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1. A rectangular window with 25 terms is used to design a low pass FIR filter. The pass band edge is located at 2 kHz and the pass band gain is about 0 dB. For a samplin frequency of 20 kHz:
a. Detennine the transition width in Hz.b. Draw the filter shape as \H(f)\ versus f in Hz.
2. Find and plot the impulse response for a filter with the following specifications:Low passLinear phase in pass bandSampling frequency 16 kHzPass band edge frequency 4.5 kHzStop band edge frequency 6 kttzPass band gain 0 dB
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