| Signal Processing Toolbox | |
Compute the Dirichlet or periodic sinc function
Syntax
Description
y = diric(x,n)
returns a vector or array y the same size as x. The elements of y are the Dirichlet function of the elements of x. n must be a positive integer.
The Dirichlet function, or periodic sinc function, is
for any nonzero integer n. This function has period 2
for n odd and period 4 for n even. Its peak value is 1, and its minimum value is -1 for n even. The magnitude of this function is (1/n) times the magnitude of the discrete-time Fourier transform of the n-point rectangular window.
Diagnostics
If n is not a positive integer, diric gives the following error message:
See Also
cos, gauspuls, pulstran, rectpuls, sawtooth, sin, sinc, square, tripuls
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