On an iterative method to design oversampled GDFT filterbanks (CROSBI ID 508223)
Prilog sa skupa u zborniku | izvorni znanstveni rad | međunarodna recenzija
Podaci o odgovornosti
Dumitrescu, Bogdan ; Bregović, Robert ; Saramäki, Tapio
engleski
On an iterative method to design oversampled GDFT filterbanks
We have recently proposed an algorithm for the simplified design of generalized DFT modulated filterbanks. The algorithm produces very good designs, but its execution time becomes unacceptably long for prototype filters lengths greater than 200. The main cause is the initialization step, in which an orthogonal filterbank is found. In the present paper, we study two alternative initialization methods. The most successful is based on the design of a reduced length filterbank from which, by interpolation, a good initialization of nominal length can be found. Examples illustrate the quality and eficiency of this approach.
Filterbanks; GDFT; Semi-definite programing
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Podaci o prilogu
1-6-x.
2005.
objavljeno
Podaci o matičnoj publikaciji
Proceedings of the 2005 International TICSP Workshop on Spectral Methods and Multirate Signal Processing, SMMSP 2005
Astola, Jaako ; Egiazarian, Karen ; Saramäki, Tapio
Tampere: Tampere International Center for Signal Processing
Podaci o skupu
2005 International TICSP Workshop on Spectral Methods and Multirate Signal Processing
predavanje
20.06.2005-22.06.2005
Riga, Latvija