Acoustics—Measurement of sound insulation in buildings and of building elements—Part 5:Field measurements of airborne sound insulation of facade elements and facades
IDT ISO 140-5:1998
全国声学标准化技术委员会(SAC/TC 17)
GB/T 19889的本部分规定了两套分别测量建筑物整个外墙与外墙构件空气声隔声的方法（整墙测量法与构件测量法），其中构件测量法用于测定外墙构件，例如窗户的隔声量。最精确的构件测量法是用扬声器作为声源的方法；其他精确性略差的构件测量法为采用现场交通噪声作为声源的方法。另一方面，整墙测量法旨在确定已有交通条件下的户外和户内声压级差。最精确的整墙测量法是利用实际的交通噪声作为声源。此外，也可采用扬声器作为人工声源
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