Abstract The acoustic quality of long spaces is often a problem confronting the designer. Ensuring adequate speech reception in relation to sound alarm systems in such spaces is one of the key factors determining the acoustic quality of a space. The aim of this paper is to present an initial, index-based method for the assessment of the acoustic quality of long spaces during the design process, taking into account selected architectural and acoustic parameters. The development of the method is based on acoustic testing, which was carried out in a number of subway stations. The acoustic quality of long spaces is determined by speech intelligibility, which is mainly influenced by reverberation time within an enclosure. This is why testing was focussed on reverberation time and speech intelligibility. The enclosures were selected according to a variety of cross-sectional shapes and acoustic absorption characteristics. The presented method is expected to provide an easy-to-use assessment of long spaces designed in terms of speech intelligibility, as required for sound alarm systems, conforming among other things, to applicable standards. By applying this method, it is possible to increase the safety of long enclosures’ occupants and reduce or avoid costs associated with improving the acoustic conditions of ready-to-use long enclosures.

中文翻译：

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设计师对长地下围护结构的初步声学评估

摘要 长空间的声学质量往往是设计者面临的问题。确保与此类空间中的声音警报系统相关的足够语音接收是决定空间声学质量的关键因素之一。本文的目的是提出一种初始的、基于指标的方法，用于在设计过程中评估长空间的声学质量，同时考虑选定的建筑和声学参数。该方法的开发基于在多个地铁站进行的声学测试。长空间的音质由语音清晰度决定，语音清晰度主要受外壳内混响时间的影响。这就是为什么测试侧重于混响时间和语音清晰度。外壳是根据各种横截面形状和吸声特性选择的。所提出的方法有望对根据语音清晰度设计的长空间进行易于使用的评估，如声音警报系统所要求的那样，除其他外，符合适用标准。通过应用这种方法，可以提高长围栏居住者的安全性，并减少或避免与改善即用型长围栏的声学条件相关的成本。