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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
environmental science
Choi-Williams time-frequency analysis of forearm flexors Mechanomyogram acquired from a laser diode sensor based probe
WIT Transactions on Ecology and the Environment, Volume 160, Year 2012
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Description
The aim of this paper is to show how time-frequency plane can be used to directly read the frequency contents of forearm flexors muscles vibrations actually called MMG signals (Mechanomyogram). The MMG signals under scope are acquired from a laser diode sensor based probe connected to precise interface acquisition cards and the acquired signals are put into the memory of a PC for further analysis. The time-frequency technique used is the Choi-Williams energy distribution which belongs to the well reputed Cohen's class and satisfies many very useful properties especially in its 3D version. With this technique a good compromise between time and frequency resolution can be found. The 3D spectrograms displayed from the data acquired from few normal subjects and patients with specific muscle disorders are compared. This analysis method revealed an efficient localization of the MMG most significant frequencies. © 2012 WIT Press.
Authors & Co-Authors
Mekaoui, Slimane
France, Algerie
Département Des Télécommunications
France, Besancon
Ufr
Ghoumid, Kamal
France, Besancon
Ufr
Morocco, Oujda
École Nationale Des Sciences Appliquées D'oujda
Gharbi, Tijani
France, Besancon
Ufr
Statistics
Citations: 3
Authors: 3
Affiliations: 3
Identifiers
Doi:
10.2495/DN120191
ISSN:
17433541