Operating the Equipment Locally — Audio Menu
Page 4-50
Reference Guide: evolution 5000 E5780 and E5782 Encoder
ST.RE.E10135.4
4.6.4 Audio
Options
Coding Standard Option
This option controls the audio coding standard. The options available in the audio menu are
dependent on the coding standard selected.
Table 4.16: Coding Standard Options
Availability
Selected Item
Description
Audio A/B
AAC
MPEG Layer 2
MPEG Layer 2 audio coding standard.
3
2
Dolby Digital Pass-
Thru
Pre-encoded (in Dolby Encoder) Dolby Digital or Dolby Digital Plus audio coding
standard. See Annex F, Audio Modes.
3
2
Dolby E Pass-Thru
Dolby E audio coding (pre-encoded in Dolby Encoder). See Annex F, Audio Modes.
3
2
Dolby Digital
Dolby Digital audio coding standard.
3
2
DTS Pass -Thru
Pre-encoded DTS audio coding standard. See Annex F, Audio Modes, for information.
3
2
Linear PCM (Direct)
Linear PCM audio coding standard. See Annex F, Audio Modes, for information.
3
3
MPEG-2 AAC-LC
Used to achieve high audio quality at a low bitrate for 5.1 systems.
2
3
Linear PCM
(Via SRC)
When selected, the audio passes through the sample rate converter before encoding. As
a consequence, any user data bits in the incoming digital audio stream are lost. Audio
passes through the SRC for all input sources i.e. Embedded, Digital, Analogue (though
not really relevant for analogue).
3
2
Table 4.17 shows the options available for each standard in alphabetical order as are the
option descriptions shown in Table 4.18. This will help easy access to information.
Table 4.17: Coding Standard Associated Options
Coding
Standard Comments
Option
Dolby E Pass
-Thru
DTS Pass-Thru
Dolby Digi
tal
Pass-
Thru
MPEG Layer 2
Linear PCM
Dolby Digi
tal
Advance
d A
udi
o
Actual Audio Delay
3
3
3
3
3
Only shown if Auto Lip Sync = On.
Actual Linear Audio
Mode
3
Audio Alignment
3
3
Dolby E Pass–thru only.
Audio Bitrate
3
3
3
For Dolby Digital Pass-Thru only: Status only. Only shown if
the Encoder has a viable source from a Dolby Encoder.
Audio Delay
3
3
3
3
3
Only shown if Auto Lip Sync = Off.
Audio Description
3
3
3
3
3
Only available if the input source is either digital or SDI
embedded.
Audio PID
3
3
3
3
3
Auto Lip Sync
3
3
3
3
Auto Lip Sync is Status only when Use Minimum Delay = On.
It is always On when the Audio Alignment option is set.
Bitstream Mode
3
3
BSID
3
Channel
3
Channel
id
3
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