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
ASTM E2235 Standard Test Method for Determination of Decay Rates for Use in Sound Insulation Test Methods
ASTM E2235隔声试验方法中衰减率测定的标准试验方法
Several ASTM test methods to evaluate the sound-insulating properties of building elements require the measurement of room sound absorption as part of the procedure. The room sound absorption in these standards appears in an equation in the form 10 log (x/A), where x is a quantity with the same units as A, m2. Room sound absorption is calculat
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