1、Information technology Coding of audio-visual objects Part 26: Audio conformance AMENDMENT 4: AAC Additional Multichannel Conformance Data Technologies de linformation Codage des objets audiovisuels Partie 26: Conformit audio AMENDEMENT 4: Donnes AAC de conformit multicanal supplmentaire INTERNATION
2、AL STANDARD ISO/IEC 14496-26 First edition 2010-05-01 Reference number ISO/IEC 14496-26:2010/Amd.4:2016(E) AMENDMENT 4 2016-11-15 ISO/IEC 2016 ii ISO/IEC 2016 All rights reserved COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no p
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4、body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyrightiso.org www.iso.org ISO/IEC 14496-26:2010/Amd.4:2016(E) ISO/IEC 14496-26:2010/Amd.4:2016(E) Foreword ISO (the International O
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8、erent types of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO sha
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11、hnical Barriers to Trade (TBT) see the following URL: www.iso.org/iso/foreword.html. Amendment 4 to ISO/IEC 14496-26:2010 was prepared by ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and hypermedia information. ISO/IEC 2016 All rights reserved iii I
12、nformation technology Coding of audio-visual objects Part 26: Audio conformance AMENDMENT 4: AAC Additional Multichannel Conformance Data Page 6, 6.1 Replaceindicates the SBR module mainly targeted by the test sequence. Possible values are “e” for testing the envelope adjuster “s” for testing sine a
13、ddition, “gh” for testing time-grid transitions in combination with changes of SBR header data, “i” for testing inverse filtering, “qmf” for testing the QMF implementation, “cm” for testing various channel modes, “sig” for testing SBR signaling, “twi” for QMF identification, and “sr” for testing var
14、ious combinations of sampling rates. withindicates the SBR module mainly targeted by the test sequence. Possible values are “e” for testing the envelope adjuster “s” for testing sine addition, “gh” for testing time-grid transitions in combination with changes of SBR header data, “i” for testing inve
15、rse filtering, “qmf” for testing the QMF implementation, “cm” and “gen” for testing various channel modes, “sig” for testing SBR signaling, “twi” for QMF identification, and “sr” for testing various combinations of sampling rates. Page 18, Table 7 Replace samplingFrequencyIndex / samplingFrequency L
16、evel 1 Level 2 Level 3 Level 4 Level 5 High Efficiency AAC Profile SBR pres- ent NA 0x60xc, 0xf / = 24000 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 (Note 1) 0x30xc, 0xf / = 48000 SBR not present NA 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 0x00xc, 0xf / = 96000 Note 1: For
17、Level 4, for one or two channels the maximum AAC sampling rate, with SBR present, is 48 kHz. For more than two channels the maximum AAC sampling rate, with SBR present, is 24 kHz. (0x60xc, 0xf / = 24000) extensionSamplingFrequencyIndex / extensionSamplingFrequency Level 1 Level 2 Level 3,4 Level 5 H
18、igh Efficiency AAC Profile NA 0x60xc, 0xf / = 24000 0x30xc, 0xf / = 48000 0x00xc, 0xf / = 96000 ISO/IEC 14496-26:2010/Amd.4:2016(E) ISO 2016 All rights reserved 1 ISO/IEC 14496-26:2010/Amd.4:2016(E) with samplingFrequencyIndex / samplingFrequency Level 1 Level 2 Level 3 Level 4, Level 6 Level 5, Lev
