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- Elias, Elizabeth, et al.
(författare)
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Design of M-channel tree-structured filter banks with very low-complexity analysis filters
- 2000
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Ingår i: IEEE International Conference on Electronics Circuits and Systems,2000. - : IEEE. - 0780365429 ; , s. 87-90 vol.1
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Konferensbidrag (refereegranskat)abstract
- A class of M-channel tree-structured digital filter banks is considered with half-band IIR analysis filters and FIR synthesis filters. The filter banks approximate perfect reconstruction with an exact linear phase response and zero aliasing. This particular configuration has a very low-complexity analysis filter bank. In this paper we address the problem of minimizing the synthesis filter complexity, given the minimum-complexity analysis filters. The filter banks are designed using linear and nonlinear programming
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| 2. |
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| 3. |
- Elias, Elizabeth, et al.
(författare)
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Tree-structured IIR/FIR octave-band filter banks with very low-complexity analysis filters
- 2001
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Ingår i: IEEE International Symposium on Circuits and Systems,2001. ; , s. 533-536
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Konferensbidrag (refereegranskat)abstract
- A class of tree-structured octave-band digital filter banks is introduced. The filter banks make use of half-band IIR filters in the analysis bank and FIR filters in the synthesis bank which results in very low-complexity analysis filters. Further, the overall complexity is lower than, or comparable to, that of conventional filter banks. The overall filter banks approximate perfect reconstruction in the following sense. The distortion function is a linear-phase function approximating one in magnitude whereas the aliasing terms approximate zero. The filter banks are designed using linear and nonlinear programming. Design examples are included demonstrating the properties of the new filter banks
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| 4. |
- Elias, Elizabeth, et al.
(författare)
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Tree-structured IIR/FIR uniform-band and octave-band filter banks with very low-complexity analysis or synthesis filters
- 2003
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Ingår i: Signal Processing. - 0165-1684 .- 1872-7557. ; 83:9, s. 1997-2009
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Tidskriftsartikel (refereegranskat)abstract
- This paper introduces new tree-structured uniform-band and octave-band digital filter banks (FBs). These FBs make use of half-band IIR filters in the analysis FBs and FIR filters in the synthesis FBs. The resulting FBs are asymmetric in the sense that the analysis FB has a very low arithmetic complexity whereas that in the synthesis FB is higher. However, compared with other asymmetric FBs, the proposed ones have in many cases a lower overall arithmetic complexity and delay. The proposed FBs have magnitude distortion but no phase distortion, further, the aliasing components are either zero (uniform-band case) or approximately zero (octave-band case). The FBs are designed using linear and nonlinear programming. Design examples are included demonstrating the properties of the proposed filters banks. ⌐ 2003 Published by Elsevier B.V.
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| 5. |
- Elias, Elizabeth, et al.
(författare)
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Two-channel IIR/FIR filter banks with very low-complexity analysis or synthesis filters : finite wordlength effects
- 2001
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Ingår i: IEEE Midwest Symposium on Circuits and Systems,2001. ; , s. 126-129
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Konferensbidrag (refereegranskat)abstract
- A new class of two-channel IIR/FIR filter banks was introduced by the authors in 2000 with half-band IIR analysis filters and FIR synthesis filters. This type of filter bank features very low-complexity analysis filters and simultaneously a low overall complexity. In this paper, we consider finite-wordlength effects of these filter banks
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| 6. |
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