Audio - LG OL55D Owner's Manual

System Setting 23

Audio

DRC (Dynamic Range Control)
Make the sound clear when the volume is turned
down and prevent a sudden sound increase (Dolby
Digital only). Set to [On] for this effect.
HD AV Sync
3
Sometimes Digital TV encounters a delay between
picture and sound. If this happens you can
compensate by setting a delay on the sound so
that it effectively 'waits' for the picture to arrive:
this is called HD AV Sync. Use W/S on the remote
control to scroll up and down through the delay
amount, which you can set at anything between 0
and 300ms.