ASTM E2235隔声试验方法中衰减率测定的标准试验方法
日期:2012-02-08 10:50
nts of the companion standard. The measured decay rates shall still be used only to calculate the logarithm of the room absorption.
1. Scope
1.1 This test method covers the measurement of sound decay rate in rooms and the calculation of the sound absorption of the room and its contents. The sound absorption so calculated may be used in calculations in sound insulation test methods.
1.2 The method shall be used only in conjunction with other test methods where the logarithm of the sound absorptio
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