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DIN/VDI Standards Committee Acoustics, Noise Control and Vibration Engineering

Abstract

This document specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for the one-third octave band frequencies ranging from 250 Hz to 1 600 Hz under normal incidence conditions. If necessary for practical applications the diameter of the tube can be reduced to 80 mm. This will increase the upper boundary of the frequency range to 2 000 Hz one-third octave band (see 5.4) but reduces the area under test. The test method is intended for the following applications: — determination of the sound absorption coefficient (and, if of interest, also the complex acoustical impedance) of semi-dense to dense road surfaces; — determination of the sound absorption properties of test tracks according to ISO 10844[2] or other similar standards and test surfaces defined in national and international type approval regulations for road vehicles and their tyres; — verification of the compliance of the sound absorption coefficient of a road surface with design-specifications or other requirements.

Begin

2018-12-04

Planned document number

DIN ISO 13472-2

Project number

00101071

Responsible national committee

NA 001-01-05 AA - Measurement of sound exposition on road vehicles, including measurements inside the passenger compartment and at the workplace  

Responsible international committee

ISO/TC 43/SC 1/JWG 33 - Joint TC 43/SC 1-TC 22 WG : Measuring method for comparing traffic noise on different road surfaces  

previous edition(s)

Acoustics - Measurement of sound absorption properties of road surfaces in situ - Part 2: Spot method for reflective surfaces (ISO 13472-2:2010)
2010-12