Design of real and complex linear-phase IIR modified QMF banks

Alfonso Fernandez-Vazquez, Gordana Jovanovic-Dolecek

Resultado de la investigación: Contribución a una conferenciaArtículo

Resumen

A design of linear-phase IIR (Infinite Impulse Response) modified QMF banks including both real and complex valued coefficients is proposed. This design is based on parallel structure of two complex allpass filters. We first introduce a complex analog allpass filter, designed using elliptic functions and the PR (Perfect Reconstruction) conditions. We use bilinear transformation to obtain the digital counterpart of this analog allpass filter. Depending on the parity of the order N of the complex allpass filter, the resulting IIR filters in the filter bank can be either real or complex. If N is even, the IIR filters are real, otherwise they are complex. Using complex IIR analysis filters, the corresponding magnitude responses have an extra zero around ω = 3π/2. The method is illustrated by means of examples. ©2006 IEEE.
Idioma originalInglés estadounidense
Páginas1063-1066
Número de páginas956
DOI
EstadoPublicada - 1 dic 2006
Publicado de forma externa
EventoIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS -
Duración: 1 dic 2006 → …

Conferencia

ConferenciaIEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS
Período1/12/06 → …

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    Fernandez-Vazquez, A., & Jovanovic-Dolecek, G. (2006). Design of real and complex linear-phase IIR modified QMF banks. 1063-1066. Papel presentado en IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, . https://doi.org/10.1109/APCCAS.2006.342272