BS ISO 13472-2:2010
Acoustics. Measurement of sound absorption properties of road surfaces in situ - Spot method for reflective surfaces
Acoustics. Measurement of sound absorption properties of road surfaces in situ - Spot method for reflective surfaces
- Статус документа:
- Отменён
- Формат:
- Электронный (PDF)
- Дата публикации:
- 30 ноября 2010 г.
- ICS:
- 17.140.30
- SKU:
- BS ISO 13472-2:2010
Abstract
1 Scope This part of ISO 13472 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](/search?q=ISO%C2%A010844) 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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