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Development of Hybrid Method for Road Noise Analysis
Published October 01, 2007 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
This paper proposes a methodology that is focused on mid-frequency road noise in the frequency range from 100 to 600 Hz and whose core is constituted by a source identification procedure. By means of an inverse method that makes use of the information coming from several microphones, each of the interior areas of the passenger compartment walls is identified as an equivalent source and one can then determine which one is the most contributing to the interior noise under operating condition. This allows a direct and optimized application of countermeasures aimed at the reduction of the interior rolling noise.