A new method to measure vehicle pass-by noise in a finite dimensioned semi-anechoic room

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2010

Author

Arslan, Ersen

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In this study, a method to predict vehicle pass-by noise in a finite dimensioned, semi-anechoic chamber with chassis dynamometer has been developed. Vehicle noise has been modeled as the summation of the individual contributions regarding the principal noise components, namely, engine including air intake, front tire and rear tire noises. This method employs wave propagation, Doppler shift, and time delay in the estimation of the sound pressure due to each component at points of interest specified by relevant standards. An acoustical simulation model has been developed in MaTLAB environment. The model has been applied on two different vehicles. Finally, the predicted sound pressure values are found to be in good agreement with the corresponding values acquired in outdoor measurements addressed in ISO 362 for vehicle pass-by noise measurement standard.

Subject Keywords

Automobiles, Automobiles, Mechanical engineering.

URI

http://etd.lib.metu.edu.tr/upload/12612521/index.pdf
https://hdl.handle.net/11511/20103

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

E. Arslan, “A new method to measure vehicle pass-by noise in a finite dimensioned semi-anechoic room,” M.S. - Master of Science, Middle East Technical University, 2010.