LG 32LN575S User Manual page 61

To use Digital Sound Out
❐
SMART ➾
Speaker(Optical/HDMI ARC)
Sets up Digital Sound
Item
Auto
PCM
Settings ➙ SOUND
Output.
Sound Input
MPEG
Dolby Digital
Dolby Digital Plus
All
➙ Sound Out
➙ Digital Sound Out
Digital Sound output
PCM
Dolby Digital
Dolby Digital
PCM
➙ External