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各国的隔声评价法大致区别有四种:(1)隔声量法,(2)隔声余值法,(3)固定曲线法,(4)单一声级法。各国对空气隔声的要求已基本一致且和人的感觉相符,但在撞击声标准方面不仅差别较大,而且和人的感觉联系还不密切。为了保证居住环境合于要求,大多数国家都以现场标准作为依据。测量数据的归一化即使是通常的房间,由于修正项的不同其修正值差也可能达到3dB。因此不如不作修正,这样既简单而且更能反映实际居住情况。至于频带允许最大偏差各国差别较大,尚无一致看法。
There are four broad differences in sound insulation evaluation methods in different countries: (1) Sound insulation quantity method, (2) Sound insulation residual value method, (3) Fixed curve method, and (4) Single sound level method. The requirements for sound insulation of air in various countries are basically the same and correspond to people’s feelings. However, there is not only a great difference in percussive sound standards, but also the connection with people’s feelings is not yet close. In order to ensure that living conditions meet the requirements, most countries are based on site standards. Normalization of measurement data Even in a normal room, the correction value difference may reach 3dB due to the correction term. Therefore, it is better not to make amendments so that it is simpler and better reflects the actual living conditions. As for the band to allow the maximum deviation varies widely across countries, there is no consensus.