한국소음진동공학회논문집 (Transactions of the Korean Society for Noise and Vibration Engineering)

  • 제16권6호
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  • Pages.627-633
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  • 2006
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  • 1598-2785(pISSN)
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  • 2287-5476(eISSN)
한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
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The Reduction of Tire Pattern Noise Using Time-frequency Transform

  • 발행 : 2006.06.01
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초록

The tire is considered as one of the important noise sources having an influence on vehicle's performance. The Pattern noise of a tire is the transmission sound of airborne noise. On smooth asphalt road, Pattern noise is amplified with the velocity. In recent, the study on the reduction of Pattern noise is energetically processed. Pattern noise is strongly related with pitch sequence. To reduce the pattern noise, tire's designer has to randomize the sequence of pitch. The FFT is a traditional method to evaluate the level of the randomization of the pitch sequence, but gives no information on time-varying, instantaneous frequency. In the study, we found that Time-Frequency transform is a useful method to non-stationary signal such as tire noise.

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참고문헌

  1. Heckl, M., 1986, ' Tyre Noise Generation,' Wear, 113, pp. 157 - 170 https://doi.org/10.1016/0043-1648(86)90065-7
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  4. EI-Sebai, N. A., Watany, M. and Saad, ' Tire/Road Interface Airborne Noise Characteristics Generation,' SAE1999-0.1-1731
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