Audio Component
The parameters listed in Table 5.83 are available on the Component tab of the
Properties widget on the Service Configuration page when an audio component is
selected in the Outputs widget. The same parameters can be accessed through the
Output/<output name>/Transport Stream ID: <n>/Service List/<service
name>/Component List/<component name> menu on the front panel.
Table 5.83 Audio Component Parameters
Parameter Values Description
PID 32 to 8190 Sets the packet identifier associated with the component.
Bit Rate Weighting Fixed
Specifies the weight associated to the component in the
Bit Rate Tracking algorithm. For audio stream, this is Fixed
and read only.
Dolby Metadata Presets
Four custom Dolby Metadata Presets can be configured in the Advanced Setup tab of the
Device Configuration page. To set the preset options, in the Advanced Video Processor
Settings drill down to Encoder > Slots > Slot <n> - CE-x Analogue >CE-x Analogue >
Audio Module > Dolby Metadata Presets, and select the preset you want to modify.
Alternatively, the settings can be reached through the front panel under Advanced/CE-x
Analogue/Audio Module/Dolby Metadata Presets. Any of these presets can then be
applied to any audio channel encoding audio in the Dolby Digital format. The table lists the
parameters for each preset.
Table 5.84 Dolby Metadata Preset Parameters
Parameter Values Description
Preset name Name of the preset (for user information)
Dialogue
normalization level
-31 to -1 dB
Used by a decoder to determine the level of adjustment
required to achieve the set level.
Bitstream mode
Main audio service: complete main, music and
effects, Associated service: visually impaired,
Associated service: hearing impaired,
Associated service: dialogue, Associated
service: commentary, Associated service:
emergency, Associated service: visually
impaired, Associated service: karaoke/voiceover
Flags the type of service in the bitstream.
Line mode
compression profile
None, Film Standard, Film Light, Music
Standard, Music Light, Speech
Alters the dynamic range for line output.
RF mode compression
profile
None, Film Standard, Film Light, Music
Standard, Music Light, Speech
This alters the dynamic range for RF output. The overall
level is raised by 11dB.
Center mix level 0.707 (-3.0 dB), 0.595 (-4.5 dB), 0.500 (-6.0 dB)
Indicates the downmix level when there is no centre
speaker. This is applied to left and right channels only.
Surround mix level 0.707 (-3.0 dB), 0.500 (-6.0 dB), 0 (-inf dB)
Surround downmix level for the front left and right
channels when consumer has no surround speakers.
Dolby Surround mode Not Indicated, Not Encoded, Encoded
Flags if a two channel encoded stream contains
information for a Dolby Pro-logic decode (Lt/Rt)
Audio production
information exists
Off, On
This indicates whether the Mixing Level and Room Type
parameters exist within the bit-stream.
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