Abstract Indoor acoustic comfort under existing outdoor noise generally depends on the sound insulation characteristics of the building facade. The importance of the acoustic classification of dwelling facade among the classification of other building elements was presented in a COST Action report and by developing the ISO/AWI TS 19488 project. Two approaches are used to describe the facades classification in Europe: first (indirect), establishing the requirements by indoor sound level and, second (direct), specifying the lowest permissible value for the facade sound insulation descriptor depending on the outdoor noise level. Since 2003, the estimated pre-completion acoustic measurement results of dwellings have made it possible to collect sufficient representative statistics of the relationship between building facade sound insulation and the environmental noise data. Simultaneous measurements of noise levels inside the dwelling and the outdoor noise levels on the dwelling’s facade give the correlation between noise levels outdoors and indoors as a function of the facade sound insulation. Measurement data were collected for the typical outdoor environment in the main Lithuanian agglomerations where noise levels range from 46 dBA to 70 dBA. Sound insulation of building facades was expressed in D2m,nT,w and ranged from 30 dB to 50 dB in four equal groups. A statistically objective procedure for the acoustic classification of facades was developed using the obtained regressions between the noise levels outside and inside the premises for each of the facade groups.

中文翻译：

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使用统计方法对建筑立面进行声学分类

摘要 现有室外噪声下的室内声学舒适度一般取决于建筑立面的隔声特性。在 COST 行动报告和 ISO/AWI TS 19488 项目的开发中，住宅立面的声学分类在其他建筑元素的分类中的重要性得到了体现。欧洲使用两种方法来描述外墙分类：第一（间接），根据室内声级确定要求，第二（直接），根据室外噪音水平指定外墙隔音描述符的最低允许值。自 2003 年以来，估计的住宅竣工前声学测量结果使得收集足够的具有代表性的建筑立面隔音与环境噪声数据之间关系的统计数据成为可能。同时测量住宅内的噪音水平和住宅外墙的室外噪音水平，给出了室外和室内噪音水平之间的相关性，作为外墙隔音的函数。为立陶宛主要城市群的典型室外环境收集了测量数据，其中噪声水平范围为 46 dBA 至 70 dBA。建筑立面的隔音用 D2m,nT,w 表示，范围从 30 dB 到 50 dB，分为四个相等的组。