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 | |
| 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 |
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ASJC Scopus subject areas
- Signal Processing
- Computer Networks and Communications
Cite this
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
}
TY - GEN
T1 - Two channel IIR QMF banks with approximately linear-phase analysis and synthesis filters
AU - Ekanayake, M. M.
AU - Premaratne, Kamal
PY - 1994/1/1
Y1 - 1994/1/1
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.
UR - http://www.scopus.com/inward/record.url?scp=84941871757&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84941871757&partnerID=8YFLogxK
U2 - 10.1109/ACSSC.1994.471611
DO - 10.1109/ACSSC.1994.471611
M3 - Conference contribution
AN - SCOPUS:84941871757
T3 - Conference Record - Asilomar Conference on Signals, Systems and Computers
SP - 1005
EP - 1009
BT - Conference Record - 28th Asilomar Conference on Signals, Systems and Computers, ACSSC 1994
PB - IEEE Computer Society
ER -