Particulate flow detection microphone

Details Particulate flow detection microphone Particulate flow detection microphone

2005-05-31

2009-08-25

Ensey, Brian (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Microphone capsule only

C381S355000, C381S369000

Reexamination Certificate

active

07580533

ABSTRACT:
Gas containing particles or droplets flowing continuously through a microphone is perturbed by sound waves. Sound-induced localized pressure changes in the gas are measured by detecting variations in gas opacity with an optical transducer disposed transverse to the flow direction.

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