We live in an increasingly cacophonous world. Even here in Baiting Hollow, where the background noise level (in the absence of aircraft) is around 20 dB, quiet is rare, mainly because of aircraft (for example, the above recent livestream). We are on the direct routes from Manhattan to East Hampton (mostly smaller low flying aircraft, around 2500 feet or lower) and Europe to JFK (jumbo jets at 10,000 feet), and there's an enormous amount of General Aviation, including a nearby farmer who jumps in his plane and circles over me whenever the skies are quieter. But I remember as a child of 10 looking up with interest when once every few days a plane appeared in the sky (as I still do in Eleuthera). The following graph (https://www.icao.int/sustainability/Pages/Facts-Figures_WorldEconomyData.aspx) tells the story:
From the Wikipedia article on aircraft noise:
"A large-scale statistical analysis of the health effects of aircraft noise was undertaken in the late 2000s by Bernhard Greiser for the Umweltbundesamt, Germany's central environmental office. The health data of over one million residents around the Cologne airport were analysed for health effects correlating with aircraft noise. The results were then corrected for other noise influences in the residential areas, and for socioeconomic factors, to reduce possible skewing of the data.