2. Let’s consider the IIR filter expressed by (where `b’ is positive) y[n]= 0.9 y[n]-11+ `b’ (a) Decide the proper value of ‘b’ to have [H(0)]=1. Once done, decide the discrete frequency of 3 dB bandwidth, Waft. (5)
(b) Based on the result of part (a), what is the type of this filter (LPF, HPF or BPF) Give proper reasoning for your answer. (3)
2. Let’s consider the IIR filter expressed by (where `b’ is positive) y[n]= 0.9 y[n]-11+ `b’ (a) Decide the proper value of ‘b’ to have [H(0)]=1. Once done, decide the discrete frequency of 3 dB bandwidth, Waft. (5) (b) Based on the result of part (a), what is the type of this filter (LPF, HPF or BPF) Give proper reasoning for your answer. (3)
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