室内早期反射声分布研究

Study on Distribution of Early ReflectedSound in Room Acoustics

在室内声学中,早期反射声对音质有着重要的影响。因此在反射声布满听众席的过程中形成各界面上的反射区域是音质设计中控制和利用早期反射声的依据。本文利用虚声源法构造声像空间。对室内声场中早期反射声线的方向,历程,延迟时间和各界面上的反射区域用解析法进行分析,推导出各前次反射面的边界座标和实用的计算表格,使之走向定量化设计。

The early reflected sound is a critical factor in room acoustics. In this paper, by means of fictitious sound source, the orientation, course and delay time of early reflected sound rays as well as reflecting areas on interfaces in room acoustic field are analyzed. The coordinates of early reflecting area boundary and practical diagrams have been formed. It is beneficial to quantitative design.