Detroit, Michigan, west of the river - Windsor, Ontario, east of the river: why is it mostly residents of Windsor who hear it?
The Windsor Hum, can be heard throughout Windsor, Ontario, home to almost 220,000 people, but it has been reported 90 miles away in the US city of Cleveland.
Complaints of the part noise, part vibration arose in 2011, when locals initially compared it to rattling windows.
Comment: Interesting, that's the same year the 'strange sky sounds' phenomenon really took off.
But as the hum began to vary in its intensity, droning on for days at unbearable levels, distressed locals have taken to all forms of social media to question their hearing and vent their frustrations.
Comment: It may not be noise pollution, i.e. man-made. It could also be at least partly natural, but yes, 'new' at the same time.
What's striking in this particular case is that something about the location apparently 'anchors' the noise(s) there very frequently, if you'll excuse the pun. Zug Island, located in the river between the two cities, might in some way function as an 'anchor' or 'transducer' of electrophonic geomagnetic frequencies.
See also: Strange sky sounds: Metallic, groaning, trumpet-like noises heard worldwide in 2016