BBG1002UDX-OM (V1.5)
BBG-1002-UDX PRODUCT MANUAL
1-17
Introduction
BBG-1002-UDX Functional Description
(Option
+CQS)
. Clean and Quiet Switching allows SDI input
selection to be changed from one source to another while ducking audio
during controlled input video switching transitions to provide silence between
input switches. The cross-fade is queued for the next available RP168 switch
line following the switch command.
Note:
• Clean audio switching is assured only for intentional, controlled switches via
user control. Clean audio switching cannot be assured for failover switches.
• Clean switching requires that both SDI signals (switch from and switch to)
be stable and present.
• Clean audio switching function is designed for PCM audio. This function
does not assure clean decoded audio when switching from/to Dolby or other
non-PCM audio.
Audio Down Mix Function
(See Figure 1-7.) The Audio Down Mixer function provides for the selection
of any five embedded channels serving as Left (
L
), Right (
R
), Center (
C
), Left
Surround (
Ls
), and Right Surround (
Rs
) individual signals to be multiplexed
into stereo pair Down Mix Left (
DM-L
) and Down Mix Right (
DM-R
). The
resulting stereo pair
DM-L
and
DM-R
can in turn be routed to any embedded
audio pair as desired (or de-embedded to an AES or analog audio output).
Figure 1-7 Audio Down Mix Functional Block Diagram with Example Sources
Flex Buses.
For both input and output nodes before and after the device
internal buses, flex buses provide flexible-structure mixer in which any of 16
summing nodes (
Flex Mix Bus A
thru
Flex Mix Bus P
) can receive any device
audio input, thereby allowing several customizable mixing schemes.
Similarly, any of the 16 device internal bus signals can be applied to an output
flex bus mixer. The output flex bus allows cross-sourcing from both
Path 1
and
Path 2
embedded internal Audio Bus sources to the Path 1 and Path 2
discrete output audio crosspoints.
Text-To-Speech.
(Option
+TTS
) Cobalt Digital
+TTS
is a
complete 21CVAA digital text-to-speech generation / audio insertion solution
for embedded and discrete audio systems.
+TTS
is available as a software
option for new BBG-1002-UDX units. For field upgrade, the unit must be
returned to the factory for option installation.
DM-L
L
R
C
Ls
Rs
DM-R
Emb Ch 1
Emb Ch 2
Emb Ch 3
Emb Ch 5
Emb Ch 6
Embed Ch 1 - Ch 16
