Communications – electrical: acoustic wave systems and devices – Distance or direction finding – With plurality of transducers
Reexamination Certificate
2011-06-28
2011-06-28
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Distance or direction finding
With plurality of transducers
Reexamination Certificate
active
07969821
ABSTRACT:
A method and system for locating a sound source within a defined area in which the sound data is collected with a plurality of spaced apart microphones. The sound data received by the microphones is processed to form a cross spectral density matrix containing vectors of cross correlations and auto correlations of the sound data. A replica vector matrix containing sound data from at least one test sound at a plurality of predetermined locations within the defined area is then constructed. The sound data vectors in the cross spectral density matrix are then projected on the replica vectors in the replica vector matrix to obtain a probability of the location of the sound source at each predetermined location within the defined area. These probabilities form a distribution within the defined area in which the largest probability distribution correlates with the location of the sound source.
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Gifford Krass Sprinkle Anderson & Citkowski P.C.
Pihulic Dan
Toyota Motor Engineering & Manufacturing North America, Inc
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