1.1本规程涵盖确定建筑物内两个相邻（通常相邻）房间之间A加权声级差的统一程序（见1.2）。对于这种做法，声音如何从一个房间传到另一个房间并不重要；测量程序仅涉及评估房间之间的隔音程度。该做法没有评估任何特定的声屏障，例如两个房间共用的聚会墙，也无意这样做。相反，它提供了沿所有路径的有效组合绝缘措施，通过这些路径可以传输声能。 1.2本实践中的声级差是指空间差异- 由于源室内测试声源的操作，源室内和接收室内的平均A加权声级分别为。当适当校正以调整接收室中典型的吸声条件时，该归一化声级差是两个房间之间隔声的可靠单数额定值。 1.3本规程适用于建筑规范编写者和其他与在住宅之间（和内部）提供足够隔音有关的人员。建议该测试程序仅适用于多户住宅、医院的单人和双人病房、汽车旅馆或酒店房间以及小型办公室。 1.4具体而言，本规程的使用应限于天花板高度约为2.6至2.7米（8至9英尺）且水平尺寸高达约6米（20英尺）的房间。8.3.1中给出的传声器位置选择要求可能使在长度或宽度小于约3.3 m（11 ft）的房间内进行测试变得不切实际。 1.5以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。

1.1 This practice covers the establishment of uniform procedures for determination of the A-weighted sound level difference between two neighboring (usually adjoining) rooms in a building (see 1.2). For this practice, it does not matter how the sound reaches one room from the other; the measurement procedure is concerned only with evaluating the degree of acoustical isolation between the rooms. The practice does not evaluate any specific acoustic barrier, such as the party wall common to the two rooms, nor is it intended to do so. Rather, it provides a measure of the effective combined insulation along all of the paths by which acoustical energy may be transmitted. 1.2 Sound level difference for the purposes of this practice is the difference in space-averaged, A-weighted sound levels in the source room and the receiving room, respectively, due to the operation of a test sound source in the source room. When suitably corrected to adjust for typically furnished conditions of sound absorption in the receiving room, this normalized sound level difference is a reliable single-number rating of the acoustical isolation between the two rooms. 1.3 This practice is suitable, and intended, for use by building code writers and others concerned with the provision of adequate acoustical isolation between (and within) dwellings. It is recommended that this test procedure be applied only to multifamily dwellings, to single and double patient's rooms in hospitals, to motel or hotel rooms, and to small offices. 1.4 Specifically, the use of this practice should be restricted to rooms with ceiling heights between approximately 2.6 and 2.7 m (8 and 9 ft) and with horizontal dimensions up to about 6 m (20 ft). The requirements on the selection of microphone locations, given in 8.3.1, may make it impractical to perform the test in rooms with length or breadth less than approximately 3.3 m (11 ft). 1.5 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.