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#------------------------------------------------------------------------------ # $File: dolby,v 1.5 2009/09/19 16:28:08 christos Exp $ # ATSC A/53 aka AC-3 aka Dolby Digital <ashitaka@gmx.at> # from www.atsc.org/standards/a_52a.pdf # corrections, additions, etc. are always welcome! # # syncword 0 beshort 0x0b77 ATSC A/52 aka AC-3 aka Dolby Digital stream, # fscod >4 byte&0xc0 0x00 48 kHz, >4 byte&0xc0 0x40 44.1 kHz, >4 byte&0xc0 0x80 32 kHz, # is this one used for 96 kHz? >4 byte&0xc0 0xc0 reserved frequency, # >5 byte&7 = 0 b, complete main (CM) >5 byte&7 = 1 b, music and effects (ME) >5 byte&7 = 2 b, visually impaired (VI) >5 byte&7 = 3 b, hearing impaired (HI) >5 byte&7 = 4 b, dialogue (D) >5 byte&7 = 5 b, commentary (C) >5 byte&7 = 6 b, emergency (E) # acmod >6 byte&0xe0 0x00 1+1 front, >6 byte&0xe0 0x20 1 front/0 rear, >6 byte&0xe0 0x40 2 front/0 rear, >6 byte&0xe0 0x60 3 front/0 rear, >6 byte&0xe0 0x80 2 front/1 rear, >6 byte&0xe0 0xa0 3 front/1 rear, >6 byte&0xe0 0xc0 2 front/2 rear, >6 byte&0xe0 0xe0 3 front/2 rear, # lfeon (these may be incorrect) >7 byte&0x40 0x00 LFE off, >7 byte&0x40 0x40 LFE on, # >4 byte&0x3e = 0x00 b, 32 kbit/s >4 byte&0x3e = 0x02 b, 40 kbit/s >4 byte&0x3e = 0x04 b, 48 kbit/s >4 byte&0x3e = 0x06 b, 56 kbit/s >4 byte&0x3e = 0x08 b, 64 kbit/s >4 byte&0x3e = 0x0a b, 80 kbit/s >4 byte&0x3e = 0x0c b, 96 kbit/s >4 byte&0x3e = 0x0e b, 112 kbit/s >4 byte&0x3e = 0x10 b, 128 kbit/s >4 byte&0x3e = 0x12 b, 160 kbit/s >4 byte&0x3e = 0x14 b, 192 kbit/s >4 byte&0x3e = 0x16 b, 224 kbit/s >4 byte&0x3e = 0x18 b, 256 kbit/s >4 byte&0x3e = 0x1a b, 320 kbit/s >4 byte&0x3e = 0x1c b, 384 kbit/s >4 byte&0x3e = 0x1e b, 448 kbit/s >4 byte&0x3e = 0x20 b, 512 kbit/s >4 byte&0x3e = 0x22 b, 576 kbit/s >4 byte&0x3e = 0x24 b, 640 kbit/s # dsurmod (these may be incorrect) >6 beshort&0x0180 0x0000 Dolby Surround not indicated >6 beshort&0x0180 0x0080 not Dolby Surround encoded >6 beshort&0x0180 0x0100 Dolby Surround encoded >6 beshort&0x0180 0x0180 reserved Dolby Surround mode

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