ISO 13472-1:2022
International Standard
Current Edition
Approved on
05 January 2022
Acoustics — Measurement of sound absorption properties of road surfaces in situ — Part 1: Extended surface method
ISO 13472-1:2022 Files
null Pages
Current Edition
ISO 13472-1:2022 Scope
This document describes a test method for measuring in situ the sound absorption coefficient of road surfaces as a function of frequency in the range from 250 Hz to 4 kHz.
Normal incidence is assumed. However, the test method can be applied at oblique incidence although with some limitations (see Annex F). The test method is intended for the following applications:
— determination of the sound absorption properties of road surfaces in actual use;
— comparison of sound absorption design specifications of road surfaces with actual performance data of the surface after completion of the construction work.
The complex reflection factor can also be determined by this method.
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