1、Information technology Coding of audio-visual objects Part 4: Conformance testing AMENDMENT 22: AudioBIFS v3 conformanceAmendment 22:2009 (IDT) toNational Standard of CanadaCAN/CSA-ISO/IEC 14496-4-06(ISO/IEC 14496-4:2004, IDT)NOT FOR RESALE.PUBLICATION NON DESTINE LA REVENTE.CSA Standards Update Ser
2、viceAmendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06October 2009Title: Information technology Coding of audio-visual objects Part 4: Conformance testing AMENDMENT 22: AudioBIFS v3 conformancePagination: 23 pages (iii preliminary and 20 text)To register for e-mail notification about any updates to this
3、 publicationgo to www.ShopCSA.caclick on E-mail Services under MY ACCOUNTclick on CSA Standards Update ServiceThe List ID that you will need to register for updates to this publication is 2418413.If you require assistance, please e-mail techsupportcsa.ca or call 416-747-2233.Visit CSAs policy on pri
4、vacy at www.csagroup.org/legal to find out how we protect your personal information.Reference numberISO/IEC 14496-4:2004/Amd.22:2008(E)ISO/IEC 2008INTERNATIONAL STANDARD ISO/IEC14496-4Second edition2004-12-15AMENDMENT 222008-03-01Information technology Coding of audio-visual objects Part 4: Conforma
5、nce testing AMENDMENT 22: AudioBIFS v3 conformance Technologies de linformation Codage des objets audiovisuels Partie 4: Essai de conformit AMENDEMENT 22: Conformit AudioBIFS v3 ISO/IEC 14496-4:2004/Amd.22:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes
6、 licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. T
7、he ISO Central Secretariat accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care h
8、as been taken to ensure that the file is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO/IEC 2008 All rights reserved. Unless otherwise specified, n
9、o part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case post
10、ale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org ii ISO/IEC 2008 All rights reservedAmendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06ISO/IEC 14496-4:2004/Amd.22:2008(E) ISO/IEC 2008 All rights reserved iiiForeword ISO (the International Organ
11、ization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the res
12、pective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of informa
13、tion technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of the joint technical committee is to prepare International Standards. Draft Internationa
14、l Standards adopted by the joint technical committee are circulated to national bodies for voting. Publication as an International Standard requires approval by at least 75 % of the national bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may b
15、e the subject of patent rights. ISO and IEC shall not be held responsible for identifying any or all such patent rights. Amendment 22 to ISO/IEC 14496-4:2004 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information technology, Subcommittee SC 29, Coding of audio, picture, multimedia and
16、hypermedia information. Amendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06ISO/IEC 14496-4:2004/Amd.22:2008(E) ISO/IEC 2008 All rights reserved 1Information technology Coding of audio-visual objects Part 4: Conformance testing AMENDMENT 22: AudioBIFS v3 conformance In subclause 4.4.3.3 Bitstreams, insert
17、 the following row into Table 6 after the row for AABper1-76: Table 6 Test Sequence Providers and Reason for Existence ABv3_AAB01-05 Thomson Tests AudioBIFS v3 node AdvancedAudioBuffer ABv3_ACC01-05 ABv3_ACC06a-c ABv3_ACC07a-c ABv3_ACC09-13 FhG, Thomson, FT Tests AudioBIFS v3 node AudioChannelConfig
18、 ABv3_SS01a-b ABv3_SS02a-b ABv3_SS04-05 FhG, FT Tests AudioBIFS v3 node SurroundingSound ABv3_T3DA01-08 FhG Tests AudioBIFS v3 node Transform3Daudio ABv3_WS0101-03 FhG, Thomson, Tests AudioBIFS v3 node WideSound Abv3_Afxp_Ach01Abv3_Afxp_Aco01Abv3_Afxp_Aec01Abv3_Afxp_Aeq01Abv3_Afxp_Afi01 Abv3_Afxp_Af
19、l01 Abv3_Afxp_Ana01Abv3_Afxp_Are01Abv3_Afxp_Asp01Abv3_Afxp_Ast01Abv3_Afxp_Avi01 Thomson Tests AudioBIFS v3 AudioFXProto effects In subclause 6.5.1 File name conventions, insert the following row into Table 29 in alphabetical order: Table 29 File name conventions A.1 AudioBIFS v3 A.2 ABv3_ A.3 - not
20、applicable - Amendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06ISO/IEC 14496-4:2004/Amd.22:2008(E) 2 ISO/IEC 2008 All rights reservedIn subclause 6.5.1 File name conventions, insert the following paragraph after “_s is a number refering to the decoder configuration with regard to the speed factor.“: is
