акустика

Investigation Forecasting Methods of Noise Level From Rail Trams in Lviv City

The method of localization of noise level calculation from a rail vehicle in the city of Lviv is investigated and developed. Models of noise load measurement have been adapted, the measured values have been unified and our own solution has been created on the basis of the road surface, the speed of rail transport and the distance from the noise source. According to the research methods, namely: Schall 03 (from Germany), Nordic Train (Scandinavian countries) was carried out compared to the Bland—Altmann schedule, with which we can adapt the studied results. distance from the noise source.

KEY REGIONAL COMPARISON COOMET.AUV.A-K5. ANALYSIS OF THE RESULTS

The  article  analyzes  the  results  of  bilateral  key  regional  comparison  COOMET.AUV.A-K.5  related  to  the calibration of  one-inch  laboratory  standard microphones  in  the  frequency  range  from 2 Hz  to 10 kHz. The national metrology institutes in the field of acoustics of: Ukraine (DP NDI “Systema”) and Poland (GUM) have been participated in this comparison.