If X(k) is the N-point DFT of a sequence x(n), then what is the DFT of x*(n)?
If X(k) is the N-point DFT of a sequence x(n), then circular time shift property is that N-point DFT of x((n-l))N is X(k)e-j2πkl/N.
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What is the circular convolution of the sequences x1(n)={2,1,2,1} and x2(n)={1,2,3,4}, find using the DFT and IDFT concepts?
What is the circular convolution of the sequences x1(n)={2,1,2,1} and x2(n)={1,2,3,4}?
If x1(n),x2(n) and x3(m) are three sequences each of length N whose DFTs are given as X1(k),X2(k) and X3(k) respectively and X3(k)=X1(k).X2(k), then what is the expression for x3(m)?
. If x(n) is real and odd, then what is the IDFT of the given sequence?
d) None of the mentioned
If x(n) is real and even, then what is the DFT of x(n)?
d) None of the mentioned
If x(n) is a real sequence and X(k) is its N-point DFT, then which of the following is true?
If x(n) is a complex valued sequence given by x(n)=xR(n)+jxI(n), then what is the DFT of xR(n)?
If X1(k) and X2(k) are the N-point DFTs of x1(n) and x2(n) respectively, then what is the N-point DFT of x(n)=ax1(n)+bx2(n)?
32 videos|76 docs|63 tests
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32 videos|76 docs|63 tests
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