Features of the walking gait waveform in the waveform accuracy favorably to extract the feature extraction methods and personal identification device is proposed. Invention , on the basis of the body of the walking motion of the electric field displacement formed on the human body , one side entire soles of the feet to the landing and the 8Hz peak corresponding to the state of the other foot toe is not immediately to the surface , the walking motion specifying a first correction waveform corresponding to one of the beams , and that , by being based on a first correction waveform to extract a specified feature of the first correction waveform , the peak amplitude appearing without being affected by the charge interference between the right and left foot can be used as an index to , the walking beam 1 precisely as faithfully reflect the actual waveform of the first beam movement can be identified , therefore , the features of the gait waveform precision can be satisfactorily extracted .
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