标准编号：ISO 16283-3:2016
中文名称：声学 建筑物和建筑构件的隔声现场测量 第3部分：外墙隔音
英文名称：Acoustics — Field measurement of sound insulation in buildings and of building elements — Part 3: Façade sound insulation
发布日期：2016-02
标准范围
This part of ISO 16283 specifies procedures to determine the airborne sound insulation of fa?adeelements (element methods) and whole fa?ades (global methods) using sound pressure measurements.These procedures are intended for room volumes in the range from 10 m3 to 250 m3 in the frequencyrange from 50 Hz to 5 000 Hz.The test results can be used to quantify, assess, and compare the airborne sound insulation inunfurnished or furnished rooms where the sound field can or cannot approximate to a diffuse field. Themeasured airborne sound insulation is frequency-dependent and can be converted into a single numberquantity to characterize the acoustic performance using the rating procedures in ISO 717-1.The element methods aim to estimate the sound reduction index of a fa?ade element, for example, awindow. The most accurate element method uses a loudspeaker as an artificial sound source. Otherless accurate element methods use available traffic noise. The global methods, on the other hand, aim toestimate the outdoor/indoor sound level difference under actual traffic conditions. The most accurateglobal methods use the actual traffic as sound source. A loudspeaker can be used as an artificial soundsource when there is insufficient level from traffic noise inside the room. An overview of the methods isgiven in Table 1.The element loudspeaker method yields an apparent sound reduction index which, under certaincircumstances, can be compared with the sound reduction index measured in laboratories in accordancewith ISO 10140. This method is the preferred method when the aim of the measurement is to evaluatethe performance of a specified fa?ade element in relation to its performance in the laboratory.The element road traffic method will serve the same purposes as the element loudspeaker method. Itis particularly useful when, for different practical reasons, the element loudspeaker method cannot beused. These two methods will often yield slightly different results. The road traffic method tends toresult in lower values of the sound reduction index than the loudspeaker method. In Annex D, this roadtraffic method is supplemented by the corresponding aircraft and railway traffic methods.The global road traffic method yields the real reduction of a fa?ade in a given place relative to a position2 m in front of the fa?ade. This method is the preferred method when the aim of the measurement is toevaluate the performance of a whole fa?ade, including all flanking paths, in a specified position relativeto nearby roads. The result cannot be compared with that of laboratory measurements.The global loudspeaker method yields the sound reduction of a fa?ade relative to a position that is 2 min front of the fa?ade. This method is particularly useful when, for practical reasons, the real sourcecannot be used; however, the result cannot be compared with that of laboratory measurements.
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