Calculation of the sound-absorbing panels based on the principle of electroacoustic analogies and considering the rayleigh impedance

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Authors

  • M. LEŚNIAK Physics Department, I. Łukaszewicz Technical University, Poland
  • A. DRZYMAŁA Physics Department, I. Łukaszewicz Technical University, Poland
  • S. KLIMCZYK Physics Department, I. Łukaszewicz Technical University, Poland
  • R. WYRZYKOWSKI Acoustics Department, Pedagogical College, Poland

Abstract

This paper reports on calculations of the parameters of a bothsided perforated sound-absorbing system, based on the "electric model" and considering the Rayleigh impedance. Both the absorption coefficient for perpendicular incidence and the reverberation coefficient over a broad frequency range were calculated.

References

[1] A. DRZYMAŁA, M. LEŚNIAK, S. KLIMCZYK, R. WYRZYKOWSKI, Parameters of sound-absorbing systems for predetermined frequencies (in Polish), Proceedings of the XXXth OSA, Committee on Acoustics of the Polish Academy of Sciences, Gdańsk.

[2] E. JANKE, F. EMDE, F. LOSCH, Spetstyalnye funktsi, Izd. Nauka, Moscow, 1968.

[3] I. MALECKI, Theory of acoustics waves and systems (in Polish), PWN, Warsaw, 1964.

[4] E. SKUDRZYK, The foundations of acoustics, Wien-New York, 1971.