In order to save the resources of the Finite Impulse Response（FIR） filter and increase the running speed,it was proposed to use the Least Mean-Square-Error（LMSE） to transfer the float point coefficients filter to the Canonical Signed Digit（CSD） filter.The FIR filter was implemented by the cascades structure,which conjugated pairs of zeros into two basic sections.First,all zeros of the digital filter were calculated,which were made of two cascade sections for an FIR.And then the coefficients of the first cascade were transferred to fixed p...
