No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
The full text of this article is not currently available.
Sound pressure around dipole source above porous surface
2. Y. Takahashi, T. Otsuru, and R. Tomiku, “ In situ measurements of surface impedance and absorption coefficients of porous materials using two microphones and ambient noise,” Appl. Acoust. 66, 845–865 (2005).
3. R. Lanoye, G. Vermeir, and W. Lauriks, “ Measuring the free field acoustic impedance and absorption coefficient of sound absorbing materials with a combined particle velocity-pressure sensor,” J. Acoust. Soc. Am. 119, 2826–2831 (2006).
4. M. Muller, P. Dietrich, M. Aretz, J. Gemmeren, and M. Vorlander, “ On the in situ impedance measurement with pu-probes—Simulation of the measurement setup,” J. Acoust. Soc. Am. 134, 1062–1089 (2013).
5. B. Castagnède, A. Moussatov, D. Lafarge, and M. Saeid, “ Low frequency in situ metrology of absorption and dispersion of sound absorbing porous materials based on high power ultrasonic non-linearly demodulated waves,” Appl. Acoust. 69, 634–648 (2008).
12. K. M. Li, S. Taherzadeh, and K. Attenborough, “ Sound propagation from a dipole source near an impedance plane,” J. Acoust. Soc. Am. 101, 3343–3352 (1997).
13. K. M. Li and S. Taherzadeh, “ The sound field of an arbitrarily oriented quadrupole near ground surfaces,” J. Acoust. Soc. Am. 102, 2050–2057 (1997).
14. K. M. Li and H. Tao, “ Reflection and transmission of sound from a dipole source near a rigid porous medium,” Acta Acust. Acust. 99, 703–715 (2013).
15. H. M. Hess, K. Attenborough, and N. W. Heap, “ Ground characterization by short-range propagation measurements,” J. Acoust. Soc. Am. 87, 1975–1986 (1990).
16. J. F. Allard, Y. Champoux, and J. Nicolas, “ Pressure variation above a layer of absorbing material and impedance measurement at oblique incidence and low frequencies,” J. Acoust. Soc. Am. 86, 766–770 (1989).
19. U. Skov and R. Christensen, “ An investigation of loudspeaker simulation efficiency and accuracy using a conventional model, a near-to-far-field transformation and the Rayleigh integral,” in 136th Convention, Berlin, Germany, 26–29 April 2014, Audio Engineering Society, New York.
Article metrics loading...
A technique for in situ measurements of acoustic properties of a fibrous porous material is proposed in this paper. Proposed technique exploits a directivity pattern of a dipole source in its very near field. Theoretical analysis for the proposed technique is based on the Rayleigh integral with a complex reflection included. Results are compared with results of FEM analysis and show that flow resistivity of a porous material placed in the very near field of the dipole source has significant influence on the sound pressure at its ring. Results provide an excellent starting point for the design of the sensor for sound absorption.
Full text loading...
Most read this month