The Discrete-Time Fourier Transform (DTFT) is a mathematical technique used to analyze discrete-time signals in the frequency domain. It transforms a discrete-time signal, which is a sequence of values defined at distinct time intervals, into a representation in terms of sinusoids or complex exponentials at different frequencies. ### Definition Given a discrete-time signal \( x[n] \), where \( n \) is an integer representing time (e.g.
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