That recording was in one of the data center’s driveways along a 2-lane residential road, where one car passed as I was recording. In the moment, I felt like I could easily distinguish between the data center hum and the car passing. I record and edit a decent of amount of audio, so it could be that I am tuned to perceive subtle differences. I also went to another side of the data center along a busy 4-lane highway with much more traffic, and I could hear the same background hum there, too, between cars passing (not recorded). The two types of sound were distinct. Since both of those listening sessions were right up against their property, I plan to go back and record from a nearby residential neighborhood, something closer to .1 mi away. I am interested in how fast the volume drops off with distance.
Definitely hear some background noise in the datacenter recording, but I'm pretty sure it is just road noise.
That recording was in one of the data center’s driveways along a 2-lane residential road, where one car passed as I was recording. In the moment, I felt like I could easily distinguish between the data center hum and the car passing. I record and edit a decent of amount of audio, so it could be that I am tuned to perceive subtle differences. I also went to another side of the data center along a busy 4-lane highway with much more traffic, and I could hear the same background hum there, too, between cars passing (not recorded). The two types of sound were distinct. Since both of those listening sessions were right up against their property, I plan to go back and record from a nearby residential neighborhood, something closer to .1 mi away. I am interested in how fast the volume drops off with distance.