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

IPC: H04R1/40 ,  H04R5/02 ,  H04R3/12

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.

公开(公告)号：US20180270573A1

公开(公告)日：2018-09-20

申请号：US15940635

申请日：2018-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yue LANG ,  Wenyu JIN ,  Thomas SHERSON ,  Richard HEUSDENS ,  Willem Bastiaan KLEIJN

IPC: H04R3/00 ,  H04R1/40

CPC classification number: H04R3/005 ,  G10L21/0208 ,  G10L21/0232 ,  G10L2021/02166 ,  H04R1/406 ,  H04R2201/401 ,  H04R2420/07

Abstract: A sound processing node for an arrangement of sound processing nodes is disclosed. The sound processing nodes being configured to receive a plurality of sound signals, wherein the sound processing node comprises a processor configured to determine a beamforming signal on the basis of the plurality of sound signals weighted by a plurality of weights, wherein the processor is configured to determine the plurality of weights using a transformed version of a linearly constrained minimum variance approach, the transformed version of the linearly constrained minimum variance approach being obtained by applying a convex relaxation to the linearly constrained minimum variance approach.

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

IPC: H04R1/40 ,  H04R3/12 ,  H04R5/02

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.