初始声能分布对具有扩散反射边界的房间中声场松弛的影响(英文)

Effect of Initial Energy Distribution on Relaxation of Sound Field in a Room with Diffusely Reflecting Boundaries

为了研究在给定房间中声场松弛的模式是否惟一的问题,文中在一个具有完全扩散反射边界的长矩形房间中,于不同位置设置声源以提供不同的初始声能分布,初步研究了房间初始声能分布对声场松弛的影响.研究表明,不同的初始声能分布引起的声场松弛模式不同,甚至有很大差异.因此可以得出结论:一个给定的房间中具有多种声场松弛的模式.

For answering the question that whether the relaxation mode of sound field in a given room with diffusely reflecting boundaries is unique, in this paper, the effect of initial energy distribution on the sound field relaxation is primarily studied in a rectangular long room by setting a sound source at different positions. It shows that the sound field relaxes differently and even quite much, depending on the initial energy distribution in the room. Thus, the non-unique relaxation mode of sound field in a given room is convinced.