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 pass
Linear phase in pass band
Sampling frequency 16 kHz
Pass band edge frequency 4.5 kHz
Stop band edge frequency 6 kttz
Pass band gain 0 dB