Title :
A class of generalized cosine-modulated filter bank
Author :
Nguyen, Trriorig Q.
Author_Institution :
Lincoln Lab., MIT, Lexington, MA, USA
Abstract :
It is well known that FIR (finite impulse response) filter banks which satisfy the perfect reconstruction (PR) property can be obtained by cosine modulation of a linear-phase prototype filter of length N =2mM, where M is the number of channels. Moreover, the overall delay of this system is (2mM-1) samples. The author presents a PR cosine-modulated filter bank in which its overall delay is (2(α+1)M-1) samples, where α is a positive integer in the range 0⩽α⩽2m-2. Consequently, as is shown, the prototype filter of the proposed filter bank no longer has linear phase
Keywords :
delays; digital filters; FIR; generalized cosine-modulated filter bank; overall delay; perfect reconstruction; prototype filter; Contracts; Cost function; Delay effects; Delay systems; Filter bank; Finite impulse response filter; Laboratories; Nonlinear filters; Prototypes; Sampling methods;
Conference_Titel :
Circuits and Systems, 1992. ISCAS '92. Proceedings., 1992 IEEE International Symposium on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-0593-0
DOI :
10.1109/ISCAS.1992.230065
