Abstract
A technique based on the reciprocity principle has been developed for measuring mechanical-acoustic transfer functions for vehicle road noise induced by forced displacement inputs from the suspension. With this technique, acoustic excitation is applied to the car body and the resulting constraint force of the tires are measured by means of tri-axial load cells with a loudspeaker installed at the driver's ear position. This paper will first explain the mechanical-acoustic reciprocity principle corresponding to forced displacement excitation. Empirical examples will then be given of applications of this technique to the reduction of low-frequency road noise of a passenger car. The results indicated that the reciprocity technique is applicable to a fully trimmed vehicle that includes an engine and suspension and is often cheaper and more convenient than the equivalent shaker-based excitation method for measuring mechanical-acoustic transfer functions.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
