Grass Valley SME-1901 v.1.20 - Manual (Page 19)

GUIDE TO INSTALLATION AND OPERATION
SME-1901 / 1911 | 15
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]
The block diagrams below show the configuration of the LtRt surround sound downmixer and the LoRo stereo
downmixer.
Figure 5-6 LtRt Surround Sound Downmixer
Surround
Level
Center
Level
+
+
+
+
+
+
+
Ls
Rs
Lo
Ro
L
R
C
Surround
Level
+
LFE
Level
+
+
+
+
LFE
Figure 5-7 LoRo Stereo Downmixer
+
+
+
+
–
+
+
+
Surround
Level
L
C
R
LFE
Ls
Rs
Lt
Rt
+
+
Center
Level
+
+
LFE
Level
+
+