Title :
A technique for transient suppression of IIR notch filter
Author :
Pei, Soo-Chang ; Tseng, Chien-Cheng
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
A technique for suppressing the transient states of IIR notch filters is presented. This technique mainly uses the vector projection to find the best initialization of a notch filter. When a notch filter is used to cancel 60 Hz interference in the recording of electrocardiograms (ECG), the performance of the notch filter with transient suppression is better than that of the notch filter with arbitrary initialization. The improvements realized by this technique is at the cost of little additional computational load at the beginning of filtering
Keywords :
IIR filters; electrocardiography; filtering theory; interference suppression; medical signal processing; notch filters; 60 Hz; ECG; IIR notch filter; electrocardiograms; filtering; initialization; interference cancellation; performance; transient suppression; vector projection; Band pass filters; Bandwidth; Costs; Electrocardiography; Filtering; Frequency; IIR filters; Interference cancellation; Interference suppression; Transient response;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1994. ICASSP-94., 1994 IEEE International Conference on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-1775-0
DOI :
10.1109/ICASSP.1994.390053
