Application of DFT

Before we learn about application of DFT, first let we check it out the DFT stands for Discrete Fourier transform, it is a finite duration frequency sequence which is obtained by sampling one period of Fourier transform. So in sampling is done at 'N' equally spaced points, over the period extending from o to  2π.
  • Signal analysis
  • Sound filtering
  • Data compression
  • Partial differentiation equation
  • Multiplication of large integer
  • Cross correlation
  • Matched filtering 
  • System identification
  • Power spectrum estimation
  • Coherence function measurement
  • Display signal and spectrum