多媒体教室混响时间及直达声分布优化  

The Optimization of Reverberation Time and the Distribution of Direct Sound in Multimedia Classrooms

作　　者：郭荣桥 

机构地区：[1]桂林电子科技大学计算机与信息安全学院,广西桂林541001

出　　处：《桂林师范高等专科学校学报》2016年第6期131-135,共5页Journal of Guilin Normal College

摘　　要：用计算机仿真技术分析一实体多媒体教室的混响时间和直达声分布情况,发现影响该多媒体教室语言清晰度的主要原因是低频混响时间过长和直达声分布不均。混响时间的调整通过加装特定吸声材料得以解决;通过对直达声分布的进一步分析,发现音箱之间的声干涉才是影响直达声分布的最主要原因。受线阵列音箱原理启发,对现有音箱进行组合,解决了直达声分布不均的问题。It can be found that an overlong low-frequency Reverberation Time and the uneven distribution of Direct Sound are two main factors affecting the speech articulation of a real multimedia classroom, by using the computer simulation technology to analyze the Reverberation Time and distribution of Direct Sound in it. The Reverberation Time can be adjusted by installing specific sound-absorbing materials, while ＇after further analysis, the interference of sound waves between speakers have the biggest effect on the distribution of Direct Sound. Inspired by the principle of line array speakers, they can combine the existing speakers, which is a solution to the uneven distribution of Direct Sound.

关 键 词：多媒体教室 混响时间 音箱声干涉 线阵列音箱 

分 类 号：O422.2[理学—声学]