Grass Valley AMX-3981 2014 - Manual (Page 35)

GUIDE TO INSTALLATION AND OPERATION
AMX-3981 | 29
Dialnorm: this pulldown selects the dialog normalization level. Select OFF to prevent the downmix from applying the
dialnorm.
[OFF, -1 dBFS, -2 dBFS, -3 dBFS, ………, -31 dBFS]
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]
• Note: The LFE Mix Level pulldown sets the LFE downmix level for both Manual and Follow Metadata operation
modes, whether or not the metadata is present in the selected path.
The block diagrams below show the configuration of the LtRt surround sound downmixer and the LoRo stereo
downmixer.
Figure 5.17 LtRt Surround Sound downmixer Figure 5.18 LoRo Stereo downmixer
Follow Metadata Config:
This section reports on Metadata presence if the Follow Metadata Operating Mode is selected. The four data boxes
below the Metadata status icon indicate the current mode, plus the values in use for Dialnorm, Center Mix Level and
Surround Mix Level.
• The user can choose whether to use the available Dialnorm value in the downmix process by selecting ON or
OFF from the pulldown list at the bottom of the section.