Title :
Time-domain design of linear-phase PR filter banks
Author :
Ikehara, Masaaki ; Nguyen, Truong Q.
Author_Institution :
Dept. of Electr. Eng., Keio Univ., Yokohama, Japan
Abstract :
We present a novel way to design biorthogonal and paraunitary linear phase (LPPUFB) filter banks. The square error of the perfect reconstruction condition is expressed in a quadratic form of filter coefficients and the cost function is minimized by solving the linear equation iteratively without nonlinear optimization. With some modifications, the method can be extended to the design of paraunitary filter banks. Using this method, we can design LPPUFB with many channels easily and quickly. Design examples are given to validate the proposed method
Keywords :
band-pass filters; delay circuits; digital filters; filtering theory; iterative methods; linear network synthesis; signal reconstruction; signal synthesis; time-domain synthesis; analysis filters; biorthogonal linear phase filter banks; cost function; digital filter banks; filter coefficients; iterative method; linear equation; linear-phase PR filter banks; paraunitary filter banks; perfect reconstruction condition; quadratic form; synthesis filters; time-domain design; Channel bank filters; Cost function; Design methodology; Filter bank; Frequency domain analysis; Image processing; Image reconstruction; Nonlinear filters; Signal analysis; Time domain analysis;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1997. ICASSP-97., 1997 IEEE International Conference on
Conference_Location :
Munich
Print_ISBN :
0-8186-7919-0
DOI :
10.1109/ICASSP.1997.599356
