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Discrete Time Fourier Transform

The discrete-time Fourier transform (DTFTX(ejω) of a discrete-time signal x(n) is expressed as

X(ejω) = 1019.png

or DTFT x(n) = X(ejω)

And Inverse Discrete-Time Fourier Transform (IDTFT) is expressed as

x(n) = 1025.png

or IDTFT X(ejω) = x(n)


Table: Properties of Discrete-time Fourier Transform

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