Title :
An IIR adaptive line enhancer with controlled bandwidth
Author :
Farhang-Boroujeny, B.
Author_Institution :
Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore
fDate :
2/1/1997 12:00:00 AM
Abstract :
A previously proposed IIR adaptive line enhancer (ALE) is explored further. We propose a mechanism for controlling the bandwidth of the ALE in an adaptive manner. The proposed mechanism increases the bandwidth of the ALE whenever its peak is not close to a spectral line of the input signal to assure its fast convergence and decreases the bandwidth of the ALE when its peak matches a spectral line of the input signal to enhance that spectral line further. In addition, a new algorithm for robust adaptation of the ALE is proposed
Keywords :
IIR filters; adaptive filters; adaptive signal processing; filtering theory; spectral analysis; IIR adaptive line enhancer; algorithm; controlled bandwidth; fast convergence; input signal; robust adaptation; spectral line; Adaptive control; Bandwidth; Equations; Finite impulse response filter; IIR filters; Line enhancers; Nonlinear filters; Programmable control; Signal to noise ratio; White noise;
Journal_Title :
Signal Processing, IEEE Transactions on
