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Patent Agency Ranking
公开(公告)号：US20180288559A1
公开(公告)日：2018-10-04
申请号：US16001638
申请日：2018-06-06
Applicant: Huawei Technologies Co., Ltd. , UNIVERSITY OF SOUTHAMPTON
Inventor： Simone FONTANA , Ferdinando OLIVIERI , Filippo FAZI , Philip NELSON
Abstract: The disclosure relates to an apparatus for generating a sound field on the basis of an input audio signal. The apparatus comprises a plurality of transducers, wherein each transducer is configured to be driven by a transducer driving signal ql of the respective transducer; a plurality of filters configured to generate for each transducer the transducer driving signal ql of the respective transducer; and a control unit configured to provide or receive a first transducer driving signal vector q0 of dimension L such that the gradient of J(q;Ψ) with respect to q is zero in (q0;Ψ0), the control unit is further configured to provide a second transducer driving signal vector {tilde over (q)} of dimension L such that the gradient of the cost function J(q;Ψ) with respect to q is [approximately] zero in ({tilde over (q)};{tilde over (Ψ)}), the control unit is configured to provide the second transducer driving signal vector {tilde over (q)}.
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公开(公告)号：US20220322021A1
公开(公告)日：2022-10-06
申请号：US17845616
申请日：2022-06-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Simone FONTANA , Jiang LI , Peter GROSCHE
Abstract: The present disclosure relates to an audio device (900) for providing an improved three-dimensional sound experience by means of the generated soundfield. To achieve this, the audio device (900) comprises a housing (901), which has an elliptical torus shape and a plurality of loudspeakers (903a-903h), and a processing circuitry (1310). The processing circuitry is configured to process a plurality of input signals (L, R, UL, UR) in a manner, which enables the plurality of loudspeakers (903a-903h) to form at least a first (DH1, DH3) and second (DH2) horizontal dipoles for crosstalk cancellation within at least two different frequency ranges (HF, MF), and to form at least a first vertical dipole (DV1, DV3) for sound elevation (1204a, 1204b) of the soundfield. Hereby, the desired frequency ranges (HF, MF) may be adjusted using an appropriated distance of the plurality of loudspeakers (903a-903h).
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3.发明申请公开(公告)号：US20190246228A1
公开(公告)日：2019-08-08
申请号：US16388592
申请日：2019-04-18
Applicant: Huawei Technologies Co., Ltd. , UNIVERSITY OF PARMA
Inventor： Simone FONTANA , Angelo FARINA
CPC classification number: H04S7/301 , H04R29/001 , H04R2499/13 , H04S2400/01 , H04S2400/15
Abstract: The present invention relates to a method and to an apparatus, both arranged for controlling acoustic signals to be recorded or reproduced by an electro-acoustical sound system. For this purpose: an initial digital filter is determined by solving an inverse problem, wherein the initial digital filter is configured to control acoustic signals to be recorded and/or reproduced by the electro-acoustical sound system; a frequency-dependent articulation parameter is determined by executing a time spectral psychoacoustic automatic audio quality test on the initial digital filter; a frequency-dependent regularization parameter, used for determining the initial digital filter, is tuned by use of the frequency-dependent articulation parameter; and, by use of the tuned frequency-dependent regularization parameter, a digital filter configured to control acoustic signals to be recorded or reproduced by the electro-acoustical sound system is determined.
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公开(公告)号：US20190342656A1
公开(公告)日：2019-11-07
申请号：US16435332
申请日：2019-06-07
Applicant: Huawei Technologies Co., Ltd. , University of Southampton
Inventor： Simone FONTANA , Yue LANG , Filippo FAZI , Mincheol SHIN , Ferdinando OLIVERI
Abstract: The disclosure relates to an audio signal processing apparatus for processing an input audio signal, comprising a filter unit comprising a plurality of filters, each filter configured to filter the input audio signal to obtain a plurality of filtered audio signals, each filter designed according to an extended mode matching beamforming applied to a surface of a half revolution, the surface partially characterizing a loudspeaker enclosure shape, a plurality of scaling units, each scaling unit configured to scale the plurality of filtered audio signals using a plurality of gain coefficients to obtain a plurality of scaled filtered audio signals, and a plurality of adders, each adder configured to combine the plurality of scaled filtered audio signals, thereby providing an output audio signal for producing a sound field having a beam directivity pattern defined by the plurality of gain coefficients.
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公开(公告)号：US20180184199A1
公开(公告)日：2018-06-28
申请号：US15894485
申请日：2018-02-12
Applicant: Huawei Technologies Co., Ltd. , University of Southampton
Inventor： Simone FONTANA , Yue LANG , Filippo FAZI , Mincheol SHIN , Ferdinando OLIVERI
CPC classification number: H04R1/403 , H04R3/12 , H04R5/02 , H04R2201/021 , H04R2201/401 , H04R2203/12 , H04R2205/024
Abstract: The disclosure relates to an audio signal processing apparatus for processing an input audio signal, comprising a filter unit comprising a plurality of filters, each filter configured to filter the input audio signal to obtain a plurality of filtered audio signals, each filter designed according to an extended mode matching beamforming applied to a surface of a half revolution, the surface partially characterizing a loudspeaker enclosure shape, a plurality of scaling units, each scaling unit configured to scale the plurality of filtered audio signals using a plurality of gain coefficients to obtain a plurality of scaled filtered audio signals, and a plurality of adders, each adder configured to combine the plurality of scaled filtered audio signals, thereby providing an output audio signal for producing a sound field having a beam directivity pattern defined by the plurality of gain coefficients.
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