Signal Processing Toolbox

hann

Compute a Hann (Hanning) window.

Syntax

w = hann(n)
w = hann(n,'sflag')

Description

w = hann(n) returns an n-point symmetric Hann window in the column vector w. n must be a positive integer. The coefficients of a Hann window are computed from the following equation.

w = hann(n,'sflag') returns an n-point Hann window using the window sampling specified by 'sflag', which can be either 'periodic' or 'symmetric' (the default). When 'periodic' is specified, hann computes a length n+1 window and returns the first n points.

Note    If you specify a one-point window (n=1), the value 1 is returned.

Examples

w = hann(64);
plot(w); title('Hann Window')

See Also

bartlett	Compute a Bartlett window.
blackman	Compute a Blackman window.
boxcar	Compute a rectangular window.
chebwin	Compute a Chebyshev window.
hamming	Compute a Hamming window.
kaiser	Compute a Kaiser window.
triang	Compute a triangular window.

References

[1] Oppenheim, A.V., and R.W. Schafer, Discrete-Time Signal Processing, Prentice-Hall, 1989, pp. 447-448.

hamming

hilbert