公开(公告)号：US20190172479A1

公开(公告)日：2019-06-06

申请号：US16270274

申请日：2019-02-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Wei XIAO ,  Mona HAKAMI ,  Willem Bastiaan KLEIJN

IPC: G10L25/60 ,  G10L15/02 ,  G10L25/03 ,  G10L25/30 ,  G06F17/18

Abstract: The disclosure relates to an apparatus for determining a quality score (MOS) for an audio signal sample, the apparatus comprising: an extractor configured to extract a feature vector from the audio signal sample, wherein the feature vector comprises a plurality of feature values and wherein each feature value is associated to a different feature of the feature vector; a pre-processor configured to pre-process a feature value of the feature vector based on a cumulative distribution function associated to the feature represented by the feature value to obtain a pre-processed feature value; and a processor configured to implement a neural network and to determine the quality score (MOS) for the audio signal sample based on the pre-processed feature value and a set of neural network parameters for the neural network associated to the cumulative distribution function.

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：US20190273987A1

公开(公告)日：2019-09-05

申请号：US16418363

申请日：2019-05-21

Applicant: Huawei Technologies Co., Ltd.

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

IPC: H04R3/00 ,  H04R1/40

Abstract: The invention relates to a sound processing node for an arrangement of sound processing nodes, the sound processing nodes being configured to receive a plurality of sound signals, wherein the sound processing node comprises a processor configured to generate an output signal on the basis of the plurality of sound signals weighted by a plurality of beamforming weights, wherein the processor is configured to adaptively determine the plurality of beamforming weights on the basis of an adaptive linearly constrained minimum variance beamformer using a transformed version of a least mean squares formulation of a constrained gradient descent approach, wherein the transformed version of the least mean squares formulation of the constrained gradient descent approach is based on a transformation of the least mean squares formulation of the constrained gradient descent approach to the dual domain.

公开(公告)号：US20140355767A1

公开(公告)日：2014-12-04

申请号：US14460074

申请日：2014-08-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： David VIRETTE ,  Janusz KLEJSA ,  Willem Bastiaan KLEIJN

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: A method and apparatus for performing an adaptive down-mixing of a multichannel audio signal comprising a number of input channels, wherein a signal adaptive transformation of said input channels is performed by multiplying the input channels with a downmix block matrix comprising a fixed block for providing a set of backward compatible primary channels and a signal adaptive block for providing a set of secondary channels

Abstract translation: 一种用于执行包括多个输入通道的多通道音频信号的自适应降混的方法和装置，其中所述输入通道的信号自适应变换通过将输入通道与包括固定块的下混块矩阵相乘来进行，以提供 一组向后兼容的主信道和用于提供一组次信道的信号自适应块