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AASHTO TP 76-12 Standard Method of Test for Measurement of Tire/Pavement Noise Using the On-Board Sound Intensity (OBSI) Method
standard by American Association of State and Highway Transportation Officials, 2012
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Full Description
This test method describes the procedures for measuring tire/pavement noise using the on-board sound intensity (OBSI) method and the procedures for verification of the measurement system. The test method provides an objective measure of the acoustic power per unit area at points near the tire/pavement interface.The OBSI measurement method described herein permits the tire/pavement noise to be measured directly and allows various pavements and textures to be directly compared.
This method is expected to be subject to revision as experience increases and research results are implemented.