Method estimating reflection coefficients of adaptive lattice filter and its application to system identification
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概要
- 論文の詳細を見る
In this paper, we propose a method of estimating the reflection coefficients of an adaptive lattice filter. In this method, conventional adaptive algorithms, for example, the normalized least mean square (NLMS) algorithm, are used for the estimation. In general, the reflection coefficients are estimated as cross-correlation coefficients between forward and backward prediction errors in each stage of the adaptive lattice filter. Accordingly, two divisions in each stage, and effectively doubling the number of stages, are required. A problem is that the processing cost of division is higher than that of multiplication, especially in cheap digital signal processors (DSPs). Hence, the reduction of the number of divisions is strongly desired in practical use. The proposed technique can decrease the number of divisions to one, provided that the NLMS algorithm is used. Moreover, in the application of the adaptive lattice filter, system identification is also important. In this paper, we present a technique for the application. The technique is derived from the proposed method.
- 社団法人日本音響学会の論文
著者
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FUJII Kensaku
Graduate School of Engineering, University of Hyogo
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Fujii Kensaku
Department of Computer Engineering, University of Hyogo
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Fujii K
Faculty Of Engineering University Of Hyogo
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ITOH Yoshio
Faculty of Engineering, Tottori University
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Itoh Y
Faculty Of Engineering Tottori University
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Itoh Yoshio
Faculty Of Engineering Tottori University
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Itoh Yoshio
Fac. Of Engineering Tottori Univ.
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Fujii Kensaku
Department Of Computer Engineering University Of Hyogo
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TANAKA Masaaki
Department of Physiology, Osaka City University Graduate School of Medicine
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Itoh Yoshio
Department Of Electrical And Electronics Engineering Faculty Of Engineering Tottori University
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SASAOKA Naoto
Department of Electrical and Electronics Engineering, Faculty of Engineering, Tottori University
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Sasaoka Naoto
Faculty of Engineering, Tottori University
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Itoh Y
Tottori Univ. Tottori‐shi Jpn
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Fujii K
The Graduate School Of Engineering University Of Hyogo
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Sasaoka Naoto
Department Of Electrical And Electronics Engineering Faculty Of Engineering Tottori University
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Tanaka Masaaki
Department Of Computer Engineering University Of Hyogo:(presently With)mitsubishi Electric Co.
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