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BBG-1002-UDX Functional Description
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BBG-1002-UDX PRODUCT MANUAL
BBG1002UDX-OM (V1.5)
(See Figure 1-6.) The audio processing subsection is built around a device
internal 16-channel bus. This 16-channel bus receives inputs from an input
routing crosspoint that routes de-embedded (and discrete AES and analog
audio inputs) over the 16-channel device bus. Correspondingly, at the output
end of the 16-channel bus is an output routing crosspoint that in turn
distributes the 16-channel bus signals to embedded (and discrete AES and
analog audio) outputs.
An Input Audio Status display shows the presence and peak level of each
input audio channel received by the device. For digital audio inputs, payload
is identified (PCM or data such as Dolby
®
Digital or E), as well as sample rate
for discrete AES inputs. Discrete AES inputs can have sample rate conversion
applied to align these inputs with the output timing (received sample rates
from 32 kHz to 96 kHz are supported). An audio silence check can detect, on
any channel, audio that persists below a specified loudness exceeding a
configurable time span. This check can propagate an alert to the device
Presets function to invoke audio routing and other changes.
As such, the audio subsection provides a full crosspoint between all supported
audio inputs and output formats.
In addition to SDI embedded audio channel sources, analog pair inputs and
coaxial AES inputs are available on certain models. For digital audio inputs,
payload is identified (PCM or data such as Dolby
®
Digital or E), as well as
sample rate for discrete AES inputs. Discrete AES inputs can have sample
rate conversion applied to align these inputs with the output timing in cases
where AES audio is not synchronous with input video. This model also
provides an analog audio output pair and a coaxial AES output which can
receive any embedded channel.
Figure 1-6 Basic Audio Processing Block Diagram
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AES
Rx/SRC
Input Routing
Internal
Bus
Routing/Gain/
Mute/Invert
Controls
Analog
Audio
ADC
Audio
Meters
AES IN
(1-2)
AN-AUD
IN (1-2)
Audio
Delay
Offset
Control
Internal Bus Controls
Ref
Dolby E
Alignment
Control
Output Routing
Routing/Gain/
Mute/Invert
Controls
Audio
Meters
AES
Tx
Analog
Audio
DAC
AES OUT
(1-2)
AN-AUD
OUT (1-2)
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1002AUD V1.0LB94
Note:
AES and Analog Audio I/O present
only on model BBG-1002-AV-EMDE
Downmix
