indicated in the menus by a lower-case flashing "g" in the left corner of the display.
4.4.3
GPI Function (GPI 1-4)
Selects the function of each GPI input. Selections are:
•
•
•
•
•
•
4.4.4
GPI Preset (GPI 1-4)
Defines which of the stored presets a GPI will recall. Any of the sixteen stored presets are
available for selection.
4.4.5
Downmix Setup:
•
Type: LtRt/LoRo - The AERO.mobile is able to create an LoRo or LtRt output from
an applied 5.1 channel signal for output on 1/2. Note that due to the required phase
encoding, selection of LtRt will increase the latency of the 7/8 output to 21 millisec-
onds. For mobile applications, LoRo is the recommended default.
•
Downmx Ctr Level - Allows adjustment of Center from 0dB to -6dB for LoRo mode
only, default is -3dB.
•
Downmx LFE Level - Allows adjustment of LFE from 0dB to OFF for LoRo mode
only, default is -10dB.
None: No function for this GPI (as the name would lead you to believe)
Pri Preset: GPI selects the preset defined below for the Primary processor.
Sec Preset: GPI selects the preset defined below for the Secondary processor.
ALT Off/On: Selects ALT (alternate audio program) audio present on input
7/8 and can be commanded to replace audio present there from downmix or
the secondary Mobilizer engine in 2+2 mode. This is useful for EAS.
ALT On/Off: Inverted version of above.
Mode 2/0 Off/On: When active, mutes Inputs 3-6. This is done if the source
audio is definitely 2 channels and prevents extraneous signals that might be
present on Inputs 3-6 from being added to the downmix. Useful if the Main
Input is being fed from a 4 channel source where 1/2 are the main program
and 3/4 are Natural Sound or tones.
24
Detailed Operation
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