tukeywin This function returns the filter coefficients of a Tukey window. w = tukeywin (m) w = tukeywin (m, r) m: positive integer r: positive real number, between 0 and 1 This is an Octave function. This function returns the filter coefficients of a Tukey window of length m supplied as input, to the output vector w. The second parameter r defines the ratio between the constant and cosine section and its value has to be between 0 and 1, with default value 0.5.