Title :
Cosine-modulated perfect reconstruction IIR filter bank with good time-frequency resolution
Author_Institution :
Fac. of Electr. Eng., Ljubljana Univ.
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;
Conference_Titel :
Digital Signal Processing Proceedings, 1997. DSP 97., 1997 13th International Conference on
Conference_Location :
Santorini
Print_ISBN :
0-7803-4137-6
DOI :
10.1109/ICDSP.1997.628549
