In-situ noise level mapping for vehicle floor carpet

Dilla, E, Wang, X and Subic, A 2009, 'In-situ noise level mapping for vehicle floor carpet', International Journal of Vehicle Noise and Vibration, vol. 5, no. 3, pp. 193-204.


Document type: Journal Article
Collection: Journal Articles

Title In-situ noise level mapping for vehicle floor carpet
Author(s) Dilla, E
Wang, X
Subic, A
Year 2009
Journal name International Journal of Vehicle Noise and Vibration
Volume number 5
Issue number 3
Start page 193
End page 204
Total pages 12
Publisher Inderscience Publishers
Abstract Noise level mapping of test vehicles' floor carpets was undertaken for three frequency bands, that is, low-(<500 Hz), middle- (500-2,000 Hz) and high-frequency regions (> 2,000 Hz) to compare noise control treatment performance and effectiveness. On-road tests including idling conditions and constant speed tests of 40, 60 and 80 kph were undertaken. Noise level contour maps indicate that the luxury class test vehicle is most affected by very low-frequency noise but exhibit superior performance in the middle- and highfrequency ranges. The other two test cars are vulnerable to middle- and high-frequency noise incursion at moderately high levels. Through comparison of transmission loss measurements, using an impedance tube, critical carpet sections were identified for further noise control treatment on each carpet. Sound pressure level measurements from driver's ear level location indicate that the luxury class test vehicle has the superior in-cabin acoustic package.
Subject Automotive Engineering Materials
Automotive Engineering not elsewhere classified
Keyword(s) automotive carpet systems
automotive acoustical carpet
vehicle sound packages
automotive interior noise
scanned near-field acoustic holograph
vehicle benchmark testing
noise level mapping.
DOI - identifier 10.1504/IJNV.2009.031026
Copyright notice Copyright © 2009 Inderscience Enterprises Ltd.
ISSN 1479-1471
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