Title :
New results and open problems on nonuniform filter-banks
Author :
Akkarakaran, Sony ; Vaidyanathan, P.P.
Author_Institution :
Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA, USA
Abstract :
Nonuniform filter-banks (FBs) have traditionally been built either by cascading uniform ones in a tree structure or by direct design methods that lead to near-perfect reconstruction. However many theoretical issues remain unresolved. This paper begins by pointing out a number of these issues, and summarizes the known conditions for existence of nonuniform perfect reconstruction (PR) FBs. As a new contribution, we simplify some of these conditions and make them more explicit. We provide examples that illustrate some hitherto unobserved connections between these conditions
Keywords :
channel bank filters; delays; digital filters; network synthesis; signal reconstruction; delay chain filter-banks; direct design methods; near-perfect reconstruction; nonuniform perfect reconstruction filter-banks; open problems; tree structure; Bandwidth; Buildings; Channel bank filters; Design methodology; Finite impulse response filter; IIR filters; Sufficient conditions; Tree data structures;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1999. Proceedings., 1999 IEEE International Conference on
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-5041-3
DOI :
10.1109/ICASSP.1999.756268
