Dolby AC-3 LD Insert (Forrest Gump)
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This was included in the LaserDisc jacket of Forrest Gump to explain the, then new, Dolby AC-3 system. Prior to AC-3 on LaserDisc, the best that could be done was 2 channels of digital sound and 2 channels of analog FM using CX Noise Reduction. Pioneer's preferred name for the AC-3 format on LaserDisc was "Laser Surround Digital" which is a stupid name