Research on the Influence of Background Noise and Its Monitoring Method in Aircraft Noise Monitoring
Based on the monitoring data of typical aircraft noise events,the sound level superposition method was uesd to analyze the influence of background noise on aircraft noise exposure level LAE monitoring.The results showed that in order to guarantee the validity of the measurement data,the background noise should be lower than the maximum sound level of 15 dB for a single aircraft noise event when carrying out airport noise monitoring.By comparing the equivalent sound level Leq with the cumulative percentage sound level L10,L50,L90,L95 and other common noise monitoring indicators,it was proved that the background noise of the cumulative sound level L50 from 5-10 minutes at the same time as a single aircraft noise event was a good representative,and based on this,the method of background noise measurement and processing in airport noise monitoring was proposed.This method is scientific and efficient,and it is suitable for automatic acquisition of background noise through noise monitoring equipment.It has a good reference significance for improving airport noise monitoring methods.
NETL
NSTL
万方数据