19、el 7 High Efficiency AAC Profile SBR pres- ent NA 0x60xc, 0xf / = 24000 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 (Note) 0x30xc, 0xf / = 48000 SBR not present NA 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 0x30xc, 0xf / = 48000 0x00xc, 0xf / = 96000 NOTE For Level 4, for one or two channels, the m
20、aximum AAC sampling rate, with SBR present, is 48 kHz. For more than two channels, the maximum AAC sampling rate, with SBR present, is 24 kHz. (0x60xc, 0xf / = 24000) extensionSamplingFrequencyIndex / extensionSamplingFrequency Level 1 Level 2 Level 3,4,6 Level 5,7 High Efficiency AAC Profile NA 0x6
21、0xc, 0xf / = 24000 0x30xc, 0xf / = 48000 0x00xc, 0xf / = 96000 Page 18, Table 8 Replace ChannelConfiguration Level 1 Level 2 Level 3 Level 4 Level 5 AAC Profile 02 02 NA 06 06 High Efficiency AAC Profile NA 02 02 06 06 with ChannelConfiguration Level 1 Level 2 Level 3 Level 4,5 Level 6,7 AAC Profile
22、 02 02 NA 06 07 , 11, 12, 14 High Efficiency AAC Profile NA 02 02 06 07 , 11, 12, 14 Page 21, 7.4.1.2.1.4 Replace comment_field_datai: no restrictions apply. with comment_field_datai: AAC, HE-AAC, HE-AACv2 and Extended HE-AAC Profile decoders of Levels 6 and 7 shall support parsing the comment_field
23、_data and interpret a height_extension_element() embedded therein, else no restrictions apply.2 ISO 2016 All rights reserved ISO/IEC 14496-26:2010/Amd.4:2016(E) Page 32, Table 14 a) Between the rows al19 and as00 al19 noise 40/64 2 * 1 0 - - - s n n n n - n y n - n - n n PNS-2/3 as00 s i n e sweep 4
24、0/64 3 * 0 0 - - - y n n n n - n n n n n - y n RMS add the new test sequences al20, al21 and al22 and table note: al19 noise 40/64 2 * 1 0 - - - s n n n n - n y n - n - n n PNS-2/3 al20 sine 384 2 35 11 0 - y y y n y n n - n n y - y - n n none al21 sine 448 2 35 12 0 - y y y n y n n - n n y - y - n
25、n none al22 sine 448 2 35 14 0 - y y y n y n n - n n y - y - n n none as00 s i n e sweep 40/64 3 * 0 0 - - - y n n n n - n n n n n - y n RMS NOTE With al22, two different signalling methodologies of channel configurations are available, denoted by _chCfg14 or _chCfg0Pce respectively. Page 112, Table
26、 69 Between the rows al_sbr_sr and al960_sbr_qmf al_sbr_twi none 24 y y - - - - y - - - - al_sbr_qmf Sine Sweep 24 - y - - - - - - 5 1.4 maxDiff/RMS al_sbr_e rectangle * 10Hz sine 24/48 - - y - - - - y(Note 1) 90 2.0 maxDiff/RMS al_sbr_gh rectangle * 10Hz sine 24/48 - - - y y - - - 51 1.5 maxDiff/RM
27、S al_sbr_i(Note 2) rectangle + noise 24/48 - - - - - y - y(Note 1) 36 3.4 maxDiff/RMS al_sbr_s noise 24 - - - - - - y - 120 1.9 maxDiff/RMS al_sbr_cm music 24-128 - - - - - - - - - - - al_sbr_sig music 48 - - - - - - - - - - - al_sbr_sr music 24-56 - - - - - - - - - - - al960_sbr_qmf Sine Sweep 24 -
28、 y - - - - - - TBD TBD maxDiff/RMS al960_sbr_e rectangle* 10Hz sine 24/48 - - y - - - - yA TBD TBD maxDiff/RMS al960_sbr_gh rectangle* 10Hz sine 24/48 - - - y y - - - TBD TBD maxDiff/RMS al960_sbr_i rectangle + noise 24/48 - - - - - y - yA TBD TBD maxDiff/RMS al960_sbr_s noise 24 - - - - - - y - TBD
29、 TBD maxDiff/RMS NOTE 1 CRC enabled for 32 kHz test vectors. NOTE 2 The following bitstreams also exist with the suffix _new: al_sbr _i_32_1, al_sbr _i_44_1, al_sbr _i_48_1. These are preferred for conformance testing while the ones without this suffix are deprecated. ISO 2016 All rights reserved 3
