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公开(公告)号：US10094911B2
公开(公告)日：2018-10-09
申请号：US15531444
申请日：2015-11-18
发明人： Marco Crocco , Vittorio Murino , Andrea Trucco , Samuele Martelli
摘要： A method of processing an acoustic image includes the steps of acquiring acoustic signals generated by acoustic sources in a predetermined region of space, generating a multispectral 3D acoustic image that includes a collection of 2D acoustic images, performing a frequency integration of the multispectral acoustic image for generating a 2D acoustic map, locating at least one target acoustic source of interest and modeling the signal spectrum associated with the target acoustic source, generating a classification map obtained by comparing the signal spectrum of each signal associated with each pixel of the multispectral acoustic image and the model of the signal spectrum associated with the target acoustic source to distinguish the spectrum of the signal associated with the target acoustic source from the signal spectra associated with the remaining acoustic sources, and merging the classification map and the acoustic map to obtain a merged map.
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公开(公告)号：US10006998B2
公开(公告)日：2018-06-26
申请号：US14654416
申请日：2014-01-22
发明人： Marco Crocco , Andrea Trucco , Vittorio Murino
CPC分类号： G01S15/89 , G10K11/341 , H04R1/406 , H04R3/005 , H04R2201/401 , H04R2201/405
摘要： A method of configuring planar transducer arrays for broadband signal processing by 3D beamforming, wherein a superdirective beamforming technique for low-frequency signal components is combined with a sparse and aperiodic array pattern for high-frequency components in a predetermined frequency range, and wherein the positions of the individual transducers at the aperture of the array and the FIR filter coefficients are further optimized in parallel, by a hybrid iterative process including an analytical calculus for determining the FIR filter coefficients and a stochastic calculus for determining the transducer positions at the aperture of the planar transducer arrays, by minimization of a cost function.
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