Grass Valley ADX-1901 - Manual (Page 26)

GUIDE TO INSTALLATION AND OPERATION
22 | ADX-1901
Dialnorm: this pulldown selects the dialog normalization level. Select OFF to prevent the downmix from applying the
dialnorm.
[OFF, -12 dBFS, -13 dBFS, -14 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 dB, +6 dB, +4.5 dB, +3 dB, +1.5dB, 0 dB, -1.5 dB, -3 dB, -4.5 dB, -6 dB, Mute]
The block diagram below shows the configuration of the LoRo stereo downmixer.
Surround
Level
Center
Level
+
+
+
+
+
+
+
Ls
Rs
Lo
Ro
L
R
C
Surround
Level
+
LFE
Level
+
+
+
+
LFE
Figure 5-12 Lo/Ro downmixer
5.8 Loudness Panel
The ADX-1901 allows the user to measure the loudness of audio streams passing through it. The measurement
process is flexible:
• All major loudness standards are supported.
• The measurement standards can be customized if desired.
• Up to eight programs can be measured at once.
• Segment markers can be inserted from two triggers.
• Log files of the measurements can be stored externally, for
analysis using Miranda’s Audio Loudness Analyzer.
5.8.1 Loudness | Config panel
Global Config
All loudness measurements performed by this ADX-1901 are
performed on the programs defined in the
Audio Programs Panel ,
using the metering defined and described in that panel.
Global Control
The ADX-1901 can monitor loudness on up to eight programs
specified by the user.
Figure 5-13 Loudness panel – Config tab