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1、ICS 35.040 Ref. No. ISO/IEC 14496-3:2005/Cor.3:2008(E) ISO/IEC 2008 All rights reserved Published in Switzerland INTERNATIONAL STANDARD ISO/IEC 14496-3:2005 TECHNICAL CORRIGENDUM 3 Published 2008-04-15 INTERNATIONAL ORGANIZATION FOR STANDARDIZATION ORGANISATION INTERNATIONALE DE NORMALISATION INTERN
2、ATIONAL ELECTROTECHNICAL COMMISSION COMMISSION LECTROTECHNIQUE INTERNATIONALE Information technology Coding of audio-visual objects Part 3: Audio TECHNICAL CORRIGENDUM 3 Technologies de linformation Codage des objets audiovisuels Partie 3: Codage audio RECTIFICATIF TECHNIQUE 3 Technical Corrigendum
3、3 to ISO/IEC 14496-3:2005 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. -,-,- 1 In subclause 10.5, replace: Table 10.1 Syntax of Audio_Frame() Syntax Bits Mnemonics DSTSpecificConf
4、ig( channelConfiguration ) if (DSD_Coded) DSD() DSD if (DST_Coded) DST() DST with: 10.5.1 Decoder Configuration (DSTSpecificConfig() Table 10.1 Syntax of DSTSpecificConfig() Syntax Bits Mnemonics DSTSpecificConfig ( channelConfiguration ) DSDDST_Coded 1 UiMsbf N_Channels 14 UiMsbf reserved 1 UiMsbf
5、10.5.2 Bitstream Payload Table 10.2 Syntax of Audio_Frame() Syntax Bits Mnemonics Audio_Frame() if (DSDDST_Coded = 0) DSD() DSD else DST() DST ISO/IEC 2008 All rights reserved ISO/IEC 14496-3:2005/Cor.3:2008(E) and renumber following tables as necessary. -,-,- ISO/IEC 14496-3:2005/Cor.3:2008(E) 2 In
6、 subclause 10.5, replace: Same_Segmentation 1 with: Same_Segmentation 1 BsMsbf In subclause 10.5, replace: Same_Segm_For_All_Channels 1 with: Same_Segm_For_All_Channels 1 BsMsbf In subclause 10.5, replace: Syntax Bits Mnemonics Channel_Segmentation() Nr_Of_Segments = 1 Start1 = 0 End_Of_Channel_Segm
7、 1 while(End_Of_Channel_Segm = 0) if (Resolution_Read = false) Resolution 13 UiMsbf Resolution_Read = true Scaled_LengthNr_Of_Segments 113 UiMsbf Segment_LengthNr_Of_Segments = Resolution * Scaled_LengthNr_Of_Segments StartNr_Of_Segments+1 = StartNr_Of_Segments + Segment_LengthNr_Of_Segments Nr_Of_S
8、egments+ End_Of_Channel_Segm 1 Segment_LengthNr_Of_Segments = Frame_Length - StartNr_Of_Segments with: Syntax Bits Mnemonics Channel_Segmentation() Nr_Of_Segments = 1 Start1 = 0 End_Of_Channel_Segm 1 UiMsbf while(End_Of_Channel_Segm = 0) if (Resolution_Read = false) Resolution 13 UiMsbf Resolution_R
9、ead = true Scaled_LengthNr_Of_Segments 113 UiMsbf Segment_LengthNr_Of_Segments = Resolution * Scaled_LengthNr_Of_Segments StartNr_Of_Segments+1 = StartNr_Of_Segments + Segment_LengthNr_Of_Segments Nr_Of_Segments+ End_Of_Channel_Segm 1 UiMsbf Segment_LengthNr_Of_Segments = Frame_Length - StartNr_Of_S
10、egments ISO/IEC 2008 All rights reserved -,-,- 3 In subclause 10.5, replace: Same_Mapping 1 with: Same_Mapping 1 UiMsbf In subclause 10.5, replace: Same_Maps_For_All_Channels 1 with: Same_Maps_For_All_Channels 1 UiMsbf At the end of the paragraph in subclause 10.6.1.3, add: DSDDST_Coded signals whet
11、her the bitstream is DSD or DST coded. If DSDDST_Coded=%0 it is DSD coded and if DSDDST_Coded=%1 it is DST coded. In subclause 10.6.1.3.1, move and replace: N_Channels is the number of audio channels used as given by the channelConfiguration. to subclause 10.6.1.3 at the end of the paragraph N_Chann
12、els is the number of audio channels used. ISO/IEC 2008 All rights reserved ISO/IEC 14496-3:2005/Cor.3:2008(E) In subclause 10.6.1.3.2.2. replace: reader with: decoder In subclause 10.6.1.3.2.5.2.2.3, replace: The length of the last Segment is not encoded on the disc. with: The length of the last Seg
13、ment is not encoded. In subclause 10.6.1.3.2.6.2.2.1, replace: 812 4 with: 8N_Channels 4 -,-,- 4 In subclause 10.6.1.3.2.8, replace: All Prediction Filters coefficients are encoded in the disc. with: All Prediction Filters coefficients are encoded. In subclause 10.6.1.3.2.8.1, replace: reader with:
14、decoder In subclause 10.7.2.3, replace: Filter.StartSeg 3) = Filter.StartFilters.Nr_Of_SegmentsChannel_Nr) Seg = Filters.Nr_Of_SegmentsChannel_Nr else Filter.StartSeg = (n3) Filters.StartSeg+1 -,-,- 5 In subclause 10.7.3.1, replace: N_Channels*18816 2 8*thFrame_Leng*N_Channels axN_Errors_m=. with: .
15、 2 8*thFrame_Leng*N_Channels axN_Errors_m= In subclause 10.A.1.2, replace: , where Filter_Nr denotes the channel index and Coef_Nr . with: , where Filter_Nr denotes the filter index and Coef_Nr . In subclause 10.7, replace title: 10.7 DST Decoder Reference Model (Normative) with: 10.7 DST Decoder Reference Model ISO/IEC 2008 All rights reserved ISO/IEC 14496-3:2005/Cor.3:2008(E) In subclause 10.7.3, replace title: 10.7.3 Restrictions to DST coded Audio_Frames (Normative) with: 10.7.3 Restrictions to DST coded Audio_Frames