A.Yu. Glazova - Post-graduate Student, Professor assistant, Department of Biotechnical Systems, Saint-Petersburg Electrotechnical University «LETI» n.a. V.I. Ulyanov (Lenin). E-mail: anna-glazova777@yandex.ru
A.A. Makarenkova - Ph.D. (Phys.-Math.), Senior Research Scientist, Department of Hydrodynamic Acoustic, Institute of Hydromechanics, The National Academy of Sciences of Ukraine (Kiev, Ukraine). E-mail: maa@mail.ru

T.M. Magrupov1, R.R. Akhmadzhanov2, Z.M. Rakhimberganov3

1,3 Tashkent State Technical University n.a. Islam Karimov (Tashkent, Republic Uzbekistan)
2 "Scientific Center" Medical Equipment and Technology "(Tashkent, Republic of Uzbekistan)
1 talatmt@rambler.ru, 2 akhmadjonovr.98@gmail.com, 3 raximberganovaz@gmail.com