Method and apparatus for determining vector acoustic intensity
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorEarl G Williams
Life of this patent
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Abstract
A system and method for determining vector acoustic intensity fields using a spherical array of acoustic sensors, and a regularization technique. A mobile spherical array of a number of microphones that image the acoustic intensity vector throughout a large volume internal and external to the spherical array.
Claims22
A system for determining acoustic intensity at locations inside and outside a spherical array of microphones, the system comprising:
- a spherical array of a plurality of microphones;
- an analog to digital converter for digitizing pressure data from each microphone;
- and
- a processor for determining the acoustic intensity at each location,
- the processor having computer software adapted to apply a regularization filter to spherical wave equations for pressure and velocity.
A computer-implemented method for determining acoustic intensity at locations inside and outside a spherical array of microphones, the method comprising:
- receiving by an analog to digital converter time varying acoustic pressure signals from each microphone in a spherical array of microphones;
- digitizing by the analog to digital converter the acoustic pressure signals from each microphone;
- and
- calculating by a computer processor the vector acoustic intensity at each location, said calculating including applying a regularization filter to spherical wave equations for pressure and velocity.
Dependencies are inferred from the claim text.