Abstract

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.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.

Begin

2021-10-11

WI

00211208

Planned document number

DIN EN ISO 26101-2

Project number

00101137

Responsible national committee

NA 001-01-04 AA - Noise emission of machinery and equipment; measurement, reduction, data collection  

Responsible european committee

CEN/TC 211 - Acoustics  

Responsible international committee

ISO/TC 43/SC 1/WG 28 - Basic machinery noise emission standards  

draft standard

Acoustics - Test methods for the qualification of the acoustic environment - Part 2: Determination of the environmental correction (ISO/DIS 26101-2:2023); German and English version prEN ISO 26101-2:2023
2023-02
Order from DIN Media