ISO 26101-2:2024

Acoustics — Test methods for the qualification of the acoustic environment — Part 2: Determination of the environmental correction

This document specifies methods for qualifying an environment that approximates to an acoustic free field near one or more reflecting planes. The goal of the qualification is to determine the environmental correction K2 , which is used to correct for reflected sound when determining the sound power level or sound energy level of a noise source from sound pressure levels measured on a surface enveloping the noise source (machinery or equipment) in such an environment.

In practice, the K2 ?value determined will be a function of both the reflected sound from the test environment and the shape and size of the measurement surface used for the K2 ?determination. For the purposes of this document and the documents that refer to it, the differences between K2 ?values determined with different measurement surfaces are assumed to be included in the stated measurement uncertainty for the test method.

Edition	2024
Standard Part No	2
Published Date	2024
Published By	International Standardization Organisation
Page Count	15