Importance

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Abstract

Noises made by the flow of blood in the human cardiovascular system, respiratory and skeletal noises made in the joints of a skeletal animal provide a wide variety of sounds which, when the human body is partially or completely immersed in a body of acoustically transmissive liquid, are directly coupled to the acoustically transmitted liquid and thus launched into acoustically transmitted liquid. The cardiovascular system has a unique acoustic signature. Joints, for example, which are injured or diseased have unique acoustic signatures e.g., sound they make, which are launched into the water and thus each individual's skeletal system make or produce a unique pattern of noise or sounds which are normally inaudible, but when immersed in a body of water can be detected by hydrophones or underwater microphones. The invention has use in locating missing or lost divers, surveillance of bodies of water for serepititous entry thereto for safe-guarding swimming pools, etc.

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First Claim