Influence of reverberation field conditions on sound power evaluation with the aid of intensity method

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Authors

  • J. CIEŚLIK Institute of Mechanics and Vibroacoustics, Academy of Mining and Metallurgy, Poland
  • R. PANUSZKA Institute of Mechanics and Vibroacoustics, Academy of Mining and Metallurgy, Poland

Abstract

The results of investigations presented in the article were aimed at explaining how the conditions of acoustic field described by the room absorption and reverberation time can influence the calculated sound power value determined by the sound intensity measurements. As the sound source the rigid piston in the large baffle was used. The measurements of sound intensity and sound pressure were done in the free field and diffuse field conditions. The total absorption of the room was changed.

References

[1] J. CIEŚLIK, Analysis of the sound intensity methods usability in vibroacoustics investigations, Ph. D. Thesis Academy of Mining and Metallurgy, Krakow 1990.

[2] J. CIEŚLIK, R. PANUSZKA, Investigations of the application of the sound power evaluation method in partially diffuse field (in Polish). Mechanika 6, 4, 17-26 (1987).

[3] J. CIEŚLIK, R. PANUSZKA, Local transmission loss. Noise Control 88 Proc., 243-246.

[4] S. CZARNECKL, Z. ENGEL, R. PANUSZKA, Gradient method of sound power measurements in situ, 10th Congress on Acoustics, Sydney 1980.