GOST R 54712-2011 Digital Sound Broadcasting Sound broadcasting signals- coding with redundancy reduction for digital communication MPEG-2 a part III (MPEG-2 audio)《数字声音广播 数字通信冗余度压.pdf

《GOST R 54712-2011 Digital Sound Broadcasting Sound broadcasting signals- coding with redundancy reduction for digital communication MPEG-2 a part III (MPEG-2 audio)《数字声音广播 数字通信冗余度压.pdf》由会员分享，可在线阅读，更多相关《GOST R 54712-2011 Digital Sound Broadcasting Sound broadcasting signals- coding with redundancy reduction for digital communication MPEG-2 a part III (MPEG-2 audio)《数字声音广播 数字通信冗余度压.pdf（110页珍藏版）》请在麦多课文档分享上搜索。

1、 5471220112014 MPEG-2 III (MPEG-2 audIo)ISO/IEC 13818=3:1998(NEQ ) 5471220111 - - - ( )2 480 3 - 13 2011 . 873-4 / 13818-3:1998 . - . III. (ISO/IEC 138183:1998 Information technology Generic coding of moving pictures and associated audio information Part III. Audio) 15 1.02012 ( 8). ( 1 ) , -. () nu

2、llnullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnullnullnullnullnullnullnullnullnullnull null . , nullnullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnullnullnullnull nullnull nullnullnullnullnullnullnullnullnullnullnullnull nullnullnullnullnullnullnullnullnullnullnullnul

3、lnull null nullnullnullnullnullnullnullnullnullnull (gost.ru) , 2014 nullnullnullnullnullnullnullnullnull nullnullnull nullnullnullnullnullnullnullnull , II 5471220111 12 23 , , 23.1 23.2 .33.3 .64 .74.1 54711 74.2 54711 13 () .57 () 60 () 64 () .73 () .104 106III 5471220111 54712201 MPEG-2 III (MPE

4、G-2 audIo)Digital sound broadcasting.Coding of sound broadcasting signals with redundancy reduction for transfer on digital communication channels. MPEG-2 part III (MPEG-2 audio) 201307011 ( 64 / ), , 2, I, II III 54711 (Fs): 16 , 22,05 24 . 7,5 , 10,3 11,25 , - ( 52742 53537)., 54711 , , - . , MPEG

5、1 audio ID . -, , , . , 28376, 27667 . - -, 20 000 . , - ( 20 000 ), - , . , , - , . , , - - ( 52742 53537). , , - -, Hi-Fi. , ( ), , :CATV ;CDAD ;DAB ;DVD ;ENG ( );HDTV ;IPC (, . .);ISM ( . .). 54712 201122 : 54711 2011 . - . MPEG-1 III (MPEG-1 audio) 52742 2007 . . - . 53537 2009 . ( 20 20000 ). 2

6、7667 88 -. 28376 89 -. . - , 1 , - . , , . , - , (). , , , , , . , , , , .3 , , 3.1 :3.1.1 : , - .3.1.2 : , .3.1.3 : - , .3.1.4 (LFE): .3.1.5 : , (L R L, R C) .3.1.6 : , , -, , .3.1.7 : .3.1.8 : .3.1.9 : , - .3.1.10 : , - .3.1.11 : , , , , .3.1.12 : , , . - 54711, . , .3.1.13 : , - 54711 . 547122011

7、33.1.14 : .3.1.15 : , - .3.1.16 : , , , -, 54711. - () .3.1.17 : , .3.1.18 : - .3.1.19 : - , , , -.3.1.20 : n .3.1.21 : , , .3.1.22 : , - . () , .3.1.23 : , - .3.2 3.2.1 , , . . - . .+ . ( ) ( ).+ . .* . ./ . , 7/4 7/4 -7/4 7/-4 ./ . - , . , 3/2 , 3/2 .DIV -.| | | x | = x, x 0| x | = 0, x = 0| x | =

8、 x, x 0;Sign (x) = 0, x = 0;Sign (x) = -1, x = . . 4) / 5slen2 = (scalefac_compress 4) % 5slen3 = (scalefac_compress % 16) 2slen4 = scalefac_compress % 4preflag = 0block_type mixed_block_flag nr_of_sfb1 nr_of_sfb2 nr_of_sfb3 nr_of_sfb400,01,11 x 6 5 5 510 0 9 9 9 910 1 6 9 9 9if (400 2) / 5slen2 = (

9、scalefac_compress400) 2) % 5slen3 = (scalefac_compress400) % 4slen4 = 0preflag = 0block_type mixed_block_flag nr_of_sfb1 nr_of_sfb2 nr_of_sfb3 nr_of_sfb400,01,11 x 6 5 7 310 0 9 9 12 610 1 6 9 12 6if (500 1if (int_scalefac_compress 4slen2 = (int_scalefac_compress180) % 16) 2slen3 = (int_scalefac_compress180) % 4slen4 = 0preflag = 0 54712201113block_type mixed_block_flag nr_of_sfb1 nr_of_sfb2 nr_of_sfb3 nr_of_sfb400,01,11 x 6 6 6 310 0 12 9 9 610 1 6 12 9 6if (244 = int_scalefac_compress) - (CRC), 16 , ( );- , II (BAL), - (SCFSI), (SCF) ;- , - , .