METHOD AND SYSTEM FOR LOCATING A WAVE SOURCE WITHIN A DEFINED AREA
First Claim
1. A method for locating a sound source within a defined area comprising the steps of:
- receiving sound data with a plurality of spaced apart microphones,creating a cross spectral density matrix containing vectors of cross correlations and auto correlations of the sound data,creating a replica vector matrix containing sound data from at least one test sound at a plurality of predetermined locations within the defined area,projecting the sound data vectors on the replica vectors to obtain a probability of the location of the sound source at each predetermined location, said probabilities forming a distribution in the defined area,outputting a signal representative of the largest probability distribution as the location of the sound source within the defined area.
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Accused Products
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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Citations
34 Claims
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1. A method for locating a sound source within a defined area comprising the steps of:
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receiving sound data with a plurality of spaced apart microphones, creating a cross spectral density matrix containing vectors of cross correlations and auto correlations of the sound data, creating a replica vector matrix containing sound data from at least one test sound at a plurality of predetermined locations within the defined area, projecting the sound data vectors on the replica vectors to obtain a probability of the location of the sound source at each predetermined location, said probabilities forming a distribution in the defined area, outputting a signal representative of the largest probability distribution as the location of the sound source within the defined area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A system for locating a sound source within a defined area comprising:
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means for receiving sound data with a plurality of spaced apart microphones, means for creating a cross spectral density matrix containing vectors of cross correlations and auto correlations of the sound data, means for creating a replica vector matrix containing sound data from at least one test sound at a plurality of predetermined locations within the defined area, means for projecting the sound data vectors on the replica vectors to obtain a probability of the location of the sound source at each predetermined location, said probabilities forming a distribution in the defined area, and means for outputting a signal representative of the largest probability distribution as the location of the sound source within the defined area. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A method for locating a wave source within a defined area comprising the steps of:
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receiving wave data with a plurality of spaced apart wave receivers, creating a cross spectral density matrix containing vectors of cross correlations and auto correlations of the wave data, creating a replica vector matrix containing wave data from at least one test wave at a plurality of predetermined locations within the defined area, projecting the wave data vectors on the replica vectors to obtain a probability of the location of the wave source at each predetermined location, said probabilities forming a distribution in the defined area, outputting a signal representative of the largest probability distribution as the location of the sound source within the defined area. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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Specification