BS ISO 13472-2:2010
Current
The latest, up-to-date edition.
Acoustics. Measurement of sound absorption properties of road surfaces in situ Spot method for reflective surfaces
Hardcopy , PDF
English
11-30-2010
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Test equipment
6 Measurement and analysis procedure
7 Positioning of the equipment
8 Measurement and analysis procedure
9 Measurement uncertainty
10 Test report
Annex A (normative) - Correction on base of reference
measurement
Annex B (informative) - Measurement uncertainty
Annex C (informative) - Sketch of in-situ test fixture
Annex D (informative) - Example of a test report
Bibliography
Defines 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 1600 Hz under normal incidence conditions.
| Committee |
EH/1/2
|
| DevelopmentNote |
Supersedes 07/30164074 DC. (11/2010)
|
| DocumentType |
Standard
|
| Pages |
32
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
This part of ISO13472 specifies a test method for measuring in situ the sound absorption coefficient of road surfaces for the one-third-octave-band frequencies ranging from 250Hz to 1600Hz 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: determination of the sound absorption coefficient of semi-dense to dense road surfaces (and, if of interest, also the complex acoustical impedance); determination of the sound absorption properties of test tracks in accordance with standards such as ISO10844 and test surfaces defined in national and international type approval regulations for road vehicles and vehicle tyres; verification of the compliance of the sound absorption coefficient of a road surface with design specifications or other requirements.
| Standards | Relationship |
| ISO 13472-2:2010 | Identical |
| ASTM E 1050 : 2012 : REDLINE | Standard Test Method for Impedance and Absorption of Acoustical Materials Using a Tube, Two Microphones and a Digital Frequency Analysis System |
| ISO 13472-1:2002 | Acoustics Measurement of sound absorption properties of road surfaces in situ Part 1: Extended surface method |
| ISO 354:2003 | Acoustics — Measurement of sound absorption in a reverberation room |
| ISO 10844:2014 | Acoustics Specification of test tracks for measuring noise emitted by road vehicles and their tyres |
| ISO 7188:1994 | Acoustics Measurement of noise emitted by passenger cars under conditions representative of urban driving |
| ISO 10534-2:1998 | Acoustics — Determination of sound absorption coefficient and impedance in impedance tubes — Part 2: Transfer-function method |
| IEC 61260:1995 | Electroacoustics - Octave-band and fractional-octave-band filters |
| ISO 10534-1:1996 | Acoustics Determination of sound absorption coefficient and impedance in impedance tubes Part 1: Method using standing wave ratio |
| ISO/IEC Guide 98-3:2008 | Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995) |
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