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What is the program that is used to speed the spectrum analysis process?

What is the program that is used to speed the spectrum analysis process? Correct Answer Fast Fourier transforms

The DFT is a complex program that is long and time-consuming to run. In general, computers are not fast enough to perform DFT in real time as the signal occurs. Therefore, a special version of the algorithm has been developed to speed up the calculation. Known as the fast Fourier transform (FFT), it permits real-time signal spectrum analysis.

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