Regularisation problems at the determination of the acoustic power of sound sources

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Authors

  • J. Piechowicz AGH University of Science and Technology, Department of Mechanics and Vibroacoustics, Al. Mickiewicza 30, 30-059 Kraków, Poland

Abstract

This paper presents exploratory problems of regularisation of the inverse method for the investigation of the characteristics of acoustic sources at industrial conditions. The solution of problem is to find an effective method for the determination of optimal regularisation parameters in acoustic inverse problems. The sound power of the sound source distribution can be simply deduced from the measured pressure field and the inversion of the corresponding matrix of frequency response functions. The accuracy of reconstruction of the sound power of the source is crucially dependent on the conditioning of the matrix to be inverted. The success of regularisation depends on the appropriate choice of the regularisation parameter.

Keywords:

inverse method, regularisation, sound source.

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