We have learned that practical FIR filters can be designed by a windowing method. Let's say we have an ideal LPF and its impulse response can be shown as below. You will use three different windows below to make this ideal LPF practical. wi *** *** wi ** Window 1 Window 2 A Windowed LPF's frequency response (magnitude response) is randomly given as below B (a) Connect which window results in which spectrum Your answer, for example, can be Window1-A, Window2-8, Window3-C Window 3 (b) Explain how you choose the right pairs in (a).