The Fetal Heart Rate Signal Processing Based on the Adaptive Noise Canceling
نویسندگان
چکیده
Fetal Heart Rate signal is an objective index which reflects the physiological activity of foetus heart electricity, The abstraction and processing of the signal of foetus' rhythm of the heart enclose the key technology which the foetus guards in childbirth period. For dealing with this kind of nonsteady random signal of foetus' rhythm of the heart. Through adjusting weight value the adaptive filter can make square error become more and more minimum, realize the adaptive filter result bestly. This paper is on the basis of various kinds of the adaptive algorithms, the clippederror LMS algorithm with variable step size of segmenting type is proposed ,using the adaptive noise canceling system , and it realized foetus rhythm of the heart signal abstraction. through MATLAB computer emulation analyse , make SNR raise 30dB , the operation time is very much little , it took about 2s only , it is obvious that the algorithm has the speed of convergence quickly.
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