Method of processing electrical signals by means of Fourier tran

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364723, 379410, 380 6, 380 38, H03H 1702, H03H 1706

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046239804

ABSTRACT:
In order to upgrade input signals for further processing, one or more of the input signals is split up by a decimating technique into spectral component signals which are processed according to the desired purpose and recombined by means of an interpolation technique into an output signal. In this manner a digital filtering device can be selectively employed for achieving an arbitrary combination of simultaneous filtering, signal improvement, echo or feedback compensation, or signal masking of the input signals.

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