Title :
Iterative procedure for designing the GenLOT
Author :
Nagai, Taknyuki ; Tsutsui, Shintaro ; Ikehara, Masaaki
Author_Institution :
Fac. of Sci. & Technol., Keio Univ., Yokohama, Japan
Abstract :
In this research, we propose a new design method for the generalized linear-phase lapped orthogonal transforms (GenLOT). The GenLOT is based on the DCT and has fast implementation algorithm. Generally, the lattice structure is used for its design and implementation. Consequently, nonlinear optimization is required for its design process. In our proposed method, filter coefficients are optimized directly and this method requires one only to solve linear equations iteratively. Moreover, this algorithm converges within a few iterations
Keywords :
band-pass filters; delay circuits; discrete cosine transforms; filtering theory; iterative methods; DCT; GenLOT; filter coefficients; generalized linear-phase lapped orthogonal transforms; implementation algorithm; iterative procedure; linear equations; nonlinear optimization; perfect reconstruction filter banks; Design methodology; Design optimization; Discrete cosine transforms; Equations; Filters; Iterative algorithms; Lattices; Optimization methods; Process design; Time domain analysis;
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.1997.612879
