diric - Dirichlet or periodic sinc function
Syntax
y = diric(x,n)
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 2π for n odd and period 4π
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:
Requires n to be a positive integer.
See Also
cos, gauspuls, pulstran, rectpuls, sawtooth, sin, sinc, square, tripuls
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