1 General
1.0.1 This code was developed with a view to regulating public address system engineering design and project construction to achieve safety and usability, energy and resource conservation, environmental protection and guaranteed quality.
1.0.2 This code is applicable to the design, construction and acceptance of electroacoustic engineering of newly-built, rebuilt and extended public address system.
1.0.3 Construction engineering related to public address system shall meet the characteristic requirements of architectural acoustics.
1.0.4 The design, construction and acceptance of public address system engineering shall not only comply with this code, but also shall meet those specified in the relevant current standards of the nation.
Contents
1 General
2 Terms
3 Engineering Design of Public Address System
3.1 General Requirements
3.2 Ensured Function
3.3 Electroacooustic Performance Index
3.4 System Construction
3.5 Transmission Line
3.6 Loudspeaker
3.7 Broadcast Power Amplifier
3.8 Public Broadcast Signal Source Equipment
4 Engineering Construction of Public Address System
4.1 General Requirements
4.2 Laying of Broadcast Transmission Lines
4.3 Installation of Loudspeakers
4.4 Installation of Other Equipment
4.5 System Debugging
4.6 System Test Run
5 Electroacooustic Performance Measurement of Public Address System
5.1 General Requirements
5.2 Selection of Measuring Points
5.3 Measurement of Transmission Frequency Response
5.4 Measurement for Sound Field Irregularity
5.5 Ensured Sound Level Measurement
5.6 Leak Out Acoustic Attenuation
5.7 Measurement for Signal to Noise Ratio of System Equipment
5.8 Measurement for Speech Transmission Index of Public Address
6 Acceptance of Public Address System Engineering
6.1 General
6.2 Completion Acceptance
Appendix A Public Address System Engineering Construction Record List
Appendix B Public Address System Engineering Acceptance Table
Explanation of Wording in This Code
List of Quoted Standards
