Grass Valley DAP-1781 - Manual (Page 47)

GUIDE TO INSTALLATION AND OPERATION
DAP-1781 | 47
will use the Default Metadata Configuration if the Reversion mode is set to Default, otherwise it will use the
metadata parameters in the selected Backup Metadata (Metadata panel) when set to Backup Metadata.
Downmix Settings:
The Current Settings status indicates the current set of configuration parameters used for downmixing
depending on the Operation Mode and Reversion Mode. If the Operation Mode is Follow Metadata,
Primary (external input) Metadata parameters shown in the Follow Metadata Config will be used. If the
Primary or Backup Metadata parameter is not present or not indicated, the corresponding parameter from the
Default Metadata Config will be used. If the Operation Mode is Manual, then the Primary/Backup Metadata
is ignored and the Manual Downmix Config will be used.
Follow Metadata Config:
This section reports on Metadata presence if the Follow Metadata Operation Mode is selected. The four data
boxes below the Metadata Input Presence status icon indicate the current Mode, plus the values in use for
Dialnorm, Center Mix Level and Surround Mix Level.
Apply Dialnorm: This parameter allows the dialog normalization level to be applied to the downmix. The
reference level is -31 dBFS. If set to ON, the applied level attenuation is the difference between the reference
and the value indicated in the the Dialnorm data box.
Manual Downmix Config / Default Metadata Config:
The heading of this area of the panel changes depending on the selection in the Operating Mode pull-down
above, but the available controls are the same in both cases.
• Operating Mode = Manual – the controls are used to set up the manual downmix parameters.
• Operating Mode = Follow Metadata – the controls are used to set up the default downmix parameters
for situations where the Primary/Backup metadata is absent or when certain metadata parameters are
not present or not indicated.
Mode: This pull-down menu selects the downmix mode:
• LtRt: Enables the downmix of 5.1 channels into an LtRt (Left total Right total) matrix surround
encoded stereo pair.
• LoRo: Enables the downmix of 5.1 channels into an LoRo (Left only Right only) stereo pair, which is a
conventional stereo signal.
Dialnorm: This pull-down selects the dialog normalization level. Select OFF to prevent the downmix from
applying the dialnorm. The OFF value is equivalent to the reference level of -31 dBFS. If set to ON, the
applied level attenuation is the difference between -31 dBFS and the value of the Dialnorm parameter.
Center Mix Level: Sets the center channel downmix level to the selected value.
[+3 dB, +1.5dB, 0 dB, -1.5 dB, -3 dB, -4.5 dB, -6 dB, Mute]
Surround Mix Level: Sets the surround channels (Ls & Rs) downmix level to the selected value.
[+3 dB, +1.5dB, 0 dB, -1.5 dB, -3 dB, -4.5 dB, -6 dB, Mute]
LFE Mix Level: Sets the LFE channels downmix level to the selected value.
[+10 dB, +9 dB, +7.5, +6 dB, +4.5 dB, +3 dB, +1.5dB, 0 dB, -1.5 dB, -3 dB, -4.5 dB, -6 dB,
Mute]