Sensor and method for detecting very low frequency acoustic...

Details Sensor and method for detecting very low frequency acoustic... Sensor and method for detecting very low frequency acoustic...

2006-06-27

2006-06-27

Hindenburg, Max F. (Department: 3736)

Surgery

Diagnostic testing

Detecting sound generated within body

Reexamination Certificate

active

07066894

ABSTRACT:
There is disclosed a sensor and method for detecting very low frequency acoustic signals. The sensor is capable of detecting low frequency acoustic signals in the frequency range of one tenth Hertz to thirty Hertz. The sensor comprises a chamber having portions that form a cavity and a low frequency microphone placed within the cavity. An alternate embodiment of the invention comprises a chamber having portions that form a resonant cavity, a low frequency microphone placed within the resonant cavity, and a membrane that covers the resonant cavity. Low frequency acoustic signals that are incident on the membrane cause the membrane to move and amplify the acoustic signals within the resonant cavity.

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