@ Paradox
The sounds I heard in Miami were represented in this video
@ 1:16 through 1:27
@ 1:30 through 1:47
@ 2:25 through 3:13
What they were? I don't know. I only know that it sounds that loud and it is very often continuous for a period of time. Then it stops. Then days pass and it starts up again.
I hope that answers your question.