chebwin This function returns the filter coefficients of a Dolph-Chebyshev window. w = chebwin (m) w = chebwin (m, at) m: positive integer value at: real scalar value w: output variable, vector of real numbers This is an Octave function. This function returns the filter coefficients of a Dolph-Chebyshev window of length m supplied as input, to the output vector w. The second parameter is the stop band attenuation of the Fourier transform in dB. The default value is 100 dB.