Scientists Create World's Tiniest "Ear"

How do you deal with noise for something this sensitive? If you're trying to measure the sound of a bacterium, and someone coughs, or walks by the room, or a truck drives by, how do you cancel that out?

I guess I just don't see how their SNR can be high enough with something that sensitive.

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/SjTpVVm5syw/scientists-create-worlds-tiniest-ear

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