Samsung PS43D450A2W E-Manual page 70

Broadcast Audio Options
■
● Audio Language
(digital channels only)
Change the default value for audio languages.
The available language may differ depending on the broadcast.
N
● Audio Format
(digital channels only)
◀
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
English
TV Speaker function.
▶