Noise reduction filter.

摘要

In a noise reduction filter comprising a weighted average filter (1A) coupled to receive a plurality of input signal samples (O,(+)) and furnishing noise-reduced signal samples, and a delay circuit (3A) which is coupled to an output of the weighted average filter (1A) and which furnishes a plurality of delayed noise-reduced signal samples (X) to a further input of the weighted average filter (1A), weighting coefficients assigned to samples of said input signal (O) and said delayed signal (X) depend on respective differences between a current sample ((+)) of said input signal on the one hand and said samples of said input signal (O) and said delayed signal (X) on the other hand. <IMAGE>