Cosine-modulated perfect reconstruction IIR filter bank with good time-frequency resolution

Author

Znidar, S.

Author_Institution

Fac. of Electr. Eng., Ljubljana Univ.

Volume

2

fYear

1997

fDate

2-4 Jul 1997

Firstpage

1067

Abstract

The paper presents a class of infinite impulse response (IIR) cosine-modulated perfect reconstruction (PR) filter banks whose time-frequency resolution approaches the theoretical upper limit. The main advantages of the proposed design are very good time-frequency resolution (TFR), the absence of sidelobes in the filter characteristic, perfect reconstruction with a proposed synthesis bank (no phase, amplitude or aliasing distortions) and an efficient implementation using fast DCT algorithms

Keywords

IIR filters; band-pass filters; digital filters; discrete cosine transforms; signal synthesis; time-frequency analysis; Gamma filters; cosine-modulated perfect reconstruction IIR filter bank; design; fast DCT algorithms; filter characteristic; infinite impulse response filter; signal analysis; signal synthesis; synthesis bank; theoretical upper limit; time-frequency resolution; Filter bank; IIR filters; Low pass filters; Prototypes; Signal analysis; Signal processing algorithms; Signal resolution; Signal synthesis; Speech synthesis; Time frequency analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on

Conference_Location

Santorini

Print_ISBN

0-7803-4137-6

Type

conf

DOI

10.1109/ICDSP.1997.628549

Filename

628549