DS DS/EN ISO 9614-2
DS DSEN SO 9614-2 1997-JAN-15 Acoustcs - Determnaton of sound power levels of nose sources usng sound ntensty - Part 2 Measurement by scannng
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This standard specifies a method for measuring the component of sound intensity normal to a measurement surface which is chosen so as to enclose the noise source(s) of which the sound power level is to be determined.