Today, I heard a sound as I was walking home from a claw machine arcade place. I had never noticed before. It came from an ambulance, but not the usual default sharp, high-pitched wail I usually expect. Instead, it was a deep, drawn-out “oooo” that stretched through the street? The noise didn’t just reach my ears, I felt it in my body (it kind of irritated me). It felt thick, as though the sound waves were heavy.