Some Random Guy
Striker
I always thought the brown noise was the one that made you shit yourself.Look into Brown noise. It’s the homogeneous effect of multiple sound frequencies. Derived from White noise but modified to reduce higher frequency sounds. This could be almost anywhere there is background sound at low frequencies. It’s also possible that some humans don’t detect such low frequencies at a distance as others which would go some way to explaining why some hear it, others don’t.
Cheers southpark.