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Find the IDFT of the sequence $X(K)=\{10,-2+2 j,-2,-2-2 j\}$
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Solution:

The twiddle factors are,

$ w_h^0=1, \quad w_h^{\prime}=-j $

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The output $N x^*(n)$ is the normal order. Therefore $x(n)=\{1,2,3,4\}$.

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