On a Simple Technique to Measure the Airborne Noise in a Motor Vehicle using Source Substitution
From various methods of measuring noise of a motor vehicle, there is a lack application on how to obtain the ‘pure’ airborne noise in a vehicle cabin as an important measure to improve the noise control treatment. This project proposes a technique in separating airborne and structure-borne noi...
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| Main Author: | |
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| Format: | Conference or Workshop Item |
| Language: | en |
| Published: |
2011
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| Subjects: | |
| Online Access: | http://eprints.utem.edu.my/id/eprint/7676/1/Airborne_noise_FKM2011.pdf http://eprints.utem.edu.my/id/eprint/7676/ |
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| Summary: | From various methods of measuring noise of a motor vehicle, there is a
lack application on how to obtain the ‘pure’ airborne noise in a vehicle cabin as an
important measure to improve the noise control treatment. This project proposes a
technique in separating airborne and structure-borne noise in a motor vehicle
using sound source substitution method. A cone loudspeaker was used as the
substitution source and the overall transmission loss was measured to achieve this
purpose. It is found that the structure-borne noise is dominant at low frequencies
and airborne noise dominates at high frequency. The intersection frequency
between the two is roughly 400 Hz. |
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