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
ed from the decay rate using Eq 1.
The requirements of this standard have been chosen so the uncertainty associated with the measurement of room sound absorption will be acceptably small so long as the logarithm of the absorption is being used in calculations.
Other test methods should specify explicitly that they make use of this test method.
Where measurement requirements in the parent standard differ from those given here, the requirements in the parent standard shall be satisfied.
This test
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10/30 03:54