Noise Readings on WebTrak
Noise readings shown on WebTrak at the numerous noise monitors in the vicinity of the airport are represented by the A-weighted sound pressure level reading. A-weighted decibels, abbreviated dBA, are an expression of the relative loudness of sounds in air as perceived by the human ear. These noise levels represent the actual sound level at that location at that moment in time, and may be the result of an aircraft flying over or near the noise monitor. These noise levels may also be attributed to community-based noise, such as vehicle traffic, lawnmowers, etc., or just the ambient noise at that location.