Samsung UA48J5000AK Instruction Manual page 31

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Audio Format
(Depending on the country and model)
When sound is emitted from both the main speaker and the audio receiver,
a sound echo may occur due to the decoding speed difference between
the main speaker and the audio receiver. In this case, use the TV Speaker
function.
N
Audio Format
Dolby digital sound is only available when connecting an external speaker
through an optical cable.
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Audio Description
This function handles the Audio Stream for the AD (Audio Description) which
is sent along with the Main audio from the broadcaster.
Audio
Volume: Adjust the audio description volume.
option may differ depending on the broadcast. 5.1ch
(not available in all locations)
Description: Turn the audio description function on or off.
English
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