TY JOUR TI CALCULATION OF THE ACOUSTIC EFFICIENCY OF A LATTICE SCREEN WHILE REDUCING BROADBAND NOISE FROM A POINT SOURCE KW noise shield KW diffraction KW finite element method KW acoustic efficiency KW broadband noise KW grating screen JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Dolger, A.R. AU Kanev, N.G. PY 2026 IS 11 PB Belgorod State Technological University named after V.G. Shukhov