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作者:

Lu, Yadong (Lu, Yadong.) | Tang, Huide (Tang, Huide.) | Tian, Jing (Tian, Jing.) | Li, Hongqi (Li, Hongqi.) | Yang, Jun (Yang, Jun.)

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EI Scopus

摘要:

This paper deals with a new type resonant absorber, i.e. the perforated panel resonator with flexible tube bundles. The acoustical properties of the new sound absorbing structure are measured and analyzed. From the measurement results and theoretical analysis, the following conclusions can be made. The incorporation of the tube bundles into the resonator absorber is helpful to improve its low frequency sound absorption. Because the artificial prolongation of air column length inside an hole neck will increase acoustic mass, so that the resonance frequency can be shifted to a lower frequency correspondingly. Compared with traditional perforated panel absorber, the acoustic resistance of the sound absorbing structure can be increased considerably due to the incorporation of the flexible tube bundles into the resonator absorber, so that higher sound absorption coefficients can be expected to reach. By reasonably utilizing the tube and cavity coupling resonances, the frequency bandwidth of sound absorption of the perforated panel resonator with flexible tube bundles may be broadened. The perforated panel resonator with flexible tube bundles may be used in some cases with strict space limitations and with the expectation of increasing the sound absorption at lower frequencies.

关键词:

Acoustic noise Acoustics Acoustic variables control Acoustic wave absorption Resonators Sound insulating materials Tubes (components)

作者机构:

  • [ 1 ] [Lu, Yadong]Institute of Acoustics, Chinese Academy of Sciences, 17 Zhongguancun St., Beijing 100080, China
  • [ 2 ] [Tang, Huide]Tianjin Hearing-aid Factory, Chenglinzhuang Rd. No. 93, Tianjin 300161, China
  • [ 3 ] [Tian, Jing]Institute of Acoustics, Chinese Academy of Sciences, 17 Zhongguancun St., Beijing 100080, China
  • [ 4 ] [Li, Hongqi]Beijing University of Technology, 100 Pingleyuan St., Chaoyang District, Beijing 100022, China
  • [ 5 ] [Yang, Jun]Institute of Acoustics, Chinese Academy of Sciences, 17 Zhongguancun St., Beijing 100080, China

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年份: 2007

卷: 3

页码: 1636-1642

语种: 英文

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