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Journal Article

Study of a Fast Method to Calculate Inverse Filters

Authors: Irisawa, Hideki; Shimada, Shoji; Hokari, Haruhide; Hosoya, Shinichi

Journal of the Audio Engineering Society · Volume 46 · Issue 7/8 · pp. 611–620 · July 1998

Abstract

In certain systems it is very important to calculate quickly an inverse filter that has a large number of taps. Several approaches to solving normal equations are investigated. One fast method uses conjugate gradients in the frequency domain. To enhance this method a fast method that calculates only linear convolutions in conjugate gradients by FFT is proposed. Simulation results show that the sum of the squares of the residual errors of our method is as low as that of the Levinson algorithm, which is slower than the method proposed.

Details

Publication
Journal of the Audio Engineering Society
Volume
46
Issue
7/8
Pages
611–620
Publication date
July 6, 1998
Affiliation
Nagaoka University of Technology, Nagaoka city, Niigata, Japan ; Japan Kyastem Co. Ltd., Tachikawa city, Tokyo, Japan (See document for exact affiliation information.)
Type
Journal Article