Sharp LC 47SB57UT Operation Manual page 18

Direct Button Operation
MTS/SAP
■ MTS/SAP stereo mode
You can enjoy Hi-Fi stereo sound or SAP broadcasts
when available.
Stereo broadcasts:
SAP broadcasts:
If stereo sound is difficult to hear.
MTS/SAP
Examples: when receiving MTS and SAP
MAIN
■ Digital broadcasting audio mode
MTS/SAP
Example: when receiving Digital broadcasting
STEREO (Audio1) STEREO (Audio2)
SURROUND (Audio3)
16
SAP
Closed Captions and Digital Closed Captions
DISPLAY
1. DISPLAY
2. CC.
CC