Discrete Fourier transform

DFT stands for Discrete Fourier transform, it is a finite duration frequency sequence which is obtained by sampling one period of Fourier transform. Sampling is done at 'N' equally spaced points, over the period extending from o to  2π. Read more

1. Signal analysis 2. Sound filtering Read more

Find the DFT of the following finite equation sequence of length L.

x(n) = A for 0≤ n ≤   L-1
       = 0 otherwise     Read more 

Properties of DFT 
1. Linearity 2. Time shifting 3.  
3. Conjugation 4. Time Reversal Read more

Relationship between DFT and Z transform

X(K) = X(Z)  At Z = ej2πKn/N        Read more