BS EN IEC 62942:2020
$189.07
File format for professional transfer and exchange of digital audio data
| Published By | Publication Date | Number of Pages |
| BSI | 2020 | 46 |
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.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 5 | Annex ZA(normative)Normative references to international publicationswith their corresponding European publications |
| 6 | CONTENTS |
| 9 | FOREWORD |
| 11 | INTRODUCTION |
| 12 | 1 Scope 2 Normative references 3 Terms and definitions |
| 14 | 4 BWF file 4.1 Existing chunks defined as part of the RIFF Format 4.2 Additional chunks 4.3 Contents of a BWFF |
| 15 | 4.4 Broadcast audio extension chunk |
| 16 | Tables Table 1 – bext field content definitions |
| 17 | 4.5 Filename 4.6 Channel usage 4.7 File size |
| 18 | Annex 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 – Chunk description |
| 19 | A.2.3 RIFF forms A.3 Waveform audio file format (WAVE) A.3.1 General |
| 20 | A.3.2 WAVE format chunk A.3.3 WAVE format categories Table A.2 – Format chunk – Common fields |
| 21 | Table A.3 – WAVE format categories Table A.4 – Data packing for 16-bit mono PCM |
| 22 | Table A.5 – Data packing for 16-bit stereo PCM Table A.6 – PCM data format Table A.7 – PCM data format – 16-bit Table A.8 – PCM WAVE format chunk examples |
| 23 | A.4 Storage of WAVE data |
| 25 | Annex 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 – Permitted file-name characters |
| 26 | Table C.2 – Non-permitted file-name characters Table C.3 – Non-permitted file-name terminators |
| 27 | Annex D (informative)Multi-channel usage D.1 General D.2 Multi-channel audio data packing Figures Figure D.1 – Data packing for 24-bit mono PCM audio data Figure D.2 – Data packing for 16-bit stereo (2-channel) PCM audio data Figure D.3 – Data packing for 24-bit, 4-channel PCM audio data |
| 28 | D.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 – 24-bit sample packing |
| 29 | Annex E (informative)Other audio codings E.1 General E.2 MPEG files |
| 30 | Annex F (normative)Extended file format (BWF-E) F.1 General F.2 Exceeding the 4GB limit F.2.1 General Figure F.1 – Conventional RIFF/WAVE format |
| 31 | F.2.2 64-bit resource interchange file format (RF64) Figure F.2 – Extended RF64/WAVE format |
| 32 | F.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 – Compatible RIFF/WAVE structure |
| 33 | F.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 |
| 35 | Annex G (normative)bext chunk versions G.1 Version 0 G.2 Version 1 G.3 Version 2 |
| 36 | Annex H (normative)Loudness parameters H.1 Treatment of loudness parameters Table H.1 – Rounding negative values Table H.2 – Rounding positive values |
| 37 | H.2 Loudness parameter references |
| 38 | Annex I (informative)Definition of the format for “Unique” Source Identifier (USID) for use in the field I.1 USID I.2 Examples of USIDs |
| 39 | Annex J (informative)Specification of the format for field J.1 General J.2 Syntax J.3 Examples of coding history fields Table J.1 – CodingHistory parameters |
| 41 | Annex 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 |
| 42 | Table K.1 – ubxt field content definitions |
| 44 | Bibliography |
