A method used to design filter banks that allow one to split the spectrum of a signal into non-uniform width subbands is presented. The filters of the banks are obtained by cosine modulation of more than one prototype. The prototypes are designed by imposing the cancellation of the main component of aliasing in the reconstructed signal. Aliasing components and their cancellation in rational sampling factors banks are described and design examples are presented.
Cosine-modulated non-uniform filter banks / F. Argenti;B. Brogelli;E. Del Re. - STAMPA. - (1996), pp. 129-132. (Intervento presentato al convegno Proceedings of the 1996 7th IEEE Digital Signal Processing Workshop tenutosi a Loen, Norway nel 1996) [10.1109/DSPWS.1996.555477].
Cosine-modulated non-uniform filter banks
ARGENTI, FABRIZIO;DEL RE, ENRICO
1996
Abstract
A method used to design filter banks that allow one to split the spectrum of a signal into non-uniform width subbands is presented. The filters of the banks are obtained by cosine modulation of more than one prototype. The prototypes are designed by imposing the cancellation of the main component of aliasing in the reconstructed signal. Aliasing components and their cancellation in rational sampling factors banks are described and design examples are presented.
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