TY JOUR TI Used in Acoustic Projects Calculation of Reflection Coefficient for End Opening of Channel without Flange KW plane wave KW reflection coefficient KW acoustic impedance KW reflection coefficient module KW hole’s cut-in length KW end correction KW calculation result error KW Bessel function. JO Safety in Technosphere AU Tupov, V.V. AU Mironova, A.N. PY 2017 IS 6 PB INFRA-M Academic Publishing LLC.