What is need of discrete Fourier transform?
Answers
The DFT is one of the most powerful tools in digital signal processing which enables us to find the spectrum of a finite-duration signal.
There are many circumstances in which we need to determine the frequency content of a time-domain signal. For example, we may have to analyze the spectrum of the output of an LC oscillator to see how much noise is present in the produced sine wave. This can be achieved by the discrete Fourier transform (DFT).
Answer:
The DFT is one of the most powerful tools in digital signal processing which enables us to find the spectrum of a finite-duration signal. There are many circumstances in which we need to determine the frequency content of a time-domain signal. ... This can be achieved by the discrete Fourier transform (DFT)