Design of paraunitary oversampled cosine-modulated filter banks

Joerg Kliewer, Alfred Mertins

Abstract

In this paper we derive perfect reconstruction (PR) conditions for oversampled cosine-modulated filter banks. The results can be regarded as a generalization of the known work for critical subsampling. We show that in the oversampled case we gain some additional degree of freedom, which can be exploited in the filter design process. This leads to PR prototypes with stopband attenuations being much higher than in the critically subsampled PR case. The filters designed as PR filters for the oversampled case can also serve as prototypes for critically subsampled cosine-modulated pseudo QMF banks.

OriginalspracheEnglisch
Titel1997 IEEE International Conference on Acoustics, Speech, and Signal Processing
Seitenumfang4
Herausgeber (Verlag)IEEE
Erscheinungsdatum01.01.1997
Seiten2073-2076
ISBN (Print)0-8186-7919-0
DOIs
PublikationsstatusVeröffentlicht - 01.01.1997
VeranstaltungProceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing
- Munich, Deutschland
Dauer: 21.04.199724.04.1997
Konferenznummer: 46531

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