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