可调混响音乐厅的仿真与分析  

The Simulation and Analysis of Concert Hall with Adjustable Reverberation Time

作　　者：唐凤台 孟子厚[1] TANG Feng-tai;MENG Zi-hou(Communication Acoustic Laboratory,Communication University of China,Beijing,100024,China)

机构地区：[1]中国传媒大学传播声学研究所,北京100024

出　　处：《中国传媒大学学报（自然科学版）》2018年第3期55-59,共5页Journal of Communication University of China：Science and Technology

摘　　要：利用声学仿真软件Odeon,对某座可调混响音乐厅进行建模仿真,通过调节耦合空间门开启的位置、大小以及厅堂内吸声帘幕的覆盖面积,得到不同状态下的房间脉冲响应,从而获得该模型的声学参数—混响时间T_(30)、音乐明晰度C_(80)、清晰度D_(50)和侧向能量因子LF_(80)等。结合该座音乐厅仿真模型,考察不同状态下声学参数的规律。结果显示:随着耦合空间门的开启程度增大,音乐厅的混响时间逐渐增长;随着厅堂内吸声帘幕覆盖面积的增大,音乐厅的混响时间逐渐减小。最终得到该座音乐厅的混响时间范围是1.2s^2.3s。验证了利用耦合空间和吸声帘幕可以实现厅堂的"多功能"用途。Modeling and simulation of the concert hall with adjustable reverberation time,by the acoustic simulation software Odeon.Through controlling the aperture location of coupled space,size and the coverage area of sound absorption curtains in concert hall,the different types of room impulse responses are acquired,including some acoustic parameters,such as reverberation time(T 30),music clarity(C 80),definition(D 50),early lateral energy fraction(LF 80)and so on.Combined with the concert hall simulation model,the law of acoustic parameters in different states is investigated.The results showed that as the aperture size of coupled space increases,the reverberation time of the concert hall will increase gradually,while it decreases with the increase of the coverage area of sound absorption curtains.Ultimately getting the range of the reverberation time is 1.2s^2.3s.It is proved that utilize coupled space and sound absorption curtain can realize the multi-function of the hall.

关 键 词：可调混响 耦合空间 吸声帘幕 脉冲响应 

分 类 号：TN912[电子电信—通信与信息系统]