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BS IEC 61937-1:2021:2024 Edition

BS IEC 61937-1:2021:2024 Edition

$142.49

Digital audio. Interface for non-linear PCM Encoded audio bitstreams applying IEC 60958 – General

Published By Publication Date Number of Pages
BSI 2024 26
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IEC 61937-1:2021 is available as IEC 61937-1:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.IEC 61937-1:2021 applies to the digital audio interface using the IEC 60958 series for the conveying of non-linear PCM encoded audio bitstreams.It describes the way in which this digital interface can be used in consumer applications. The professional mode is not considered within the scope of this document. IEC 61937-1:2021 cancels and replaces the second edition published in 2007, and amendment 1 published in 2011. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Activation of Pe field; b) Enhanced usage of channel status bits. c) Addition of Annex B.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 English
CONTENTS
6 FOREWORD
8 1 Scope
2 Normative references
3 Terms, definitions, and presentation
3.1 Terms and definitions
10 3.2 Presentation convention
4 General description
5 Interface format
11 6 Mapping of the audio bitstream on to IEC 60958
6.1 Coding of the bitstream
Figures
Figure 1 – IEC 60958 interface format
Tables
Table 1 – Bit allocation of the IEC 60958 frame
12 Table 2 – Bit allocation of data-burst in IEC 60958 subframes
13 Figure 2 – Data-burst format
Figure 3 – Burst-preamble
14 Table 3 – Burst-preamble words
Table 4 – Bit map of burst-preambles
Table 5 – Fields of burst-info
15 Figure 4 – Burst-preamble with extended preamble
Table 6 – Burst-preamble words
Table 7 – Fields of Pe (extended data-type)
Table 8 – Fields of Pf
16 6.2 Burst-payload
Figure 5 – Length of the burst-payload specified by Pd
17 6.3 Stuffing
7 Format of data-bursts
7.1 General
Figure 6 – Burst spacing
18 7.2 Pause data-burst
Figure 7 – Flow chart of transmission of a bitstream
19 Figure 8 – Bridging gaps in-between data-bursts with three pause data-bursts
20 Figure 9 – Data-burst format of the data-type pause
Table 9 – Values of data-type-dependent info of the pause data-burst
Table 10 – Burst-payload of pause data-burst
21 7.3 Audio data-bursts
7.4 Null data-burst
Figure 10 – Null data-burst
Table 11 – Fields of a null data-burst
22 Annex A (normative) Channel status when IEC 60958 is used in consumer applications
Table A.1 – Allocation of the channel status bits
23 Annex B (informative) Monaural linear PCM audio sample simultaneous transferred with non-linear PCM encoded audio bitstream
Figure B.1 – Frame and block structure
24 Figure B.2 – Example 1: frame and block structure at 48 kHz IEC 60958 frame rate
Figure B.3 – Example 2: frame and block structure at 192 kHz IEC 60958 frame rate
25 Table B.1 – Relationship between sampling frequency for monaural linear PCM and IEC 60958 frame rate for non-linear PCM

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