IEICE TRANSACTIONS on Fundamentals
A New Factorization Technique for the Generalized Linear-Phase LOT and Its Fast Implementation
Summary :
In this work, a new structure of M-channel linear-phase paraunitary filter banks is proposed, where M is even. Our proposed structure can be regarded as a modification of the conventional generalized linear-phase lapped orthogonal transforms (GenLOT) based on the discrete cosine transform (DCT). The main purpose of this work is to overcome the limitation of the conventional DCT-based GenLOT, and improve the performance of the fast implementation. It is shown that our proposed fast GenLOT is superior to that of the conventional technique in terms of the coding gain. This work also provides a recursive initialization design procedure so as to avoid insignificant local-minimum solutions in the non-linear optimization processes. In order to verify the significance of our proposed method, several design examples are given. Furthermore, it is shown that the fast implementation can be used to construct M-band linear-phase orthonormal wavelets with regularity.
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- IEICE TRANSACTIONS on Fundamentals Vol.E79-A No.8 pp.1173-1179
- Publication Date
- 1996/08/25
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- Special Section PAPER (Special Section on Digital Signal Processing)
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Shogo MURAMATSU, Hitoshi KIYA, "A New Factorization Technique for the Generalized Linear-Phase LOT and Its Fast Implementation" in IEICE TRANSACTIONS on Fundamentals,
vol. E79-A, no. 8, pp. 1173-1179, August 1996, doi: .
Abstract: In this work, a new structure of M-channel linear-phase paraunitary filter banks is proposed, where M is even. Our proposed structure can be regarded as a modification of the conventional generalized linear-phase lapped orthogonal transforms (GenLOT) based on the discrete cosine transform (DCT). The main purpose of this work is to overcome the limitation of the conventional DCT-based GenLOT, and improve the performance of the fast implementation. It is shown that our proposed fast GenLOT is superior to that of the conventional technique in terms of the coding gain. This work also provides a recursive initialization design procedure so as to avoid insignificant local-minimum solutions in the non-linear optimization processes. In order to verify the significance of our proposed method, several design examples are given. Furthermore, it is shown that the fast implementation can be used to construct M-band linear-phase orthonormal wavelets with regularity.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/e79-a_8_1173/_p
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@ARTICLE{e79-a_8_1173,
author={Shogo MURAMATSU, Hitoshi KIYA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={A New Factorization Technique for the Generalized Linear-Phase LOT and Its Fast Implementation},
year={1996},
volume={E79-A},
number={8},
pages={1173-1179},
abstract={In this work, a new structure of M-channel linear-phase paraunitary filter banks is proposed, where M is even. Our proposed structure can be regarded as a modification of the conventional generalized linear-phase lapped orthogonal transforms (GenLOT) based on the discrete cosine transform (DCT). The main purpose of this work is to overcome the limitation of the conventional DCT-based GenLOT, and improve the performance of the fast implementation. It is shown that our proposed fast GenLOT is superior to that of the conventional technique in terms of the coding gain. This work also provides a recursive initialization design procedure so as to avoid insignificant local-minimum solutions in the non-linear optimization processes. In order to verify the significance of our proposed method, several design examples are given. Furthermore, it is shown that the fast implementation can be used to construct M-band linear-phase orthonormal wavelets with regularity.},
keywords={},
doi={},
ISSN={},
month={August},}
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TY - JOUR
TI - A New Factorization Technique for the Generalized Linear-Phase LOT and Its Fast Implementation
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1173
EP - 1179
AU - Shogo MURAMATSU
AU - Hitoshi KIYA
PY - 1996
DO -
JO - IEICE TRANSACTIONS on Fundamentals
SN -
VL - E79-A
IS - 8
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - August 1996
AB - In this work, a new structure of M-channel linear-phase paraunitary filter banks is proposed, where M is even. Our proposed structure can be regarded as a modification of the conventional generalized linear-phase lapped orthogonal transforms (GenLOT) based on the discrete cosine transform (DCT). The main purpose of this work is to overcome the limitation of the conventional DCT-based GenLOT, and improve the performance of the fast implementation. It is shown that our proposed fast GenLOT is superior to that of the conventional technique in terms of the coding gain. This work also provides a recursive initialization design procedure so as to avoid insignificant local-minimum solutions in the non-linear optimization processes. In order to verify the significance of our proposed method, several design examples are given. Furthermore, it is shown that the fast implementation can be used to construct M-band linear-phase orthonormal wavelets with regularity.
ER -
English
