Acoustic Signals Analysis Based on Empirical Mode Decomposition and Spectrum Analysis Technique
2010 ◽
Vol 40-41
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pp. 91-95
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Keyword(s):
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.
2014 ◽
Vol 31
(9)
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pp. 1982-1994
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2012 ◽
Vol 518-523
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pp. 3887-3890
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2011 ◽
Vol 03
(04)
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pp. 483-491
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2013 ◽
Vol 340
◽
pp. 441-444
2014 ◽
Vol 228
(15)
◽
pp. 2810-2819
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2011 ◽
Vol 255-260
◽
pp. 1671-1675
2010 ◽
Vol 139-141
◽
pp. 2464-2468
2016 ◽
Vol 231
(22)
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pp. 4139-4149
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2022 ◽