Distributed arithmetic oversampling recursive digital filter

摘要

Distributed arithmetic oversampling recursive digital filter comprising a recursive part constituted by q registers of a circulating nature, a non-recursive part of order p constituted by series registers, a memory divided into N memory blocks, a modulo N counter with alpha outputs, an adder-subtracter connected to the memory, an accumulator register, and a frequency clock fs. The filter is characterized in that the non-recursive part only comprises K series registers, K being an integer defined by the double inequality: (K-1)N+2 alpha -N