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Volume 20 Issue 6
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LIU Ke. Experimental investigation on finite-amplitude standing waves: Ⅲ. resonance of third harmonic[J]. ACTA ACUSTICA, 1995, 20(6): 466-468. DOI: 10.15949/j.cnki.0371-0025.1995.06.010
Citation: LIU Ke. Experimental investigation on finite-amplitude standing waves: Ⅲ. resonance of third harmonic[J]. ACTA ACUSTICA, 1995, 20(6): 466-468. DOI: 10.15949/j.cnki.0371-0025.1995.06.010
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Experimental investigation on finite-amplitude standing waves: Ⅲ. resonance of third harmonic

  • Insititute of Acousttics, Academia Sinica, Beijing 100080

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  • Received Date: September 21, 1993
  • Available Online: August 05, 2022
    Graphical Abstract
    • Abstract
  • The curve of third harmonic sound pressure level (Lp3) can be described by a "periodic function" at a constant fundamental sound pressure level (Lp1)148 dB.The period length is about "first resonance frequency" of the tube Δf=c0/2L. The resonance frequencies of third harmonic themselves are about same as the those of the tube, but the "trough values" of the curve are different from the anti-resonance frequencies of the tube. There are some phenomena in other frequency region to be explained.
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