Low Frequencies

Mike-B posted:

TOBYJUG posted:

Elephant 14Hz

I'll see your 14Hz elephant & raise you a 3Hz Sumatran Rhino

........... ??? I wonder how they got an elephant to press the little hearing test button without breaking it ???  

Don't be silly Mike ... they use a LARGE hearing test button!

joerand posted:

Filipe posted:

Darwinian evolution theory suggests that each creature will have a hearing range that maximises the survival of the species. Treats from predators, finding food, finding a mate are factors. Whales may have even lower sensitivity than elephants as their songs travel long distances in the oceans. 

As you bring up the point of evolution, whales and elephants .... it's interesting to note that the two are thought to share evolutionary lines.

Those wouldn't be the 'bass lines' would they?  

joerand posted:

Filipe posted:

Darwinian evolution theory suggests that each creature will have a hearing range that maximises the survival of the species. Treats from predators, finding food, finding a mate are factors. Whales may have even lower sensitivity than elephants as their songs travel long distances in the oceans. 

As you bring up the point of evolution, whales and elephants .... it's interesting to note that the two are thought to share evolutionary lines.

Yes, I can see that - some early mammoths discovered the delights of snorkelling and decided to stay in the sea, their big ears, which are just pinnae not the ear organ, making passable flippers before their legs evolved and the trunk naturally evolved to become ever longer allowing deeper dives. Then a mutation with the blowhole and larger lung capacity enabled effective holding of breath while diving and breathing at the surface without need of the trunk, and the blowhole mutants did better at mating as they didn't need to concentrate to keep a trunk extended above the surface as the throes of passion took them beneath the waves. Eventually the trunk withered away, which is why there are no whales with trunks today, but of course their low frequency hearing remained as it proved very effective for communicating under water.

I'll bet their eardrums heard this one