Title :
A new factorization and structure for cosine modulated filter banks with variable system delay
Author :
Schuller, Gerald
Author_Institution :
Inst. fur Theor. Nachrichtentech. und Inf., Hannover Univ., Germany
Abstract :
A new design method for biorthogonal modulated filter banks is presented. It is based on a cascade of simple matrices, and it has some properties that have not been reported before. It represents filter banks with arbitrary overall system delay and filter length, it is shown that almost all cosine modulated filter banks can be described by this structure, and that it leads to a more efficient implementation than previous structures. Imposing certain symmetries on the matrices can be used to design low delay filter banks with identical (except for the sign) baseband impulse responses for the analysis and synthesis filter bank.
Keywords :
FIR filters; band-pass filters; delays; filtering theory; matrix algebra; modulation; signal synthesis; analysis filter bank; baseband impulse responses; biorthogonal modulated filter banks; cosine modulated filter banks; factorization; filter length; low delay filter banks; matrices; synthesis filter bank; system delay; variable system delay; Baseband; Channel bank filters; Delay systems; Design methodology; Filter bank; Finite impulse response filter; Frequency; Process design; Sampling methods; Signal synthesis;
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-7646-9
DOI :
10.1109/ACSSC.1996.599159
