Analysis of the Structure of Acoustic Emission Signals of the Audible Range by the Sparse Approximation Method

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Analysis of the Structure of Acoustic Emission Signals of the Audible Range by the Sparse Approximation Method

Marapulets Yu. V., Tristanov A.B., Shevtsov B.M.

Institute of Cosmophysical Research and Radio Wave Propagation FEB RAS

A new approach for the time–frequency analysis of acoustic emission of the audible frequency range is proposed. The approach is based on the sparse approximation method. A basis dictionary based on Berlage functions is constructed with allowance for the characteristics of geoacoustic signals. It is shown that application of the developed method in analyzing real data makes it possible to reveal the internal geoacoustic pulse structure caused by the features of their sources. The results can be used for diagnosing deformation processes in natural media.

Marapulets Yu. V., Tristanov A.B., Shevtsov B.M. Analysis of the Structure of Acoustic Emission Signals of the Audible Range by the Sparse Approximation Method // Acoustical Physics. 2014. Vol. 60. No. 4. P.427. DOI: 10.1134/S1063771014040083