{"id":229307,"date":"2024-10-19T14:55:02","date_gmt":"2024-10-19T14:55:02","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-629422020\/"},"modified":"2024-10-25T09:03:15","modified_gmt":"2024-10-25T09:03:15","slug":"bs-en-iec-629422020","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-629422020\/","title":{"rendered":"BS EN IEC 62942:2020"},"content":{"rendered":"

IEC 62942:2019 specifies a file format for interchanging audio data between compliant equipment. It is primarily intended for audio applications in professional recording, production, post-production, and archiving.It is derived from the AES31-2 [2] but is also compatible with variant specifications including EBU Tech 3285 [3] to [10], ITU-R BR.1352-3-2007 [11] to [14], and the Japan Post Production Association’s BWF-J [15]. This document contains the specification of the broadcast audio extension chunk and its use with PCM-coded audio data. Basic information on the RIFF format and how it can be extended to other types of audio data is given in Annex E. Details of the PCM WAVE format are also given in Annex A. An optional extended format, BWF-E, supports 64-bit addressing to permit file sizes greater than 4 GB.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
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2<\/td>\nundefined <\/td>\n<\/tr>\n
5<\/td>\nAnnex ZA(normative)Normative references to international publicationswith their corresponding European publications <\/td>\n<\/tr>\n
6<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
11<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
12<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
14<\/td>\n4 BWF file
4.1 Existing chunks defined as part of the RIFF Format
4.2 Additional chunks
4.3 Contents of a BWFF <\/td>\n<\/tr>\n
15<\/td>\n4.4 Broadcast audio extension chunk <\/td>\n<\/tr>\n
16<\/td>\nTables
Table 1 \u2013 bext field content definitions <\/td>\n<\/tr>\n
17<\/td>\n4.5 Filename
4.6 Channel usage
4.7 File size <\/td>\n<\/tr>\n
18<\/td>\nAnnex A (normative)RIFF WAVE file format
A.1 General
A.2 Resource Interchange File Format (RIFF)
A.2.1 General
A.2.2 Chunks
Table A.1 \u2013 Chunk description <\/td>\n<\/tr>\n
19<\/td>\nA.2.3 RIFF forms
A.3 Waveform audio file format (WAVE)
A.3.1 General <\/td>\n<\/tr>\n
20<\/td>\nA.3.2 WAVE format chunk
A.3.3 WAVE format categories
Table A.2 \u2013 Format chunk \u2013 Common fields <\/td>\n<\/tr>\n
21<\/td>\nTable A.3 \u2013 WAVE format categories
Table A.4 \u2013 Data packing for 16-bit mono PCM <\/td>\n<\/tr>\n
22<\/td>\nTable A.5 \u2013 Data packing for 16-bit stereo PCM
Table A.6 \u2013 PCM data format
Table A.7 \u2013 PCM data format \u2013 16-bit
Table A.8 \u2013 PCM WAVE format chunk examples <\/td>\n<\/tr>\n
23<\/td>\nA.4 Storage of WAVE data <\/td>\n<\/tr>\n
25<\/td>\nAnnex C (normative)Filename conventions
C.1 General
C.2 File-name length
C.3 File-name extension
C.4 File-name character set
Table C.1 \u2013 Permitted file-name characters <\/td>\n<\/tr>\n
26<\/td>\nTable C.2 \u2013 Non-permitted file-name characters
Table C.3 \u2013 Non-permitted file-name terminators <\/td>\n<\/tr>\n
27<\/td>\nAnnex D (informative)Multi-channel usage
D.1 General
D.2 Multi-channel audio data packing
Figures
Figure D.1 \u2013 Data packing for 24-bit mono PCM audio data
Figure D.2 \u2013 Data packing for 16-bit stereo (2-channel) PCM audio data
Figure D.3 \u2013 Data packing for 24-bit, 4-channel PCM audio data <\/td>\n<\/tr>\n
28<\/td>\nD.3 Channel assignments in multi-channel files
D.3.1 General
D.3.2 Distribution and archive
D.3.3 Production recordings
Figure D.4 \u2013 24-bit sample packing <\/td>\n<\/tr>\n
29<\/td>\nAnnex E (informative)Other audio codings
E.1 General
E.2 MPEG files <\/td>\n<\/tr>\n
30<\/td>\nAnnex F (normative)Extended file format (BWF-E)
F.1 General
F.2 Exceeding the 4GB limit
F.2.1 General
Figure F.1 \u2013 Conventional RIFF\/WAVE format <\/td>\n<\/tr>\n
31<\/td>\nF.2.2 64-bit resource interchange file format (RF64)
Figure F.2 \u2013 Extended RF64\/WAVE format <\/td>\n<\/tr>\n
32<\/td>\nF.3 Compatibility between BWF and BWF-E
F.3.1 General
F.3.2 Initialisation as BWF
F.3.3 Transition to BWF-E
Figure F.3 \u2013 Compatible RIFF\/WAVE structure <\/td>\n<\/tr>\n
33<\/td>\nF.4 RIFF\/WAVE and RF64\/WAVE structures
F.4.1 Chunks and structs specific to the RIFF\/WAVE format
F.4.2 Chunks and structs specific to the RF64\/WAVE (BWF-E) format <\/td>\n<\/tr>\n
35<\/td>\nAnnex G (normative)bext chunk versions
G.1 Version 0
G.2 Version 1
G.3 Version 2 <\/td>\n<\/tr>\n
36<\/td>\nAnnex H (normative)Loudness parameters
H.1 Treatment of loudness parameters
Table H.1 \u2013 Rounding negative values
Table H.2 \u2013 Rounding positive values <\/td>\n<\/tr>\n
37<\/td>\nH.2 Loudness parameter references <\/td>\n<\/tr>\n
38<\/td>\nAnnex I (informative)Definition of the format for “Unique” Source Identifier (USID) for use in the field
I.1 USID
I.2 Examples of USIDs <\/td>\n<\/tr>\n
39<\/td>\nAnnex J (informative)Specification of the format for field
J.1 General
J.2 Syntax
J.3 Examples of coding history fields
Table J.1 \u2013 CodingHistory parameters <\/td>\n<\/tr>\n
41<\/td>\nAnnex K (normative)Universal broadcast audio extension chunk
K.1 General
K.2 Contents of a BWFF with ‘ubxt’ chunk
K.3 Universal broadcast audio extension chunk <\/td>\n<\/tr>\n
42<\/td>\nTable K.1 \u2013 ubxt field content definitions <\/td>\n<\/tr>\n
44<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

File format for professional transfer and exchange of digital audio data<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2020<\/td>\n46<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":229310,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[641,2641],"product_tag":[],"class_list":{"0":"post-229307","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-160-30","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/229307","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/229310"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=229307"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=229307"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=229307"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}