Consider the class of discrete-time filters whose frequency response has the form
where |H(ejω)| is a real and nonnegative function of ω and α is a real constant. As discussed in Section 5.7.1, this class of filters is referred to as linear-phase filters.
Consider also the class of discrete-time filters whose frequency response has the form
where A(ejω) is a real function of ω, α is a real constant, and β is a real constant. As discussed in Section 5.7.2, filters in this class are referred to as generalized linear-phase filters.
For each of the filters in Figure P5.15, determine whether it is a generalized linearphase filter. If it is, then find A(ejω), α, and β. In addition, for each filter you determine to be a generalized linear-phase filter, indicate whether it also meets the more stringent
criterion for being a linear-phase filter.
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