| 摘要 |
A digital filter includes a)-a plurality of means for the sampling (10, 11, 12, 13, 20, 21, 22, 30, 31) with different delays, of an incoming signal (S), and b)-means (7) to carry out a linear combination of samples produced by the said sampling means (10, 11, 12, 13, 20, 21, 22, 30, 31). The filter is characterized in that a sampling frequency (F/2) of at least some of the sampling means (20, 21, 22) which are associated with delays longer than some of the other sampling means (10, 11, 12, 13) is lower than a sampling frequency (F) of said other sampling means.
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