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The method of demodulation of signals with multifrequency modulation

Myelkovska V.M., Sergienko A.M., Stirenko S.G.

Аn algorithm of the sliding recursive discrete Fourier transform (DFT) for the DTMF signal decoding. The algorithm uses the rational fraction numbers for the computational error minimization. The good parameters of the DFT processor configured in FPGA are achieved due to this algorithm implementation.


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