III. You have to design an FIR High Pass filter with 1500 Hz and 1800 Hz stopband edge and passband edge frequencies respectively. The stop band attenuation is 48 dB and the sampling rate is 8000 sps.
a) Choose a window and write the mathematical expression w(n) for that window.
b) What is the number "N" of filter elements?
c) Write the general formula that you use to compute the filter elements.
d) Compute the filter elements for n=-2, n=-1, and n=0.