◀ ▶● Dolby Digital Comp (Line / RF): This function minimizes signal disparitybetween a dolby digital signal and a voice signal (i.e. MPEG Audio, HE-AAC,ATV Sound).N Select Line to obtain dynamic sound, and RF to reduce the differencebetween loud and soft sounds at night time.Line: Set the output level for signals greater or less than -31dB (reference) toeither -20dB or -31dB.RF: Set the output level for signals greater or less than -20dB (reference) toeither -10dB or -20dB.English