Numerical Analysis II
The Discrete Fourier Transform (DFT) is a mathematical technique used to analyze the frequency components of a discrete signal by transforming it from the time domain into the frequency domain. The DFT takes a finite sequence of equally spaced samples of a function and produces a complex-valued sequence that represents the amplitudes and phases of the frequencies present in the original signal. It serves as a foundation for many applications in signal processing, including audio analysis, image processing, and communications.
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