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GY/T 187-2002 (GYT 187-2002)

GY/T 187-2002_English: PDF (GYT187-2002)
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GY/T 187-2002English279 Add to Cart 3 days Serial multichannel audio digital interfance GY/T 187-2002 Valid GY/T 187-2002

BASIC DATA
Standard ID GY/T 187-2002 (GY/T187-2002)
Description (Translated English) Serial multichannel audio digital interfance
Sector / Industry Radio, Film & TV Industry Standard (Recommended)
Classification of Chinese Standard M64
Classification of International Standard 33.160
Word Count Estimation 11,179
Date of Issue 2002-12-20
Date of Implementation 2003-02-01
Adopted Standard AES 10-1991, IDT
Drafting Organization The Central People's Broadcasting Station
Administrative Organization National Radio and Television Standardization Technical Committee
Summary This standard specifies the multi-channel audio digital serial interface (MADI) data structure and electrical characteristics. This standard applies to coaxial cable or fiber optic cable on a linear representation of the sampling frequency range of 32kHz ~ 48kHz (�� 12. 5%), a resolution of 24 bits per channel, 56 -channel digital audio serial transmission. This standard is only supported from a transmitter to a receiver point-to- point connection.

GY/T 187-2002
Serial multichannel audio digital interfance
People's Republic of China Radio, Film and Television Industry Standard
GY
Multi-channel audio digital serial interface
Serial multichannel audio digital interface
(AES10-1991 (ANSI S4.43-1991), IDT)
2002-12-20 released
2003-02-01 Implementation
Published by the State Administration of Radio, Film and Television
Contents
Foreword ... II
1 Scope ... 1
2 Normative references ... 1
3 Terms and definitions ... 1
4 Format ... 1
5 Sampling frequency and bit rate ... 5
6 Synchronization ... 5
7 Electrical characteristics ... 6
Appendix A (informative) Example of link coding ... 8
Foreword
This standard is equivalent to AES10-1991 (ANSI S4.43-1991) "Multi-channel Audio Digital Serial Interface", English name. Serial
multichannel audio digital interface (MADI).
This standard was developed for the design, production, acceptance, operation, maintenance, and use of multi-channel audio digital serial interfaces and related equipment systems.
Use, especially multi-channel digital audio program production and exchange, and then improve the broadcast quality and level, providing a technical basis.
Appendix A to this standard is an informative appendix.
This standard is under the jurisdiction of the National Radio and Television Standardization Technical Committee.
This standard was drafted. Central People's Broadcasting Station.
The main drafters of this standard. Lin Qiangjun, Guan Yi, and Sun Haihong.
Multi-channel audio digital serial interface
1 Scope
This standard specifies the data composition and electrical characteristics of the multi-channel audio digital serial interface (MADI).
This standard applies to linear or coaxial cable or fiber optic cable. The sampling frequency ranges from 32kHz to 48kHz (± 12.5%).
56-channel digital audio serial transmission with a resolution of 24 bits per channel (see Figure 1).
This standard only supports point-to-point connections from a transmitter to a receiver.
2 Normative references
The clauses in the following documents have become the clauses of this standard after being referenced. For dated references, all subsequent
Neither amendments (excluding errata) or revised versions are applicable to this standard, however, parties who have reached an agreement under this standard are encouraged to study
Is the latest version of these files available? For undated references, the latest version applies to this standard.
GY/T 158-2000 studio digital audio signal interface
3 terms and definitions
The following terms and definitions apply to this standard.
3.1
Audio sample data
An audio signal that is periodically sampled, quantized, and digitized in two's complement form.
3.2
Channel
A set of audio sample data corresponding to a signal transmitted within any period of the sampling frequency of the data source, which is accompanied by other
Data bits.
3.3
Two-channel format
GY/T 158-2000 bit, block and sub-frame structure (without preamble).
3.4
Frame
Numbered 56-channel sequence from 0 to 55, each frame contains the audio sample data transmitted in any sampling period
Processing and related data. Start with the first bit of channel 0 as the frame.
3.5
Link
Connection of a single serial multi-channel audio digital transmitter and a single multi-channel audio digital receiver.
4 Format
4.1 Frame Format
Each frame contains 56 channels, represented by the numbers 0 to 55. Starting from channel 0, the channels in the frame are arranged continuously. The frame format is shown in Figure 2.
Show.
4.2 Channel format
Each channel contains 32 bits. 24 of which are allocated to audio or other data defined by audio/non-audio tags, with another 4
This bit is used to indicate the valid bit (V), user data bit (U), status data bit (C), and parity of the GY/T 158-2000 two-channel interface.
Check bit (P), the other 4 bits are used for mode confirmation. GY/T 158-2000 two-channel format is reserved here. The channel format is shown in Figure 3.
MA
DI
RZ
RX
4.2.1 Mode