V. G. Getmanov, A. D. Modiaev, S. E. Orlov, O. B. Popov
The algorithm of transformation of the frequency discretization of sound signals, based on the using of approximation orthogonal splines is considered. The designing the approximation spline function is described. The estimation of the accuracy of frequency changing of the suggested algorithm and the comparison of the accuracy of frequency changing of the algorithm, based on the interpolation splines, are produced.