[Authors] S. N. Pakhomov [Title] The calculation of sliding Fourier spectrum [AMS Subj-class] 65T50 Discrete and fast Fourier transforms [Abstract] The fast algorithm for the calculation of sliding Fourier spectrum is elaborated. Efficiency evaluation in comparison with other algorithms is done. [Comments] Russian, 7 pp. [Contact e-mail] sergeypakhomov@mail.ru