
NOTE :
By default the PMT descriptor used for Dolby Digital is that defined by DVB. However via the Audio Module/Advanced
settings it is possible to change this to be the descriptor defined by ATSC.
DD Pass Thru Passthrough of pre-encoded Dolby Digital Audio
DolbyE Pass Thru Passthrough of pre-encoded DolbyE Audio
LPCM Pass Thru Passthrough of uncompressed Audio (Linear PCM)
Audio Descr Service
MPEG1 Layer II encode of a mono audio track that describes
action in the video plus a control track
Coding Standard Parameter Description
Dolby Digital
Bit rate Bit rate of audio stream
Coding Mode Defines the audio mode (mono/stereo etc)
Metadata Preset The number of the metadata preset to be applied
Embedded PCR
Sets PCR to be embedded in the audio stream or on a
separate PID
AU Ctrl
Controls whether AU information is included in the output
audio stream.
Lipsync Offset Configure a delay to the audio to improve A/V synchronisation
Language Sets the language descriptor
MPEG-1 Layer II
Bit rate Bit rate of audio stream
Coding Mode Defines the audio mode (mono/stereo etc)
Embedded PCR
Sets PCR to be embedded in the audio stream or on a
separate PID
AU Ctrl
Controls whether AU information is included in the output
audio stream.
Lipsync Offset Configure a delay to the audio to improve A/V synchronisation
Language Sets the language descriptor
MPEG Version Configure MPEG-1 or MPEG-2 to be signalled.
Copyright Indicates if the material is copyright protected.
Original Indicates if source is the original or a copy
De-Emphasis
To meet the MPEG-1 Layer 2 encoding algorithm specification
the audio must not have pre-emphasis applied. If the input
signal does have pre-emphasis applied, a de-emphasis filter
must be applied prior to encoding.
AAC
Bit rate Bit rate of audio stream
Coding Mode Defines the audio mode (only stereo supported).
Encapsulation MPEG ADTS or MPEG-4 LATM/LOAS encapsulation
Temporal Noise Shaping Enables or disables this feature
SBR Signalling Can be off, implicit or explicit.
AU Ctrl
Controls whether AU information is included in the output
audio stream.
Lipsync Offset Configure a delay to the audio to improve A/V synchronisation
Language Sets the language descriptor
HE-AAC
Bit rate Bit rate of audio stream
Coding Mode Defines the audio mode (only stereo supported).
Encapsulation HE-AAC only supports MPEG-4 LATM/LOAS encapsulation
Temporal Noise Shaping Enables or disables this feature
SBR Signalling Can be off, implicit or explicit.
Embedded PCR
Sets PCR to be embedded in the audio stream or on a
separate PID
AU Ctrl
Controls whether AU information is included in the output
audio stream.
Lipsync Offset Configure a delay to the audio to improve A/V synchronisation
Language Sets the language descriptor
DD Pass Thru
Embedded PCR
Sets PCR to be embedded in the audio stream or on a
separate PID
Lipsync Offset Configure a delay to the audio to improve A/V synchronisation
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