Title :
1/M-octave-band filter banks and wavelets
Author :
Schönle, Martin ; Fliege, N.J.
Author_Institution :
Inst. of Mobile & Satellite Commun. Technique, Kamp-Lintfort, Germany
Abstract :
In this paper a new filter bank is presented. Its main features are exact 1/M-octave-band resolution, subband signals without aliasing and phase distortion, and perfect reconstruction. The system is based on oversampled complementary filter banks. Besides the usual dyadic sampling rate decimation techniques single-sideband modulation and demodulation are used. It is shown, that this filter bank constitutes a Discrete Wavelet Transform. Typical applications are the analysis and simulation of room acoustics in civil engineering and the signal decomposition in hearing aids
Keywords :
band-pass filters; digital filters; transforms; wavelet transforms; 1/M-octave-band filter banks; discrete wavelet transform; dyadic sampling rate decimation techniques; oversampled complementary filter banks; perfect reconstruction; room acoustics; signal decomposition; single-sideband demodulation; single-sideband modulation; subband signals; wavelets; Acoustic applications; Analytical models; Civil engineering; Demodulation; Discrete wavelet transforms; Filter bank; Phase distortion; Sampling methods; Signal analysis; Signal resolution;
Conference_Titel :
Circuits and Systems, 1997. ISCAS '97., Proceedings of 1997 IEEE International Symposium on
Print_ISBN :
0-7803-3583-X
DOI :
10.1109/ISCAS.1997.612810
