6. 1 Concepts on Digital Filter There are two major issues that need to be answered before one can develop the digital transfer function G(z) a The first issue is the development of a reasonable filter frequency response specification from the requirements of overall system in which the digital filter is to be designed a The second issue is to determine whether an fir or iir digital filter is to be designed 2021年12月5日2时7分2021年12月5日2时7分 6.1 Concepts on Digital Filter ◆There are two major issues that need to be answered before one can develop the digital transfer function G(z).  The first issue is the development of a reasonable filter frequency response specification from the requirements of overall system in which the digital filter is to be designed.  The second issue is to determine whether an FIR or IIR digital filter is to be designed