Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters

M. M. Ekanayake; Kamal Premaratne

doi:10.1109/ACSSC.1994.471611

Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters

M. M. Ekanayake, Kamal Premaratne

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

In this paper, a computationally simple method to obtain IIR analysis and synthesis filters that possess negligible phase distortion is presented. It is shown that for a certain class of FIR filter banks, the polyphase components are approximately all-pass. By applying the balanced reduction procedure to the polyphase components of such a FIR prototype filter all-pass IIR polyphase components are obtained. The resulting IIR designs have negligible phase distortion. Design examples indicate that the derived IIR filter banks can be implemented more efficiently than the FIR prototypes. Results show that the IIR filters are better than linear phase perfect reconstruction systems when implemented in a finite wordlength processor.

Original language	English (US)
Title of host publication	Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994
Publisher	IEEE Computer Society
Pages	1005-1009
Number of pages	5
ISBN (Electronic)	0818664053
DOIs	https://doi.org/10.1109/ACSSC.1994.471611
State	Published - Jan 1 1994
Event	28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994 - Pacific Grove, United States Duration: Oct 31 1994 → Nov 2 1994

Publication series

Name	Conference Record - Asilomar Conference on Signals, Systems and Computers
Volume	2
ISSN (Print)	1058-6393

Conference

Conference	28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994
Country	United States
City	Pacific Grove
Period	10/31/94 → 11/2/94

ASJC Scopus subject areas

Signal Processing
Computer Networks and Communications

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10.1109/ACSSC.1994.471611

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Ekanayake, M. M., & Premaratne, K. (1994). Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. In Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994 (pp. 1005-1009). [471611] (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2). IEEE Computer Society. https://doi.org/10.1109/ACSSC.1994.471611

Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. / Ekanayake, M. M.; Premaratne, Kamal.

Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society, 1994. p. 1005-1009 471611 (Conference Record - Asilomar Conference on Signals, Systems and Computers; Vol. 2).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Ekanayake, MM & Premaratne, K 1994, Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. in Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994., 471611, Conference Record - Asilomar Conference on Signals, Systems and Computers, vol. 2, IEEE Computer Society, pp. 1005-1009, 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994, Pacific Grove, United States, 10/31/94. https://doi.org/10.1109/ACSSC.1994.471611

Ekanayake MM, Premaratne K. Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters. In Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994. IEEE Computer Society. 1994. p. 1005-1009. 471611. (Conference Record - Asilomar Conference on Signals, Systems and Computers). https://doi.org/10.1109/ACSSC.1994.471611

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abstract = "In this paper, a computationally simple method to obtain IIR analysis and synthesis filters that possess negligible phase distortion is presented. It is shown that for a certain class of FIR filter banks, the polyphase components are approximately all-pass. By applying the balanced reduction procedure to the polyphase components of such a FIR prototype filter all-pass IIR polyphase components are obtained. The resulting IIR designs have negligible phase distortion. Design examples indicate that the derived IIR filter banks can be implemented more efficiently than the FIR prototypes. Results show that the IIR filters are better than linear phase perfect reconstruction systems when implemented in a finite wordlength processor.",

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N2 - In this paper, a computationally simple method to obtain IIR analysis and synthesis filters that possess negligible phase distortion is presented. It is shown that for a certain class of FIR filter banks, the polyphase components are approximately all-pass. By applying the balanced reduction procedure to the polyphase components of such a FIR prototype filter all-pass IIR polyphase components are obtained. The resulting IIR designs have negligible phase distortion. Design examples indicate that the derived IIR filter banks can be implemented more efficiently than the FIR prototypes. Results show that the IIR filters are better than linear phase perfect reconstruction systems when implemented in a finite wordlength processor.

AB - In this paper, a computationally simple method to obtain IIR analysis and synthesis filters that possess negligible phase distortion is presented. It is shown that for a certain class of FIR filter banks, the polyphase components are approximately all-pass. By applying the balanced reduction procedure to the polyphase components of such a FIR prototype filter all-pass IIR polyphase components are obtained. The resulting IIR designs have negligible phase distortion. Design examples indicate that the derived IIR filter banks can be implemented more efficiently than the FIR prototypes. Results show that the IIR filters are better than linear phase perfect reconstruction systems when implemented in a finite wordlength processor.

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Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters

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