I don't doubt that some people experience hard to explain sounds. I do doubt that any of the sensational headlines in those videos were written by people who we

I don't doubt that some people experience hard to explain sounds. I do doubt that any of the sensational headlines in those videos were written by people who were prepared to consider reasonable explanations. Unfortunately, they were the only people there to look down/around to see if something obvious was making the sound instead of some ethereal oscillator. We only have their word to go by, and it's not much use given their leaning toward supernatural and conspiracy.