Computes the Coefficients of a Hamming Window.

The filter coefficients \(w_i\) of a Hamming window of length n are computed according to the formula $$w_i = 0.54 - 0.46 \cos\frac{2\pi i}{n-1}$$

Usage

hamming.window(n)

Arguments

n

The length of the window.

Value

A vector containing the filter coefficients.

References

For a definition of the Hamming window, see for example
Alan V. Oppenheim and Roland W. Schafer: "Discrete-Time Signal Processing", Prentice-Hall, 1989.

Author

Andreas Weingessel

See also

stft, hanning.window

Examples

hamming.window(10)
#>  [1] 0.0800000 0.1876196 0.4601218 0.7700000 0.9722586 0.9722586 0.7700000
#>  [8] 0.4601218 0.1876196 0.0800000

x<-rnorm(500)
y<-stft(x, wtype="hamming.window")
plot(y)