Title :
Low-delay QMF banks with equiripple complex reconstruction error
Author :
Xu, H. ; Lu, W.-S. ; Antoniou, A.
Author_Institution :
Dept. of Electr. & Comput. Eng., Victoria Univ., BC, Canada
Abstract :
A method for the design of two-channel low-delay QMF banks with equiripple complex reconstruction error is proposed. A weighted objective function in which the reconstruction error is defined in terms of the difference between the frequency response of the filter bank and that of an ideal allpass channel is constructed. Based on this objective function an iterative algorithm is developed which forces the magnitude of the complex reconstruction error to become equiripple. The paper concludes with design examples which illustrate the efficiency of the algorithm and the performance of the filter banks designed
Keywords :
delays; errors; filtering theory; frequency response; iterative methods; quadrature mirror filters; signal processing; equiripple complex reconstruction error; filter bank; frequency response; iterative algorithm; low-delay QMF banks; two-channel bank; weighted objective function; Algorithm design and analysis; Channel bank filters; Computer errors; Delay; Design methodology; Filter bank; Finite impulse response filter; Frequency response; Iterative algorithms; Signal processing algorithms;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.510181
