\name{hanning.window}\title{Computes the Coefficients of a Hanning Window.}\usage{hanning.window(n)}\alias{hanning.window}\arguments{\item{n}{The length of the window.}}\description{The filter coefficients \eqn{w_i}{w(i)} of a Hanningwindow of length \code{n} are computed according to the formula\deqn{w_i = 0.5 - 0.5 \cos\frac{2\pi i}{n-1}}{w(i) = 0.5 - 0.5*cos(2*pi*i/(n-1))}}\value{A vector containing the filter coefficients.}\references{For a definition of the Hanning window, see for example\crAlan V. Oppenheim and Roland W. Schafer: "Discrete-Time SignalProcessing", Prentice-Hall, 1989.}\author{Andreas Weingessel}\seealso{stft, hamming.window}\examples{hanning.window(10)x<-rnorm(500)y<-stft(x, wtype="hanning.window")plot(y)}\keyword{ts}