Szukana fraza: [Abstract = "The new method allows us to build the Reed\-Muller form based on the analysis of Walsh\-Hadamard coefficients. The presented method has much less complexity than the procedures which have been applied until now. Both the transforms and the presented Walsh\-Hadamard spectral characterization of the Reed\-Muller expansion are compared. An analysis of the properties of the spectra obtained from these transforms is made."]