Acoustic Signals Analysis Based on Empirical Mode Decomposition and Spectrum Analysis Technique

Yan Li Zhang

doi:10.4028/www.scientific.net/AMM.40-41.91

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 40-41Acoustic Signals Analysis Based on Empirical Mode...

Acoustic Signals Analysis Based on Empirical Mode Decomposition and Spectrum Analysis Technique

Abstract:

A method to analyze the acoustic signals collected in fully-mechanized caving face is presented in this paper. Through analyzing the marginal spectrum and frequency spectrum of intrinsic mode functions obtained by empirical mode decomposition, acoustic signals’ frequency and amplitude characteristics are gotten, that is, high frequency signals about 1000Hz ~2800Hz are produced when the top coal is combined with gangue. Furthermore, the acoustic signals’ instantaneous energy spectrums in the frequency range of 1000Hz ~2800Hz can be used to identify the coal-rock interface.

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Periodical:

Applied Mechanics and Materials (Volumes 40-41)

Pages:

91-95

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.40-41.91

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Online since:

November 2010

Authors:

Yan Li Zhang

Keywords:

Acoustic Signal, Empirical Mode Decomposition (EMD), Frequency Spectrum, Fully Mechanized Caving Face, Instantaneous Energy Spectrum, Marginal Spectrum

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