GSO ISO 362-3:2021

Gulf Standard   Current Edition
· Approved on 01 July 2021 ·

Measurement of noise emitted by accelerating road vehicles — Engineering method — Part 3: Indoor testing M and N categories

Noise emitted by means of transport
Including road noise, railway noise, harbour noise and airport noise

GSO ISO 362-3:2021 Files

English 51 Pages
Current Edition Reference Language
85.35 OMR

GSO ISO 362-3:2021 Scope

ISO 362-3:2016 specifies an engineering method for measuring the noise emitted by road vehicles of categories M and N by using a semi anechoic chamber.

The specifications are intended to achieve an acoustical correlation between testing the exterior noise of road vehicles in a semi anechoic chamber and outdoor testing as described in ISO 362-1.

ISO 362-3:2016 provides all necessary specifications and procedures for indoor testing to obtain results which are comparable to typical run-to-run variations of measurements in today's type approval tests.

It provides a method designed to meet the requirements of simplicity as far as they are consistent with the reproducibility of results under the operating conditions of the vehicle.

NOTE 1 The results obtained by this method give an objective measure of the noise emitted under the specified conditions of test. It is necessary to consider the fact that the subjective appraisal of the noise annoyance of different classes of motor vehicles is not simply related to the indications of a sound measuring system. As annoyance is strongly related to personal human perception, physiological human conditions, culture, and environmental conditions, there is a large variation and annoyance is therefore not useful as a parameter to describe a specific vehicle condition.

NOTE 2 If measurements are carried out in rooms which do not fulfill the requirements stated in ISO 362-3 :2016, the results obtained can deviate from the results using the specified conditions.

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