This International Standard specifies a method for measuring the sound pressure levels on a measurement surface enveloping a noise source, under essentially free-field conditions near one or more reflecting planes, in order to calculate the sound power level produced by the noise source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the sound power level of the source is calculated, leading to results which have a grade 2 accuracy.
Document updated on 11/19/03 to include errata on last page.
| ANSI : | ANSI Approved |
| Number of Pages : | 31 |
| Published : | 10/18/1999 |
