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I'm willing to entertain the notion that frequencies below 80Hz could be directional. I'm sure there IS a lower limit, but I'm not necessarily committed to the idea that 80Hz is IT for Everyone. It's just too convenient.




No doubt, and I absolutely concur. Rather than what frequency is the cutoff, I was really focusing on the fact that we get clues from multiple sources, and that a bomb exploding wasn't a single pure frequency.