Lighting, sound and acoustic decoration design and installation of multi-functional lecture hall

The multifunctional lecture hall is a multifunctional meeting place for enterprises, institutions, and colleges to hold various reports, work meetings, academic lectures, ideological education and cultural activities, and foreign exchanges.
With the continuous development of multimedia technology, people are no longer satisfied with the simple conference and communication functions of the multifunctional lecture hall in the traditional era. The construction of the multimedia environment designed for the multifunctional lecture hall is divided into the following eight subsystems: indoor acoustic decoration design, large screen display system design, sound reinforcement system design, intelligent control system design, recording and editing system design, film and television lighting system design, sound-absorbing seat system design, acoustic anechoic air conditioning system design, etc., which are eight interdependent and comprehensive system collections. Through the use of multimedia technology, people can get realistic display, clear sound, high-fidelity audio and video recording, efficient and convenient control and use without being restricted by space and time, and work in a perfect light and sound environment, so as to achieve complete, efficient, and timely information communication and exchange effects, and achieve the realm of "high speed, high efficiency, and high return".
According to the purpose, lecture halls can be divided into academic lecture halls, multimedia lecture halls, large lecture halls, and classrooms; according to the reporting method, they can be divided into natural sound and sound reinforcement. As a lecture hall for international conferences, it is also necessary to have facilities for simultaneous interpretation and impromptu questions. The scale of the lecture hall is usually around 100 to 500 listeners, and most of them have a seating capacity of 150 to 350. The volume is in the range of 400 to 2500m3.

In the acoustic design of the lecture hall, the indicators usually required to be achieved are as follows:
◇ Lecture hall reverberation time: The mid-frequency reverberation time is controlled in the range of 0.8 to 1.0 seconds. For the use of sound reinforcement system and simultaneous interpretation system, it can be appropriately shortened, and the frequency characteristics of the reverberation time are close to flat.
◇ Lecture hall sound field uniformity: When reporting in natural sound, the sound field unevenness at 500Hz in the hall is not greater than ±3.5dB; when using a sound reinforcement system, it should be less than ±3.0dB.
◇ Background noise level of lecture hall: For natural sound lecture hall, the noise level in the hall shall not exceed 30dBA; when using sound reinforcement system, it shall be lower than 40dBA.
◇ Eliminate various acoustic defects in lecture hall: According to the plane and facade forms of lecture hall, analyze the possible acoustic defects such as echo, flutter echo, sound focusing, etc., and take measures to improve and avoid them in decoration design and acoustic design.
The process design content of lecture hall and activity center mainly includes sight distance, viewpoint, viewing angle, auditorium shape, screen setting, seat arrangement, ground slope, etc. tinue to leverage its strengths in talent, technology, and service to contribute to the brilliant future of the radio and television industry.