Samsung UN40D5550RF E-Manual page 58

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Multi-Track Sound (MTS)
(analog channels only)
Select an option using the up and down arrow keys, and the press ENTERE.
Mono: Choose for channels that are broadcasting in mono or if you are having
difficulty receiving a stereo signal.
Stereo: Choose for channels that are broadcasting in stereo.
SAP: Choose to listen to the Separate Audio Program, which is usually a
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foreign-language translation.
Depending on the program being broadcast, you can listen to Mono,
N
Stereo, or SAP.
t
English
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