21、the abbreviation of one of the AudioBIFS v3 node names (see Table 6). After subclause 6.11.5.4.4.2 Test scenes, insert the following subclauses: 6.12 AudioBIFS v3 Nodes 6.12.1 Introduction This clause describes the conformance testing for the rendering and output of AudioBIFS v3 nodes, which are use
22、d for adding support for shaped sound sources (WideSound node), Ambisonics audio streams to two-and three-dimensional BIFS scenes. Furthermore they allow 3D sound in 2D visual scenes (Transform3DAudio node) and simplify the use of pre-defined audio effects (AudioFXProtos). With AudioBIFS v3 also a l
23、abelling mechanism was introduced that transports the channel configuration information through the AudioBIFS sub-graph and can be altered with the AudioChannelConfig node. 6.12.2 Composition Unit Inputs The input audio streams used in the conformance testing of AudioBIFS v3 shall be outputs of an A
24、AC decoder (AOT 2), and they are monophonic, stereophonic, 5.1 (surround) and Ambisonics sounds. They are explained below: ABv3_CU01_2ch_AOT2_L1R2: Composition Unit Input AAC: white noise for one second on left, for one second on right channel. Duration: 8 seconds, sampling rate 44100 Hz, stereo. AB
25、v3_CU02_2ch_AOT2_L3R4: Composition Unit Input AAC: after 2 seconds silence white noise for one second on left, then for one second on right channel. Duration: 8 seconds, sampling rate 44100 Hz, stereo. ABv3_CU03_2ch_AOT2_L5R6: Composition Unit Input AAC: after 4 seconds silence white noise for one s
26、econd on left, then for one second on right channel. Duration: 8 seconds, sampling rate 44100 Hz, stereo. ABv3_CU04_1ch_AOT2_M5: Composition Unit Input AAC: after 4 seconds silence white noise for one second. Duration: 8 seconds, sampling rate 44100 Hz, mono. ABv3_CU05_1ch_AOT2_M6: Composition Unit
27、Input AAC: after 5 seconds silence white noise for one second. Duration: 8 seconds, sampling rate 44100 Hz, mono. ABv3_CU06_1ch_AOT2_M0-3: Composition Unit Input AAC: 3 seconds white noise starting from the beginning. Duration: 3 seconds, sampling rate 44100 Hz, mono. ABv3_CU07_6ch_AOT2_surround: Co
28、mposition Unit Input AAC: 0.5 seconds silence, then for 0.2 seconds an 880Hz sinus tone on center channel, 0.3s silence, 0.5s 440Hz sin on front left channel, 0.5s 440Hz sin on front right channel, 0.4s 220Hz sin on left surround channel, 0.1s silence, 0.4s 220Hz sin on right surround channel, 0.1s
29、silence, 1s white noise on LFE channel. Duration: 4 seconds, sampling rate 44100 Hz, 5.1 channels. ABv3_CU08_1ch_AOT2_one: Composition Unit Input AAC: male voice one. Duration: 1 second, sampling rate 44100 Hz, mono. ABv3_CU09_1ch_AOT2_two: Composition Unit Input AAC: male voice two. Duration: 1 sec
30、ond, sampling rate 44100 Hz, mono. ABv3_CU10_1ch_AOT2_three: Composition Unit Input AAC: male voice three. Duration: 1 second, sampling rate 44100 Hz, mono. Amendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06ISO/IEC 14496-4:2004/Amd.22:2008(E) ISO/IEC 2008 All rights reserved 3ABv3_CU11_1ch_AOT2_four: Co
31、mposition Unit Input AAC: male voice four. Duration: 1 second, sampling rate 44100 Hz, mono. ABv3_CU12_1ch_AOT2_five: Composition Unit Input AAC: male voice five. Duration: 1 second, sampling rate 44100 Hz, mono. ABv3_CU13_1ch_AOT2_six: Composition Unit Input AAC: male voice six. Duration: 1 second,
32、 sampling rate 44100 Hz, mono. ABv3_CU14_2ch_AOT2_LCR_Binaural: Composition Unit Input AAC: male voices left, center, right, repeated 1 time. Duration: 10 seconds, sampling rate 44100 Hz, 2-channel binaural. ABv3_CU15_2ch_AOT2_applause: Composition Unit Input AAC: applause. Duration: 12 seconds, sam
33、pling rate 44100 Hz, 2-channel stereo. ABv3_CU16_1ch_AOT2_applause_mono: Composition Unit Input AAC: applause. Duration: 12 seconds, sampling rate 44100 Hz, 1-channel mono. ABv3_CU17_2ch_AOT2_orchestra: Composition Unit Input AAC: orchestra. Duration: 12 seconds, sampling rate 44100 Hz, 2-channel st
34、ereo. ABv3_CU18_1ch_AOT2_orchestra_mono: Composition Unit Input AAC: orchestra. Duration: 12 seconds, sampling rate 44100 Hz, 1-channel mono. ABv3_CU19_1ch_AOT2_W: Composition Unit Input AAC: the omni-directional channel (0thorder component W) of a 3D ambisonic recording of an ambient sound field: a
35、 complex, mostly static, outdoor scene; birds singing all around, splashes caused by stones thrown in the water first on the left then on the right, a child and adults speaking on the front, slightly on the left. In the test sequences, it has to be decoded and played synchronously with the following
