Signal Processing Toolbox

The Sinc Function

The sinc function computes the mathematical sinc function for an input vector or matrix x. The sinc function is the continuous inverse Fourier transform of the rectangular pulse of width  and height 1.

The sinc function has a value of 1 where x is zero, and a value of

for all other elements of x.

To plot the sinc function for a linearly spaced vector with values ranging from -5 to 5, use the following commands:

• x = linspace(-5,5);
  y = sinc(x);
  plot(x,y)
  
  
  

The pulstran Function

The Dirichlet Function

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