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Design linear phase FIR low pass filter of length T and cut of frequency 1 rad/sec using hamming window.
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Step-1: Identify the specification of filter

N=7∝=3ωc=1<ω<1

Window Type: Hamming

Step-2: Calculate the Inverse Fourier Transform of H(ω)

hd(n)=12πωc(ωcHd(ω)ejωndω

=12π11ej3ωejωnd

=12π11ej(n3)ωdω

=12π[ej(n3)ω)(j(n3))]11

=1(π(n3))[(ej(n3)ej(n3)))2j]

hd(n)=sin(n3)(π(n3))

hd(0)=0.014=hd(6) {by linear phase property}

hd(1)=0.144=hd(5)

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