36、 audio streams (ABv3_CU20_ to ABv3_CU22_.). Duration: 14.3 seconds, sampling rate 44100 Hz, 1-channel. ABv3_CU20_2ch_AOT2_XY: Composition Unit Input AAC: the horizontal, bidirectional (1storder) channels X and Y of the same ambisonic recording as ABv3_CU19_1ch_AOT2_W. Duration: 14.3 seconds, samplin
37、g rate 44100 Hz, 2-channels. ABv3_CU21_1ch_AOT2_Z: Composition Unit Input AAC: the vertical bidirectional (1storder) channel Z of the same ambisonic recording as ABv3_CU19_1ch_AOT2_W. Duration: 14.3 seconds, sampling rate 44100 Hz, 1-channel. ABv3_CU22_2ch_AOT2_UV: Composition Unit Input AAC: the ho
38、rizontal, 2ndorder channels U and V of the same ambisonic recording as ABv3_CU19_1ch_AOT2_W. Duration: 14.3 seconds, sampling rate 44100 Hz, 2-channels. ABv3_CU23_1ch_AOT2_ambITU_C: Composition Unit Input AAC: the center channel of a 5.0 playback version of the recording described for ABv3_CU19_1ch_
39、AOT2_W that could be played over a standard ITU loudspeaker arrangement. Duration: 14.3 seconds, sampling rate 44100 Hz, 1 channel. ABv3_CU24_2ch_AOT2_ambITU_LR: Composition Unit Input AAC: the front left and front right channels the 5.0 playback version described above. Duration: 14.3 seconds, samp
40、ling rate 44100 Hz, 2 channels. ABv3_CU25_2ch_AOT2_ambITU_SLSR: Composition Unit Input AAC: the surround left and surround right channels the 5.0 playback version described above. Duration: 14.3 seconds, sampling rate 44100 Hz, 2 channels. Abv3_CU26_2ch_AOT2_seawash_cl.media: Composition Unit Input
41、AAC: center channel and left channel seawash. Duration: 20 seconds, sampling rate 48000 Hz, 2 channels. Abv3_CU27_2ch_AOT2_seawash_rs.media: Composition Unit Input AAC: right channel and surround channel seawash. Duration: 20 seconds, sampling rate 48000 Hz, 2 channels. Abv3_AudioNaturalReverb_Impul
42、seResponse.wav: Original impulse response for binary comparison for test scene Abv3_aFXP_aNa01. Amendment 22:2009 toCAN/CSA-ISO/IEC 14496-4-06ISO/IEC 14496-4:2004/Amd.22:2008(E) 4 ISO/IEC 2008 All rights reserved6.12.3 Compositor Output The output of the audio compositor will be investigated for con
43、formance, and shall be a single output, N channel (depending on the spatialization and reproduction method used) PCM audio stream. The input audio streams are at 16 bit signed integer sample format, and the processing defined by the Advanced Audio BIFS nodes in the scene will be carried out at an ac
44、curacy of at least 16 bits. Because of the non-normative nature of implementing many of the AudioBIFS features, no sample-wise comparison is done to the output sound from the compositor. Some of the features can be evaluated in a static situation (no dynamic changes, such as sound source or viewpoin
45、t movements, in the 3D environment) by measuring certain parameters of the compositors output. Some functionalities, on the other hand, require testing in a dynamic situation where only subjective evaluation can be used (the user is listening to the sound compositor output, and watching the visual c
46、ompositor output if visual components are present). In addition to objective and subjective testing a third on one is needed for AudioBIFS v3, the parameter printout. Therefore the printout of certain parameters (like the absolute position of an audio source or the current channel configuration of t
47、he audio data) can be compared with a given reference. Note, that the parameter printout does not print the contents of a nodes field, but the status information like channel configuration that has to be passed through the audio scene graph along with the audio data or through the BIFS scene graph l
48、ike the transform hierarchy. The parameter printout should be ASCII text with the format parameterName value_1 value_n whereby value should be in the format of the corresponding field and logged in the top-level sound nodes. In case of a SFFloat/MFFloat field type the 1.16 float format should be use
49、d. 6.12.4 Conformance Tests for AudioBIFS v3 Nodes The following chapters contain the detailed description of the conformance tests for the nodes AdvancedAudioBuffer, AudioChannelConfig, SurroundingSound, Transform3Daudio, WideSound and AudioFXProto effects. 6.12.4.1 Testing of AdvancedAudioBuffer Node The AdvancedAudioBuffer node provides an interface for stored sound. This node has corrected functionality and enhanced reload mechanism compared to the AudioBuffer node, e.g to accumul
