DEVICE FOR DIGITAL PROCESSING WITH FREQUENCY FILTERING AND REDUCED COMPUTATION COMPLEXITY

摘要

The invention concerns a device for processing digital data comprising a module (M2, M3) producing on a data vector of the frequency domain Z(k), wherein k varies from 0 to N-1, a convolution with a function U, convolution which corresponds to a cancellation in the time domain of the samples of the inverse transform of Z(k), characterised in that the function U is in the form: U(k) = sin c(k-k0/2.e)-jπ(α(k-k0/2.P(k)), wherein k0 is a constant integer and P(k) a weighting window symmetrical about k0.