1、 KSKSKSKSKSKSKSK KSKSKS KSKSK KSKS KSK KS KS X ISO/IEC 23003 1 MPEG 1： MPEG KS X ISO/IEC 23003 1:2008 2008 6 30 http:/www.kats.go.krKS X ISO/IEC 23003 1:2008 : e ( ) ( ) () () ( ) : (JTC1/SC29) () ( ) KBS LG () ETRI () KS X ISO/IEC 23003 1:2008 : (http:/www.standard.go.kr) ： ： 2008 6 30 2008-0365 ：
2、e- ：e- (JTC1/SC29) ( 025097262) (http:/www.kats.go.kr). 10 5 , . KS X ISO/IEC 23003 1:2008 i . iii iv 1 1 2 1 3 .1 3.1 .1 3.2 .5 3.3 .5 3.4 .6 3.5 .6 4 MPEG .8 4.1 .8 4.2 10 4.3 11 4.4 MPEG .13 4.5 .14 4.6 15 4.7 MPEG 15 5 18 5.1 18 5.2 .42 6 .60 6.1 60 6.2 MPEG 81 6.3 / 83 6.4 MPEG .86 6.5 M1, M2,
3、M3 .109 6.6 131 6.7 (STP).135 6.8 (GES).140 6.9 .145 6.10 MPEG 155 6.11 MPEG 167 7 184 7.1 .184 7.2 MPEG 184 7.3 PCM MPEG 188 A( ) .195 A.1 195 A.2 .217 KS X ISO/IEC 23003 1:2008 ii B( ) HRTF ( ).240 B.1 HRTF QMF 240 C( ) HRTF ( ).243 C.1 HRTF ( ) QMF 243 D( ) .245 E( ) HRFT .246 F( ) 247 F.1 .247 F
4、.2 - 247 F.3 .247 F.4 2 1 (R-OTT) .248 F.5 3 2 (R-TTT)249 F.6 251 F.7 252 F.8 252 F.9 PCM MPEG .256 G( ) MPEG .258 G.1 258 G.2 258 G.3 S3AC 259 H( ) 260 H.1 .260 H.2 260 H.3 265 I( ) MPEG .272 I.1 .272 I.2 .272 J( ) .276 KS X ISO/IEC 23003 1:2008 .277 KS X ISO/IEC 23003 1:2008 iii ISO/IEC 23003 1 IS
5、O/IEC JTC 1 , , SC 29 . ISO/IEC 23003 MPEG . 1： MPEG KS X ISO/IEC 23003 1:2008 iv 2007 1 ISO/IEC 23003 1, Information technology MPEG audio technologies Part 1： MPEG Surround , . . . . MPEG , . . (ISO) (IEC) . ISO IEC , . . ISO IEC . J . J . ISO IEC . KS X ISO/IEC 23003 1:2008 MPEG 1： MPEG Informati
6、on technology MPEG audio technologies Part 1： MPEG Surround 1 MPEG (Surround) ( , Spatial Audio Coding, SAC) , M N N . M . N M N . . . (matrix surround) . . 2 . . ( ) . KS X ISO/IEC 11172 3_2001, 1.5 Mbps (MPEG 1) 3： KS X ISO/IEC 13818 7, 7： (AAC) KS X ISO/IEC 14496 1, (MPEG 4) 1： KS X ISO/IEC 14496
7、 3, 3： KS X ISO/IEC 14496 4, 4： ISO/IEC 13818 3： 1998, Information technology Generic coding of moving pictures and associated audio information Part 3： Audio 3 3.1 KS X ISO/IEC 23003 1:2008 2 . 3.1.1 (channel) 1 1 . 1 L Left Front R Right Front C Center Front LFE Low Frequency Enhancement Ls Left S
8、urround Rs Right Surround Lc Left Front Center Rc Right Front Center Lsr Rear Surround Left Rsr Rear Surround Right Cs Rear Center Lsd Left Surround Direct Rsd Right Surround Direct Lss Left Side Surround Rss Right Side Surround Lw Left Wide Front Rw Right Wide Front Lv Left Front Vertical Height Rv
9、 Right Front Vertical Height Cv Center Front Vertical Height Lvr Left Surround Vertical Height Rear Rvr Right Surround Vertical Height Rear Cvr Center Vertical Height Rear Lvss Left Vertical Height Side Surround Rvss Right Vertical Height Side Surround Ts Top Center Surround LFE2 2 Low Frequency Enh
