Title :
Inverting periodic filters
Author :
Lin, Ching-An ; King, Chwan-Wen
Author_Institution :
Dept. of Control Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
1/1/1994 12:00:00 AM
Abstract :
The authors consider linear periodic filters. They give simple necessary and sufficient conditions for the filter to be invertible and a simple formula to compute its inverse. If the filter is not invertible, they propose a method to compute its optimal approximate inverse. An illustrative example is given
Keywords :
approximation theory; digital filters; filtering and prediction theory; matrix algebra; inverse filter; linear periodic filters; necessary conditions; optimal approximate inverse; periodic filters inversion; speech scrambling; sufficient conditions; Estimation theory; Harmonic analysis; Iterative algorithms; Nonlinear filters; Signal processing algorithms; Signal reconstruction; Signal representations; Signal resolution; Signal restoration; Sufficient conditions;
Journal_Title :
Signal Processing, IEEE Transactions on
