Akustik och bullermätning

Kommittébeteckning: SIS/TK 202/AG 05 (Vägytans egenskaper)
Källa: CEN
Svarsdatum: den 24 jun 2024
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ISO 13473-5:2009 specifies procedures for determining the average depth or level of pavement surface megatexture by measuring the profile curve of a surface and calculating megatexture descriptors from this profile. The technique is designed to give meaningful and accurate measurement and description of pavement megatexture characteristics for various purposes. Since there is an overlap between megatexture and the surrounding ranges, the megatexture descriptors unavoidably have a certain correlation with corresponding measures in those ranges. ISO 13473-5:2009 specifies measurements and procedures which are in relevant parts compatible with those in ISO 13473-1, ISO 8608 and EN 13036-5.

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 8 jul 2024
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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 designspecifications or other requirements.

Kommittébeteckning: SIS/TK 110 (Akustik och buller)
Källa: ISO
Svarsdatum: den 8 jul 2024
Se merSe mindre
 

This document specifies a procedure for determining the magnitude of pavement surface megatexture by measuring the surface profile and calculating a megatexture descriptor from this profile. The technique is designed to give meaningful and accurate measurements and descriptions of pavement megatexture for various purposes, such as for the prediction of the acoustic quality of the pavement or the assessment of the rolling resistance. Since there is an overlap between megatexture and the surrounding ranges, megatexture descriptors unavoidably have a certain correlation with corresponding measures in those ranges. This document specifies measurements and procedures which are in relevant parts compatible with those in ISO 13473-1[16], ISO 8608[1] and EN 13036-5[5].