公开(公告)号：US09830926B2

公开(公告)日：2017-11-28

申请号：US15248597

申请日：2016-08-26

Applicant: Huawei Technologies Co., Ltd.

Inventor： Karim Helwani ,  Liyun Pang

IPC: H04B3/20 ,  G10L21/0232 ,  G10L21/0208 ,  G10L19/008

CPC classification number: G10L21/0232 ,  G10L19/008 ,  G10L21/0208 ,  G10L2021/02082

Abstract: A signal processing apparatus for dereverberating a number of input audio signals, where the signal processing apparatus includes a processor configured to transform the number of input audio signals into a transformed domain to obtain input transformed coefficients, the input transformed coefficients being arranged to form an input transformed coefficient matrix, determine filter coefficients upon the basis of eigenvalues of a signal space, the filter coefficients being arranged to form a filter coefficient matrix, convolve input transformed coefficients of the input transformed coefficient matrix by filter coefficients of the filter coefficient matrix to obtain output transformed coefficients, and the output transformed coefficients being arranged to form an output transformed coefficient matrix.

公开(公告)号：US20180012607A1

公开(公告)日：2018-01-11

申请号：US15714465

申请日：2017-09-25

Applicant: Huawei Technologies Co., Ltd.

Inventor： Panji Setiawan ,  Karim Helwani

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  H04S3/008 ,  H04S2400/01 ,  H04S2400/03

Abstract: Audio signal processing apparatuses and methods are provided, such as an audio signal downmixing apparatus for processing an input audio signal into an output audio signal, wherein the input audio signal comprises a plurality of input channels recorded at a plurality of spatial positions and the output audio signal comprises a plurality of primary output channels. The audio signal downmixing apparatus comprises a downmix matrix determiner configured to determine for each frequency bin j of a plurality of frequency bins a downmix matrix DU with j being an integer in the range from 1 to N, and a processor configured to process the input audio signal using the downmix matrix DU into the output audio signal.

公开(公告)号：US20170316585A1

公开(公告)日：2017-11-02

申请号：US15651673

申请日：2017-07-17

Applicant: Huawei Technologies Co., Ltd.

Inventor： Karim Helwani ,  Lukasz Kondrad ,  Nicola Piotto

IPC: G06T7/00 ,  H04N1/48 ,  H04N1/60 ,  G06T7/90 ,  H04N9/73 ,  H04N5/247

CPC classification number: G06T7/97 ,  G06T7/90 ,  G06T2207/10024 ,  G06T2207/10152 ,  G06T2207/20221 ,  H04N1/486 ,  H04N1/6077 ,  H04N1/6086 ,  H04N5/247 ,  H04N9/735 ,  H04N13/243 ,  H04N13/246 ,  H04N13/257 ,  H04N17/002

Abstract: An image processing device performing color balancing of a first image and at least a second image is provided. The image processing device comprises a color balancing determination unit and a color balancing calculation unit.The color balancing determination unit determines a global gain vector (t) comprising at least two gain factors (ân, ân+1) of the first and second images by minimizing a cost function based upon reference pixel values of the first and second images. The first and second image reference pixels depict a shared color scene of the two images.The color balancing calculation unit performs color balancing of the first image based upon the gain factor (ân) of the first image and to perform a color balancing of the second image based upon the gain factor (ân+1) of the second image.

公开(公告)号：US20170070838A1

公开(公告)日：2017-03-09

申请号：US15343709

申请日：2016-11-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Karim Helwani ,  Peter Grosche ,  Yue Lang

IPC: H04S7/00 ,  H04S3/00 ,  H04R5/04 ,  G06F3/01 ,  H04R5/02

CPC classification number: H04S7/303 ,  G06F3/012 ,  H04R5/02 ,  H04R5/04 ,  H04R2499/11 ,  H04S3/00 ,  H04S3/008 ,  H04S5/005 ,  H04S7/00 ,  H04S7/30 ,  H04S7/305 ,  H04S2400/01 ,  H04S2420/01

Abstract: An audio signal processing device for generating a plurality of output signals for a plurality of loudspeakers from an input audio signal comprises a driving function determining unit adapted to determined driving functions of a plurality of loudspeakers for generating a virtual left binaural signal source and a virtual right binaural signal source based upon a position and a directivity of the virtual left binaural signal source, a position and a directivity of the virtual right binaural signal source and positions of the plurality of loudspeakers. Moreover, it comprises a filtering unit adapted to filter a left binaural signal and a right binaural signal using the driving functions of the plurality of loudspeakers resulting in the plurality of output signals. The left binaural signal and the right binaural signal constitute the input audio signal or are derived there from.

Abstract translation: 一种用于从输入音频信号产生多个扬声器的多个输出信号的音频信号处理装置包括：驱动功能确定单元，适于确定用于产生虚拟左双耳信号源的多个扬声器的驱动功能和虚拟右 基于虚拟左双耳信号源的位置和方向性，虚拟右双耳信号源的位置和方向性以及多个扬声器的位置的双耳信号源。 此外，它包括滤波单元，其适于使用导致多个输出信号的多个扬声器的驱动功能来过滤左双耳信号和右双耳信号。 左双耳信号和右双耳信号构成输入音频信号或从中导出。