APPEAR AS
Confidential
237/352
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L/R : left and right
front
channels
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C : centre channel
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LFE : low frequency effects channel
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Ls/Rs : left and right
surround
channels
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Lb/Rb : left and right
back
channels
Encoder
Type
Dolby Digital, Dolby Digital Plus, MPEG-1 , AAC, HE-AACv1, HE-AACv2
Channel Mode
Output channel format. Available choices depend on selected Source Mode
and Encoder Type
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Stereo
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Mono
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Dual Mono
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3/2 +LFE (5.1)
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3/4+LFE (7.1)
If Source Mode is larger than Encoder Mode, then down-mixing is
automatically performed. Dolby Digital Plus supports up-mixing from Source
Mode 3/2 +LFE (5.1) to Encoder Mode 3/4+LFE (7.1).
Bitrate
Bitrate of compressed audio, available choices depend on Encoder Type and
Mode.
Container
ADTS or LATM (Encoder Type AAC, HE-AACv1 and HE-AACv2 only)
Bitstream Mode
Dolby Digital/Dolby Digital Plus audio service description
Dialogue
Normalization
Dolby Digital/Dolby Digital Plus setting used for aligning the output level
based on the set level of dialogue. Important to configure correctly for current
source content to achieve an even output level across services.
Signalling
PID
The PID value of the compressed audio stream.
Language
Three letter audio code used in PMT. Example “nor”, “eng”
Audio Type
Audio type signalled in PMT
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Normal
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Clean Effect
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Hearing Impaired
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VI Commentary
More details can be found in Ref. ITU-T Rec. H.222.0
Advanced (All coder types)