BS IEC 61937-14:2017
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Digital audio. Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 – Non-linear PCM bitstreams according to the AC-4 format
| Published By | Publication Date | Number of Pages |
| BSI | 2017 | 30 |
This part of IEC 61937 describes the method to convey non-linear PCM bit streams encoded according to the AC-4 format.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | CONTENTS |
| 6 | FOREWORD |
| 8 | 1 Scope 2 Normative references 3 Terms, definitions and abbreviated terms |
| 9 | 3.6 Abbreviated terms 4 Mapping of the audio bit stream on to IEC 61937-1 4.1 General 4.2 AC-4 burst-info Tables Table 1 – Shorthand notation for fractional frame rates |
| 10 | 5 Format of AC-4 data-bursts 5.1 General 5.2 Pause data-burst 5.3 Audio data-burst 5.3.1 The AC-4 data Table 2 – Fields of burst-info Table 3 – Repetition period of the Pause data-bursts |
| 11 | Figures Figure 1 – AC-4 data-burst Table 4 – Data-type-dependent information for AC-4 |
| 12 | Table 5 – AC-4 base sampling frequency, AC-4 audio framerate and corresponding AC-4 data-burst repetition period Table 6 – AC-4 data-burst sequence and repetition period variance at 29,97, 59,94 and 119,88 fps |
| 13 | Table 7 – AC-4 data-burst: meaning of Pc bits 8 to 11 at an IEC 60958 frame rate of 48 kHz Table 8 – AC-4 data-burst: meaning of Pc bits 8 to 11 at an IEC 60958 frame rate of 44,1 kHz |
| 14 | 5.3.2 Latency of the AC-4 decoder Figure 2 – Latency of AC-4 decoding Table 9 – Maximum burst-length values per AC-4 data-burst repetition period |
| 15 | 5.3.3 The AC-4 HBR4 data Figure 3 – AC-4 HBR4 data-burst Table 10 – Data-type-dependent information for AC-4 HBR4 |
| 16 | Table 11 – AC-4 base sampling frequency, AC-4 audio frame rate and corresponding AC-4 HBR4 data-burst repetition period Table 12 – AC-4 HBR4 data-burst sequence and repetition period variance at 29,97, 59,94 and 119,88 fps |
| 17 | Table 13 – AC-4 HBR4 data-burst: meaning of Pc bits 8 to 11 at an IEC 60958 frame rate of 192 kHz Table 14 – AC-4 HBR4 data-burst: meaning of Pc bits 8 to 11 at an IEC 60958 frame rate of 176,4 kHz |
| 18 | 5.3.4 Latency of the AC-4 HBR4 decoder Figure 4 – Latency of AC-4 HBR4 decoding Table 15 – Maximum burst-length values per AC-4 HBR4 data-burst repetition period |
| 19 | 5.3.5 The AC-4 HBR16 data Figure 5 – AC-4 HBR16 data-burst |
| 20 | Table 16 – Data-type-dependent information for AC-4 HBR16 Table 17 – AC-4 base sampling frequency, AC-4 audio frame rate and corresponding AC-4 HBR16 data-burst repetition period |
| 21 | Table 18 – AC-4 HBR16 data-burst sequence and repetition period variance at 29,97, 59,94 and 119,88 fps Table 19 – AC-4 HBR16 data-burst: meaning of Pc bits 8 – 11 at an IEC 60958 frame rate of 768 kHz Table 20 – AC-4 HBR16 data-burst: meaning of Pc bits 8 to 11 at an IEC 60958 frame rate of 705,6 kHz |
| 22 | 5.3.6 Latency of the AC-4 HBR16 decoder Table 21 – Maximum burst-length values per AC-4 HBR16 data-burst repetition period |
| 23 | 5.3.7 The AC-4 LD data Figure 6 – Latency of AC-4 HBR16 decoding |
| 24 | Figure 7 – AC-4 LD data-burst Table 22 – Data-type-dependent information for AC-4 LD Table 23 – AC-4 base sampling frequency, AC-4 audio frame rate and corresponding AC-4 LD data-burst repetition period |
| 25 | 5.3.8 Latency of the AC-4 LD decoder Table 24 – AC-4 LD data-burst sequence and repetition period variance at 119,88 fps Table 25 – AC-4 LD data-burst: meaning of Pc bits 8 to 11 Table 26 – Maximum burst-length values per AC-4 data-burst repetition period |
| 26 | Figure 8 – Latency of AC-4 LD decoding |
| 27 | Figure A.1 – An AC-4 sync frame Annex A (normative) AC-4 sync frame Table A.1 – AC-4 sync frame syntax Table A.2 – framesize() |
| 28 | Table A.3 – AC-4 syncword values |
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