Draft International Standard
ISO/DIS 13472-2
Acoustics — Measurement of sound absorption properties of road surfaces in situ — Part 2: Spot method for reflective surfaces
Reference number
ISO/DIS 13472-2
Edition 2
International Standard
Read sample
ISO/DIS 13472-2
This Draft International Standard is in the enquiry phase with ISO members.
Will replace ISO 13472-2:2010

ISO/DIS 13472-2

ISO/DIS 13472-2
CHF 63
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ISO 13472-2:2010 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. For special purposes, the frequency range can be changed by modifying the dimensions of the system.

The test method is intended for: a) determination of the sound absorption coefficient of semi-dense to dense road surfaces (and, if of interest, also the complex acoustical impedance); b) determination of the sound absorption properties of test tracks in accordance with standards such as ISO 10844 and test surfaces defined in national and international type approval regulations for road vehicles and vehicle tyres; c) verification of the compliance of the sound absorption coefficient of a road surface with design specifications or other requirements.

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