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How to detect a heart beat or rythum in a room? Answered

I have heard about the government and companies doing this kind of thing.  Does anyone know how or have an  idea of how, to detect a heart beat in a room or even multiple heart beats?

Thanks in advance.

Discussions

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Sandisk1duo
Sandisk1duo

10 years ago

a really sensitive mike with advanced sound processing software

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bumpus
bumpus

10 years ago

Somebody's been playing a bit to much MW2.
;-)