10、ancement 2 KS X ISO/IEC 23003 1:2008 3 CTsRc R RwLcLLwRvLvRss RvssRsRsdRvrRsrCsLsrLsdLsLssLvssCvrLvrCvLFE2LFE 1 3.1.2 (Channel Level Difference, CLD) 3.1.3 CLD (CLD band) (CLD) 3.1.4 (Channel Prediction Coefficient, CPC) 2 3 3.1.5 CPC (CPC band) (CPC) 3.1.6 (hybrid filterbank) QMF . 3.1.7 (hybrid fi
11、ltering) QMF . KS X ISO/IEC 23003 1:2008 4 3.1.8 (hybrid subband) QMF / QMF . 3.1.9 (Inter Channel Correlation, ICC) (coherence) 3.1.10 ICC (ICC band) (ICC) 3.1.11 NA 3.1.12 M N M (M N M configuration) N M . 5 1 5 5 2 5 . 3.1.13 OTT (OTT box) (one-to-two) 3.1.14 (parameter band) 3.1.15 (parameter ba
12、nd border) 3.1.16 (parameter time slot) 3.1.17 (parameter set) 3.1.18 (parameter subset) OTT TTT 3.1.19 (processing band) KS X ISO/IEC 23003 1:2008 5 3.1.20 QMF (QMF bank) 3.1.21 QMF (QMF subband) QMF 3.1.22 SAC (Spatial Audio Coder, SAC) 3.1.23 SAC (SAC frame) SpatialFrame() 3.1.24 (time segment) 3
13、.1.25 (time slot) SAC QMF . 3.1.26 TTT (TTT box) (two-to-three) 3.2 . (： vector). (： M). (： variable). func(x) . R . C . , (pseudo-code) , , , . 3.3 3.3.1 KS X ISO/IEC 23003 1:2008 6 X* X . y x , x . x , x . y INT(x) . x x . y log2(x) x 2 . y log10(x) x 10 . y min(,) . y max(,) . y mod(x, z) y (x n*
14、z) n ceil(x/z) 1 . y round(x) . y sign(x) x x 1, 1, 0 0 . 3.3.2 y sort(x) x y . y length(x) x . 3.4 0 3.5 am(l) l ( ) QMF ch DATD OTT CLD , , Mproc 3 DCLD OTT CLD , , Mproc 3 DICC OTT TTT ICC , , Mproc 3 DCPC_1 TTT 1 CPC , , Mproc 3 DCPC_2 TTT 2 CPC , , Mproc 3 DCLD_1 OTT 1 CLD , , Mproc 3 DCLD_2 OT
15、T 2 CLD , , Mproc 3 QDYYYDYYY 3 DYYY Mpar . YYY CLD, ICC, CPC_1, CPC_2, CLD_1, CLD_2 ATD . envRatioX X GES Fs KS X ISO/IEC 23003 1:2008 7 G , , Mproc 3 GQ , , Mpar 3 idxXXX(,) 3 XXX CLD, ICC, CPC_1, CPC_2, CLD_1, CLD_2 ATD . K , K 71 Kc MPEG QMF , Kc 8 L Mproc , Mproc 28 cMproc MPEG , cMproc 12 Mpar
16、bsFreqRes MQMF6.3.3 QMF mresPar mresProc mtttLowProc TTT mtttHighProc TTT mn,1M n m , (pre-matrix) mn,2M n m , (mix-matrix) rm(l) l MPEG QMF m reset 1 . 0 . Sproc (smoothing) sdelta t L , CLD, ICC, CPC . Tree(ch,) 3 , (Arbitrary Tree) , OTT . Treesign(ch,) 3 , (Arbitrary Tree) , OTT (1) ( 1) . Treed
17、epth(ch,) (Arbitrary Tree) , OTT TreeoutChan(ch) numOutChan . vn,m n m (pregain) wn,m n m , (pre gain) , mn,diffusew n m (shaping) KS X ISO/IEC 23003 1:2008 8 mn,directw n m (shaping) , (pregain) , xn,m n m ( ) yn,m n m mn,diffusey n m mn,directy n m 4 MPEG 4.1 MPEG (SAC) . . , MPEG . (CLD) / (ICC)
18、, , . , . MPEG 27 . . . , , . , , (parametric) . . , MPEG / (scale) . KS X ISO/IEC 23003 1:2008 9 TransparencyMPEG SurroundLegacy matrixed surroundMulti-channelqualityMPEG Surround, spatial parameter bitrate 2 MPEG . , . , 5.1 . , MPEG ( ) ( ) . , MPEG “ ” “ ” . , . , , . , . , . 3 5.1 . MPEG “ ” “ ”, . SACdown-mixprocessingStereo CoderStereo DecoderStereosignalAncillary dataSACup-mixprocessingStereosignalAncillary dataOriginalReconstructed original 3 MPEG .
