| 摘要 |
Measuring device for intensity of sound on surface of noise source includes vibro-transformer installed on surface of source and two measuring microphones that are connected to measuring devices. Microphones are placed in inner cavities of cylindrical tubes that have smooth surface and are separated from microphones with electro-insulating inserts and bushings and the other ends of the tubes are connected to surface of source of noise through viscoelastic and tightening elements. Long axes of tubes are normal to surface of source. One of measuring microphones is installed in the inner tube that can move along cylindrical tube with possibility of fixation. Microphone is insulated from the inner tube with electro-insulating bushing and is fixed in the tube with electro-insulating insert. |
