Digital processing apparatus with frequency filtering and reduced computational complexity.

摘要

Treatment device digital data comprising a module (M2, M3, M '' 3) to perform on a data vector of frequency domain Z (k), where k varies from 0 to N-1, a convolution with one U, convolution corresponds to a cancellation in the time domain of samples of the inverse transform of Z (k), characterized in that the function U is of the form function (see formula) where k 0 is a constant integer, P ( k) is a weighting window symmetric about k 0 and alpha is a constant.