School auditorium sound reinforcement system design description.Sound bar Processor

　　(I. Overview

　　The school auditorium mainly meets the multi-functional requirements of music sound reinforcement, theatrical performances, conference reports, speeches and other cultural and recreational activities. As a high-demand multi-functional auditorium, its acoustic subjective standards are: sound reinforcement should have high definition, high fidelity and high dynamic restoration, and vocals should have sufficient loudness and balance. According to the use requirements of the auditorium sound system of this project, a relatively good sound system solution has been made.

　　(2) Design standards

　　1. Design principles

　　The sound system positioning requirements of this project are scientific, advanced, practical, safe, and meet the needs of performing arts activities. The speakers, mixers, power amplifiers, peripheral equipment, microphones, and wires and connectors used in the system should fully consider the domestic versatility. The system should reach the international advanced and domestic first-class level, and be easily interchangeable Maintenance and maintenance; system signal transmission and interface, system detection, monitoring, and maintenance must be based on practicality and meet the actual environment and usage requirements of the theater; Device is connected.

　　Optimize sound quality

　　Based on the latest research results of physiological and psychological characteristics, this program adopts a variety of research successes and technical means in the field of sound reinforcement to create a "true" and "natural" listening enjoyment for the audience. The following technologies are mainly used:

　　a. Build a sound reinforcement system according to the principle of minimizing sound interference, and use top-level speakers to ensure high-definition and high-fidelity sound reproduction.

　　b. Adopt 24-channel 4-group advanced mixing console to ensure the sound quality of the system.

　　"Humanize"

　　a. The new technology makes the system debugging and operation easier. It is equipped with a linkage remote controller, so that the conference system can be linked, which greatly improves the simplicity of the system while ensuring the sound quality.

　　Reliability and Advancement

　　a. The main products selected are all qualified brand products and have a good reputation in the industry, providing a solid guarantee for use.

　　b. Refer to the latest standard design to ensure that the system will remain advanced in a certain period of time in the future.

　　2. Design basis

　　GB/T50371-2006 "Code for Design of Hall Sound Reinforcement System";

　　GB 4959-95 "Measurement method of hall sound reinforcement characteristics";

　　GBJ 76-84 "Specification for Measurement of Hall Reverberation Time";

　　GYJ25-86 "Acoustic Characteristics Index of Hall Sound Reinforcement System"

　　GB/T 14476-93 "RASTI" method for objective evaluation of hall language intelligibility;

　　WH/T25-2007 "Guidelines for sound reinforcement system engineering in theaters and other performance venues"

　　GB/T15485 "Calculation method of speech intelligibility index"

　　SJ2112 "The optimal electrical connection value of the hall sound reinforcement system equipment interconnection"

　　GB/T15381-94 "Conference system and its audio performance requirements"

　　GB/T14220-93 "Audio-visual video and television equipment and system audio cassette system"

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