Operating instructions

GUIDE TO INSTALLATION AND OPERATION
FRS-1801 | 23
[+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 shows the configuration of the LtRt surround sound downmixer and the LoRo
stereo downmixer.
+
+
+
+
–
+
+
+
Surround
Level
L
C
R
LFE
Ls
Rs
Lt
Rt
+
+
Center
Level
+
+
LFE
Level
+
+
Figure 3.21 LtRt Surround Sound downmixer
Figure 3.22 LoRo Stereo downmixer
• Normalization: the downmix levels can be normalized to provide normalized levels according to the
downmix levels used in manual mode or AUTO mode.
Status tab
The Status tab reports the type of audio present at
the input and the Dolby-E alignment.
Audio Type Status:
• PCM – the audio channel carries PCM
audio (orange)
• Dolby E – the audio channel carries Dolby E
encoded audio (blue)
• AC3 – the audio channel carries Dolby
Digital (AC-3) encoded audio (violet)
• NPCM – the audio channel carries non-
PCM other than Dolby E or Dolby Digital
(AC-3) (yellow).
Figure 3.23 Audio Processing – Status tab