Signal Processing Toolbox |
The Dirichlet Function
The toolbox function diric
computes the Dirichlet function, sometimes called the periodic sinc or aliased sinc function, for an input vector or matrix x
. The Dirichlet function is
where n is a user-specified positive integer. For n odd, the Dirichlet function has a period of ; for n even, its period is . The magnitude of this function is (1/n) times the magnitude of the discrete-time Fourier transform of the n-point rectangular window.
To plot the Dirichlet function over the range 0 to 4 for n
= 7
and n
= 8
, use
The Sinc Function | Working with Data |
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