An optimized filter band analyzer for quantification of localized muscle fatigue
Kahabka, G.; Rohmert, W.
European Journal of Applied Physiology and Occupational Physiology 49(3): 329-342
1982
ISSN/ISBN: 0301-5548 PMID: 6890448 Document Number: 183914
A filter bank analyzer is described which determines the central frequency of the electromyographic . Six parallel bands pass filters transmit the expected average spectral fuction, with minimized differences in the frequency range from 18-140 Hz. The systematic error of the center frequency amounts to < 0.5%, when using precision filters with high roll-off. An example compares the shift of center frequency method with the fatigue index of myoelectrical activity.