: A voice or tone should play in each speaker individually (Left, Center, Right, Left Surround, Right Surround, and Sub/LFE). Phase/Polarity Check
True "Dolby Digital 5.1" requires a file encoded with 6 discrete channels (Left, Center, Right, Left Surround, Right Surround, LFE/Subwoofer). Standard stereo videos (even in high quality) will NOT produce 5.1 sound. This guide focuses on finding genuine 5.1 test files. dolby digital 51 surround sound test video download free