#------------------------------------------------------------------------------ # $File: dolby,v 1.8 2017/03/17 21:35:28 christos Exp $ # ATSC A/53 aka AC-3 aka Dolby Digital <ashitaka@gmx.at> # from http://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, # Proposed audio/ac3 RFC/4184 !:mime audio/vnd.dolby.dd-raw # 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&0x07 = 0x00 \b, complete main (CM) >5 byte&0x07 = 0x01 \b, music and effects (ME) >5 byte&0x07 = 0x02 \b, visually impaired (VI) >5 byte&0x07 = 0x03 \b, hearing impaired (HI) >5 byte&0x07 = 0x04 \b, dialogue (D) >5 byte&0x07 = 0x05 \b, commentary (C) >5 byte&0x07 = 0x06 \b, emergency (E) >5 beshort&0x07e0 0x0720 \b, voiceover (VO) >5 beshort&0x07e0 >0x0720 \b, karaoke # acmod >6 byte&0xe0 = 0x00 1+1 front, >>6 byte&0x10 = 0x10 LFE on, >6 byte&0xe0 = 0x20 1 front/0 rear, >>6 byte&0x10 = 0x10 LFE on, >6 byte&0xe0 = 0x40 2 front/0 rear, # dsurmod (for stereo only) >>6 byte&0x18 = 0x00 Dolby Surround not indicated >>6 byte&0x18 = 0x08 not Dolby Surround encoded >>6 byte&0x18 = 0x10 Dolby Surround encoded >>6 byte&0x18 = 0x18 reserved Dolby Surround mode >>6 byte&0x04 = 0x04 LFE on, >6 byte&0xe0 = 0x60 3 front/0 rear, >>6 byte&0x04 = 0x04 LFE on, >6 byte&0xe0 = 0x80 2 front/1 rear, >>6 byte&0x04 = 0x04 LFE on, >6 byte&0xe0 = 0xa0 3 front/1 rear, >>6 byte&0x01 = 0x01 LFE on, >6 byte&0xe0 = 0xc0 2 front/2 rear, >>6 byte&0x04 = 0x04 LFE on, >6 byte&0xe0 = 0xe0 3 front/2 rear, >>6 byte&0x01 = 0x01 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