Journal of Medical Systems

, Volume 34, Issue 1, pp 91–94 | Cite as

Comparison of Wavelet and Short Time Fourier Transform Methods in the Analysis of EMG Signals

Original Paper

Abstract

The electromyographic (EMG) signal observed at the surface of the skin is the sum of thousands of small potentials generated in the muscle fiber. There are many approaches to analyzing EMG signals with spectral techniques. In this study, the short time Fourier Transform (STFT) and wavelet transform (WT) were applied to EMG signals and coefficients were obtained. In these studies, MATLAB 7.01 program was used. According to obtained results, it was determined that WT is more useful than STFT in the fields of eliminating of resolution problem and providing of changeable resolution during analyze.

Keywords

Wavelet STFT EMG 

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Department of Electronics and Computer Education, Faculty of Technical EducationGazi UniversityAnkaraTurkey

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