TY - GEN
T1 - The design of M-channel linear phase wavelet-like filter banks
AU - Xie, X. M.
AU - Peng, B.
AU - Ma, X. J.
AU - Shi, G. M.
AU - Fernandez-Vazquez, A.
PY - 2008
Y1 - 2008
N2 - This paper investigates M-channel linear-phase (LP) wavelet-like filter banks. The term "wavelet-like" is justified because the filter bank is of near-perfect-reconstruction (NPR). We firstly derive some conditions for designing M-channel LP NPR filter banks and then propose a design method of wavelet-like filter banks. The proposed wavelet-like filter bank is obtained by imposing regularity constraints on the LP NPR filter bank. By using some simple algebraic transformations, we convert the original filter into the wavelet-like filter without nonlinear optimization. With this method, we not only preserve the desired LP property, but also obtain good NPR property as the original NPR filter bank, such as high stopband attenuation. Finally, examples show that LP wavelet-like filter banks with even and odd numbers of channels are capable of achieving different degrees of regularity.
AB - This paper investigates M-channel linear-phase (LP) wavelet-like filter banks. The term "wavelet-like" is justified because the filter bank is of near-perfect-reconstruction (NPR). We firstly derive some conditions for designing M-channel LP NPR filter banks and then propose a design method of wavelet-like filter banks. The proposed wavelet-like filter bank is obtained by imposing regularity constraints on the LP NPR filter bank. By using some simple algebraic transformations, we convert the original filter into the wavelet-like filter without nonlinear optimization. With this method, we not only preserve the desired LP property, but also obtain good NPR property as the original NPR filter bank, such as high stopband attenuation. Finally, examples show that LP wavelet-like filter banks with even and odd numbers of channels are capable of achieving different degrees of regularity.
UR - http://www.scopus.com/inward/record.url?scp=51849142410&partnerID=8YFLogxK
U2 - 10.1109/ICALIP.2008.4590111
DO - 10.1109/ICALIP.2008.4590111
M3 - Contribución a la conferencia
AN - SCOPUS:51849142410
SN - 9781424417230
T3 - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
SP - 436
EP - 442
BT - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing, Proceedings
T2 - ICALIP 2008 - 2008 International Conference on Audio, Language and Image Processing
Y2 - 7 July 2008 through 9 July 2008
ER -