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首页> 外文期刊>Applied Acoustics >Analysis of a caustic formed by a spherical reflector: Impact of a caustic on architectural acoustics
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Analysis of a caustic formed by a spherical reflector: Impact of a caustic on architectural acoustics

机译：由球形反射器形成的腐蚀性分析：腐蚀性对建筑声学的影响

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摘要

Focusing sound in rooms intended for listening to music or speech is an acoustic defect. Design recommendations provide remedial steps to effectively prevent this. However, there is a category of objects of high historical or architectural value in which the sound focus correction is limited or even abandoned. This also applies to indoor or outdoor concert shells, installations for teaching and acoustic presentations, etc. The main content of this article is deriving the equation of a caustic created by a concave hemispherical reflector with a source of rays situated at a given position. It is explained why under real conditions, both indoors and outdoors, no clear caustic resulting from the geometric approach is observed. Instead, its blurred form is perceived, usually limited to the caustic cusp taking the form of a point-like sound focus. This can be attributed to the effect of diffraction and interference, the impact of which on a caustic is analyzed in the paper. (C) 2020 Elsevier Ltd. All rights reserved.
机译：用于聆听音乐或演讲的房间的聚焦声是一种声学缺陷。设计建议提供有效防止此内容的补救措施。然而，存在一类高历史或架构价值的对象，其中声音焦点校正有限甚至被遗弃。这也适用于室内或室外音乐会壳牌，用于教学和声学演示的装置等。本文的主要内容是由凹入半球形反射器的粗烧蚀器的等式导出，其中射线源位于给定位置。它被解释为什么在室内和户外的真实条件下，观察到几何方法没有明确腐蚀性。相反，它被认为是模糊的形式，通常限于腐蚀性的尖端，采取点状声音焦点的形式。这可以归因于衍射和干扰的影响，在纸上分析了在苛性碱上的影响。 （c）2020 elestvier有限公司保留所有权利。

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