声学.表面的声音扩散特性.第1部分:自动声场中定向扩散系数的测定

[中文适用范围]： ISO 17497 的这一部分规定了测量表面定向扩散系数的方法。 扩散系数用反射极性分布的均匀性来表征从表面反射的声音。 扩散系数是一种质量度量，旨在告知生产者和用户有意或无意地扩散声音的表面。 它还可以向开发人员和用户提供几何房间声学模型。 扩散系数不适合直接用作几何房间声学模型中当前扩散算法的输入。 ISO 17497 的这一部分详细介绍了自由场表征方法。 [外文原描述]： This part of ISO 17497 specifies a method of measuring the directional diffusion coefficient of surfaces. The diffusion coefficient characterizes the sound reflected from a surface in terms of the uniformity of the reflected polar distribution. The diffusion coefficient is a measure of quality designed to inform producers and users of surfaces that, either deliberately or accidentally, diffuse sound. It can also inform developers and users of geometric room acoustic models. The diffusion coefficient is not suitable for direct use as an input to current diffusion algorithms in geometric room acoustic models. This part of ISO 17497 details a free-field characterization method.