Acoustic Design Of Multi-functional Small And Medium Stadium

At present, the construction of sports facilities are booming all over the country, the big part of which is the construction of small to medium sized multi-functional sports centers. The main function of a sports center is to host sports fests, to provide a venue for the training of athletes & the daily sports activities of the public. A sports center at the same time has other non-sportive functions. Culture activities, such as rally, performance & exhibitions etc. are often carried out there. In comparison with a normal meeting hall, a sports center is obviously more spacious and has bigger seat capacity. The disadvantage is that the sound lasts much too long, thus causing sound blemish. Considering the limited space in a sports center for the installation of sound-absorbing material, in order to meet the needs of a multi-functional sports center, more attention should be given to the design of architectural acoustics.This article deals with the sports centers with an area of less than 80000 cu.m.. It provides the accurate data of the loudness of sound, the lasting time of sound & the layout of sound distribution, at the same time giving the solutions to acoustic problems, such as the disturbance of noise, the focus of sound, the vibration of echo & no echo at all, etc. It analyses the actual effects of the use of different kinds of sound-absorbing material & equipments in the construction of sports centers, giving examples of acoustic design problems, such as the sound mixing error, the verification of quota of sound mixing time, the measurement of sound absorbing percentage and the combination of acoustic design & decoration aesthetic, etc. Finally, based on the example of the multi-functional sports center in Zhejiang University, Zijinggang campus, the article set forth the measures & ways regarding the acoustic design for the small to medium sized multi-functional sports centers.