Speed of Sound
I moved from Virginia to Burlington Vermont.
No proper winter clothes, 30 below zero often, and I was not going to ask the evil step father for gloves, hat, scarf, anything..
Freezing miserably, I would hear the school bus coming, and coming, and where was the damn thing? Finally, it appeared.
Someone told me later, when all the moisture is frozen out of the air, sound travels faster, so I heard the bus when it was farther away.. Sure as hell made sense to me.
Because it was the crackling of the ice on the road, it seemed to me that the high frequencies were traveling faster.
So, see sloped fronts, remember that experience, I made a poor connection of the words time-alignment.
Glad I learned about the acoustic centers of various drivers
