DocumentCode :
813026
Title :
Adaptive line enhancement by using an IIR lattice notch filter
Author :
Cho, Nam Ik ; Choi, Chong-Ho ; Lee, Sang U K
Author_Institution :
Dept. of Control & Instrum. Eng., Seoul Nat. Univ., South Korea
Volume :
37
Issue :
4
fYear :
1989
fDate :
4/1/1989 12:00:00 AM
Firstpage :
585
Lastpage :
589
Abstract :
Two simple methods for retrieving a single sinusoid corrupted with noise are proposed. They are based on the lattice form realization of an adaptive infinite-impulse-response (IIR) notch filter. The IIR filter is a cascade of second-order all-pole and all-zero filters, and the coefficients of the finite-impulse-response (FIR) section are adapted. The proposed algorithms keep the poles of the filter inside the unit circle. The computer simulation results show that the algorithms have considerable potential in adaptive notch filter applications, especially when the input signal-to-noise ratio is low.<>
Keywords :
adaptive filters; digital filters; filtering and prediction theory; noise; notch filters; IIR lattice notch filter; adaptive filters; adaptive line enhancement; all-pole filters; all-zero filters; finite-impulse-response; infinite-impulse-response; noise; Adaptive filters; Convergence; Filtering algorithms; IIR filters; Image restoration; Image segmentation; Iterative algorithms; Lattices; Smoothing methods; Sparse matrices;
fLanguage :
English
Journal_Title :
Acoustics, Speech and Signal Processing, IEEE Transactions on
Publisher :
ieee
ISSN :
0096-3518
Type :
jour
DOI :
10.1109/29.17543
Filename :
17543
Link To Document :
بازگشت