7800/7700 MultiFrame Manual
7812UDXD Series 3G/HD Up/Down/Cross Converter with Simultaneous Dual Format Outputs and AES I/O
Revision 1.1.1
Page - 147
Mixer
Select this option to output audio from the Audio mixers on the Audio Proc tab.
Dolby Encoder A
Select this option to output Encoded audio from the Dolby Encoder in slot A.
Dolby Encoder B
Select this option to output Encoded audio from the Dolby Encoder in slot B.
6.43. AUDIO DOWNMIX CONTROL TAB
The 7812UDXD series of modules can perform 5.1 PCM to stereo (LtRt or LoRo) down mixing. This is a
standard feature in all variations of the module.
Figure 6-48: Audio 5.1 Down Mix Tab
6.43.1. Downmix Type Controls
6.43.1.1. Down Mix Type Control
This control enables the user to set the type of audio down-mixing that will be performed. The user may
select from LoRo (Left Only and Right Only), LtRt (Left Total and Right Total) Prologic I and LtRt (Left
Total and Right Total) Prologic II OR may choose to perform a Custom down-mix.
LoRo
When set to
LoRo
, the down-mixer will generate Left Only and Right Only
(LoRo) stereo audio.
LtRt (Prologic I)
When set to
LtRt (Prologic I)
, the down-mixer will generate Left Total and
Right Total (LtRt) Prologic I compatible stereo audio.
LtRt (Prologic II)
When set to
LtRt (Prologic II),
the down-mixer will generate Left Total and
Right Total (LtRt) Prologic II compatible stereo audio.
Custom
When set to
custom
, the down-mixer will generate Left and Right
channels of audio using the custom down-mixing equations.