30、ISO/IEC 14496-26:2010/Amd.4:2016(E) add the new test sequence al_sbr_gen: al_sbr_twi none 24 y y - - - - y - - - - al_sbr_qmf Sine Sweep 24 - y - - - - - - 5 1.4 maxDiff/RMS al_sbr_e rectangle * 10Hz sine 24/48 - - y - - - - y(Note 1) 90 2.0 maxDiff/RMS al_sbr_gh rectangle * 10Hz sine 24/48 - - - y
31、y - - - 51 1.5 maxDiff/RMS al_sbr_i(Note 2) rectangle + noise 24/48 - - - - - y - y(Note 1) 36 3.4 maxDiff/RMS al_sbr_s noise 24 - - - - - - y - 120 1.9 maxDiff/RMS al_sbr_cm music 24-128 - - - - - - - - - - - al_sbr_sig music 48 - - - - - - - - - - - al_sbr_sr music 24-56 - - - - - - - - - - - al_s
32、br_gen sine 192-224 al960_sbr_qmf Sine Sweep 24 - y - - - - - - TBD TBD maxDiff/RMS al960_sbr_e rectangle* 10Hz sine 24/48 - - y - - - - yA TBD TBD maxDiff/RMS al960_sbr_gh rectangle* 10Hz sine 24/48 - - - y y - - - TBD TBD maxDiff/RMS al960_sbr_i rectangle + noise 24/48 - - - - - y - yA TBD TBD max
33、Diff/RMS al960_sbr_s noise 24 - - - - - - y - TBD TBD maxDiff/RMS NOTE 1 CRC enabled for 32 kHz test vectors. NOTE 2 The following bitstreams also exist with the suffix _new: al_sbr _i_32_1, al_sbr _i_44_1, al_sbr _i_48_1. These are preferred for conformance testing while the ones without this suffi
34、x are deprecated. Page 215, Table 95 Replace Table 95 with the following: Table 95 Object type Sequence name AAC Profile High Efficiency AAC Profile High Efficiency AAC v2 Profile Level 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 A AC LC al00 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al01 6 3 NA 3
35、X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al02 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al03 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al04 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al05 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al06 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al07 6 3 NA 3
36、X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al08 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al14 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al16 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al17 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al18 6 3 NA 3 X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al19 6 3 NA 3
37、X 3 X NA 3 3 3 X 3 X NA 3 3 3 X 3 X al20 3 X 3 X 3 X al21 3 X 3 X 3 X al22 3 X 3 X 3 X SBR al_sbr_qmf NA 6 3 3 3 3 3 NA 6 3 3 3 3 34 ISO 2016 All rights reserved ISO/IEC 14496-26:2010/Amd.4:2016(E) Object type Sequence name AAC Profile High Efficiency AAC Profile High Efficiency AAC v2 Profile Level
38、 1 2 3 4 5 6 7 1 2 3 4 5 6 7 1 2 3 4 5 6 7 al_sbr_e NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_gh NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_i NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_s NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_cm NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_sig NA 6 3 3 3 3 3 NA 6 3 3 3 3 3 al_sbr_sr NA 6 3 3
39、3 3 3 NA 6 3 3 3 3 3 al_sbr_gen 3 X 3 X PS al_sbr_ps_00 NA x x x x x x al_sbr_ps_01 NA x x x x x x al_sbr_ps_02 NA x x x x x x al_sbr_ ps_03 NA x x x x x x al_sbr_ ps_04 NA x x x x x x al_sbr_ ps_05 NA x x x x x x al_sbr_ ps_06 NA x x x x x xTable 95 (continued) ISO 2016 All rights reserved 5 ISO/IEC 14496-26:2010/Amd.4:2016(E) ISO/IEC 2016 All rights reserved ICS 35.040 Price based on 5 pages
