By means of the DFT and IDFT, determine the response of the FIR filter – McqOptions

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1.	By means of the DFT and IDFT, determine the response of the FIR filter with impulse response h(n)={1,2,3} to the input sequence x(n)={1,2,2,1}?
A.	{1,4,11,9,8,3}
B.	{1,4,9,11,8,3}
C.	{1,4,9,11,3,8}
D.	{1,4,9,3,8,11}
Answer» C. {1,4,9,11,3,8}

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