ASTM E966建筑物表面和表面构件气载声音隔离的现场测量标准指南
日期:2012-02-08 11:52
e a single fa�ade is exposed to the outdoor sound, or a fa�ade element such as a door or window has much lower transmission loss than the rest of the fa�ade, an outdoor-indoor transmission loss, OITL(), or apparent outdoor-indoor transmission loss, AOITL(), may be measured using a loudspeaker source. These results are a function of the angle of incidence of the sound field. By measuring with sound incident at many angles, an approximation to the diffuse field transmission loss as measured between t
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