Digital filter arrangement.

摘要

A sample of an output signal is calculated by forming the sum of the products of a set of samples of an input signal and a set of filter coefficients.
<??>To provide a more accurate encoding of the filter coefficients without great consequences for the hardware, the filter coefficients are encoded by combination of the form:
K1.2<m> + K2.2<n>,
wherein n and m are integers and it holds that for at least one coefficient:
1 < | K1 | < 2 and | K2 | = 0 or 1 or : 1 < | K1 | < 2 and 1 < | K2 | < 2 and means are present for combinatorially multiplying (3) a signal sample by the factor | K1 | , | K2 | which is located between 1 and 2.