TY JOUR TI Research of Acoustic Characteristics related to Noise Release Mufflers of Motor Transport Internal-Combustion Engines KW engine release noise KW noise muffler KW brought losses KW impedance of sound radiation by an opening KW release noise source impedance KW engine’s exhaust manifold KW collector’s acoustic impedance KW resonance oscillations of environment in manifold. JO Safety in Technosphere AU Bangoyan, E.. AU Tupov, V.V. PY 2013 IS 2 PB INFRA-M Academic Publishing LLC.