Title :
Design of signal-matched critically sampled FIR rational filterbank
Author :
Gogna, Anupriya ; Gade, Sri Harsha ; Gupta, Anubha
Author_Institution :
Dept. of Electron. & Commun. Eng., Indraprastha Inst. of Inf. Technol. Delhi, New Delhi, India
Abstract :
Wavelet transform is used for efficient signal analysis in various applications. The traditional wavelet system is implemented using integer decimation factors, although frequency tiling offered by rational decimation may better adapt to signal characteristics. In this paper, we propose a design methodology for signal-matched filterbank (FB) with rational decimation factors that achieves perfect reconstruction with FIR filters. We have applied the proposed design on some real world signals. With the proposed design, we obtain a more compressible transform domain representation than the dyadic standard wavelet transforms.
Keywords :
FIR filters; channel bank filters; signal reconstruction; wavelet transforms; FIR filters; frequency tiling; integer decimation factors; perfect reconstruction; rational decimation factors; signal analysis; signal-matched critically sampled FIR rational filterbank; transform domain representation; wavelet transform; Design methodology; Filter banks; Finite impulse response filters; Multiresolution analysis; Wavelet transforms; Critically Sampled Multi-Channel Filterbank; Matched Wavelet; Rational Wavelet Transform;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2015 IEEE International Conference on
Conference_Location :
South Brisbane, QLD
DOI :
10.1109/ICASSP.2015.7178693