Signal Matched Non-uniform Filter Bank
نویسندگان
چکیده
In this paper we present a non-uniform `filter bank (NUFB) matched to a given signal. To obtain matched M-channel NUFB, first, we choose the decimation set having M-down sampling/decimation factors for which perfect reconstruction NUFB exist and then using novel approach proposed in this paper, M-channel signal matched analysis bank is estimated. The outputs of all filters at the analysis side of proposed filter bank are mutually as well as across various channels are uncorrelated. By using well established theory of multirate filter bank, M-channel NUFB matched to signal is obtained. The analysis filters obtained in this paper are found to be FIR whereas synthesis filters are FIR or IIR. Finally, the result of simulation for deterministic case is appended in the table. Filter bank obtained in this fashion will be useful to compress code or represent the signal or image in the best possible manner.
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