Title :
Frequency Transformations in Two-Band Wavelet IIR Filter Banks
Author :
Damjanovic, Sanja ; Milic, Ljiljana ; Saramaki, Tapio
Author_Institution :
Mihajlo Pupin Inst., Belgrade
Abstract :
We consider an extension of the ordinary dyadic wavelet transform implemented by iteration of the two-band orthogonal rational filter banks on the lowpass branch that provides a flexible orthogonal tiling of the time-frequency plane. We design the rational two-band orthogonal IIR filter banks starting from the fifth order halfband filter bank with desired regularity order and generate pertaining wavelet and scaling functions. The implementation is based on the lattice wave digital filter structures. We show the appropriate time-frequency plane tiling
Keywords :
IIR filters; channel bank filters; lattice filters; low-pass filters; wavelet transforms; dyadic wavelet transform; flexible orthogonal tiling; frequency transformation; halfband filter bank; lattice wave digital filter structures; lowpass branch; orthogonal rational filter banks; time frequency plane tiling; wavelet IIR filter banks; Digital filters; Electronic mail; Filter bank; Finite impulse response filter; IIR filters; Lattices; Sampling methods; Signal detection; Time frequency analysis; Wavelet transforms; Filter banks; frequency transformations; lattice wave digital filters; wavelet transform;
Conference_Titel :
Computer as a Tool, 2005. EUROCON 2005.The International Conference on
Conference_Location :
Belgrade
Print_ISBN :
1-4244-0049-X
DOI :
10.1109/EURCON.2005.1629865
