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Multirate filter banks

Started by Molnar Levente November 21, 2002
Dear All,

I'm doing my final year project in Digital Signal Processing using
Matlab. I would like to ask for few suggestions or inputs from you.
A very brief description of my FYP project:
I have to split an input signal (formed from N samples) in M frequency
bands (for example 4 bands). After this he I will have to do a polyphase
decomposition of the signals from the M (or 4) frequency bands.
After accomplishing the above things, next is a data processing.
After all these I'll need a synthesis filter bank, which relying on the
signals from the M (or 4) bands, will have to reconstruct the original
signal.
My concern would be, that how these analysis / synthesis filters
(reconstruction filter banks) should be be generated with Matlab code?

How should I implement the analysis multirate filters (splitting the
signal in more frequency bands), and the synthesis multirate filters
(reconstruction of the original signal from the frequency band components)
in Matlab?
I will not have to get involved in the data processing after the
splitting in more frequency bands.

Thank you in advance for any suggestions!

Regards,
LM