Cobalt Co9992-4ENC-4K-HEVC Software-Defined Broadcast Encoder - Manual (Page 71)

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These controls are not available for Dolby Pass-through.

Audio Type: determines the audio type in the PMT audio descriptor. This setting has no
actual impact on how the audio is encoded; it only affects its description in the PMT. If
the output protocol is RTMP, this control is not present since RTMP does not use the
transport stream container. The choices are:
o Undefined: no further information. This is the most common setting.
o Clean Effects: indicates that the audio has no language.
o Hearing Impaired: indicates that the audio is prepared for the hearing impaired.
o Visual Impaired Commentary: indicates that the audio is prepared for the
visually impaired viewer.
Audio Configuration Advanced Tab – MPEG-1 Layer II
The MPEG-1 Layer II advanced parameters are shown below.

CRC: Enables/Disables CRC insertion in the audio elementary stream. This is normally
left disabled (CRC off).

Original/Copy: Controls the state of the Original/Copy flag in the audio elementary
stream. This setting does not affect the actual audio encoding.

Copyright: Controls the state of the Copyright flag in the audio elementary stream. This
setting does not affect the actual audio encoding.

Emphasis: Controls the state of the Emphasis flags in the audio elementary stream. This
setting does not affect the actual audio encoding. The available values are None ,
50/15 us , and ITU-T J.17 .
Audio Configuration Advanced Tab – AAC
The AAC advanced parameters are shown below.