6. 1 Concepts on Digital Filter Digital Filter Specification o As in the case of the design of analog filters either the magnitude and or the phase response is specified for the design of a digital filter for most application interest is the development of a realizable or o In most practical applications, the problem approximation to a given magnitude response specification. The phase response of the filter can be corrected by cascading it with an allpass filter. 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  As in the case of the design of analog filters, either the magnitude and/or the phase response is specified for the design of a digital filter for most application.  In most practical applications, the problem of interest is the development of a realizable approximation to a given magnitude response specification. The phase response of the filter can be corrected by cascading it with an allpass filter. ⚫ Digital Filter Specification