Vibration induced erroneous signal in tyre/road noise measurement with close-proximity method

Y. K. Lam, Chi Kin Randolph Leung, W. T. Hung

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

The possibility of microphone vibrat ion in introducing error to tyre/road measurement with Close- Proximity Method (CPX) is studied. Results show that the measuring microphone mounted in the acoustic trailer produce erroneous signal when it is set to vibrate. The vibration- induced error is added to the measured tyre/road noise. This paper attempts to correct the measured noise level by filtering the vibrationinduced erroneous signal using "vibration to erroneous signal" correction factors. A laboratory test is conducted to find the relation between microphone vibration and the erroneous signal. The vibration information in on-road CPX measurement is collected. A case study applying the developed correction procedures is demonstrated.
Original languageEnglish
Title of host publication40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Pages565-570
Number of pages6
Volume1
Publication statusPublished - 1 Dec 2011
Event40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011 - Osaka, Japan
Duration: 4 Sep 20117 Sep 2011

Conference

Conference40th International Congress and Exposition on Noise Control Engineering 2011, INTER-NOISE 2011
Country/TerritoryJapan
CityOsaka
Period4/09/117/09/11

Keywords

  • CPX measurement
  • Tyre/road noise
  • Vibration

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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