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eLibrary > BS IEC 61937-1:2021 Digital audio. Interface for non-linear PCM Encoded audio bitstreams applying IEC 60958 - General >

BS IEC 61937-1:2021 Digital audio. Interface for non-linear PCM Encoded audio bitstreams applying IEC 60958 - General, 2024

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English [Go to Page]
CONTENTS
FOREWORD
1 Scope
2 Normative references
3 Terms, definitions, and presentation [Go to Page]
3.1 Terms and definitions
3.2 Presentation convention
4 General description
5 Interface format
6 Mapping of the audio bitstream on to IEC 60958 [Go to Page]
6.1 Coding of the bitstream
Figures [Go to Page]
Figure 1 – IEC 60958 interface format
Tables [Go to Page]
Table 1 – Bit allocation of the IEC 60958 frame
Table 2 – Bit allocation of data-burst in IEC 60958 subframes
Figure 2 – Data-burst format
Figure 3 – Burst-preamble
Table 3 – Burst-preamble words
Table 4 – Bit map of burst-preambles
Table 5 – Fields of burst-info
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
6.2 Burst-payload
Figure 5 – Length of the burst-payload specified by Pd
6.3 Stuffing
7 Format of data-bursts [Go to Page]
7.1 General
Figure 6 – Burst spacing
7.2 Pause data-burst
Figure 7 – Flow chart of transmission of a bitstream
Figure 8 – Bridging gaps in-between data-bursts with three pause data-bursts
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
7.3 Audio data-bursts
7.4 Null data-burst
Figure 10 – Null data-burst
Table 11 – Fields of a null data-burst
Annex A (normative) Channel status when IEC 60958 is used in consumer applications [Go to Page]
Table A.1 – Allocation of the channel status bits
Annex B (informative) Monaural linear PCM audio sample simultaneous transferred with non-linear PCM encoded audio bitstream [Go to Page]
Figure B.1 – Frame and block structure
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
Table B.1 – Relationship between sampling frequency for monaural linear PCM and IEC 60958 frame rate for non-linear PCM [Go to Page]

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