公开(公告)号：US11062715B2

公开(公告)日：2021-07-13

申请号：US16785174

申请日：2020-02-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting Li ,  Bin Wang ,  Lei Miao

IPC: G10L19/008 ,  G10L19/20 ,  G10L19/22 ,  H04S1/00 ,  H04S3/00

Abstract: An audio encoding and decoding method and a related apparatus are provided. The audio encoding method may include: determining a coding mode of a current frame; when determining that the coding mode of the current frame is an anticorrelated signal coding mode, performing time-domain downmix processing on left and right channel signals in the current frame by using a time-domain downmix processing manner corresponding to the anticorrelated signal coding mode, to obtain a primary channel signal and a secondary channel signal, where the time-domain downmix processing manner corresponding to the anticorrelated signal coding mode is a time-domain downmix processing manner corresponding to an anticorrelated signal channel combination scheme, and the anticorrelated signal channel combination scheme is a channel combination scheme corresponding to a near out of phase signal; and encoding the obtained primary channel signal and secondary channel signal in the current frame.

公开(公告)号：US20210082443A1

公开(公告)日：2021-03-18

申请号：US17107004

申请日：2020-11-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Zexin Liu ,  Haiting Li

IPC: G10L19/008

Abstract: A stereo signal encoding method includes obtaining indication information of an encoding mode of a residual signal of a current frame, where the indication information includes at least one of an encoding status of a residual signal of a previous frame, a value of an updating manner flag for a long-term smooth parameter of the current frame, or a value of a status change parameter of the current frame relative to a stereo signal of the previous frame, and determining the encoding mode of the residual signal of the current frame based on the indication information of the encoding mode of the residual signal of the current frame, where the encoding mode indicates whether to encode the residual signal of the current frame.

公开(公告)号：US20200321012A1

公开(公告)日：2020-10-08

申请号：US16906792

申请日：2020-06-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Haiting Li ,  Lei Miao

IPC: G10L19/008 ,  G10L19/032

Abstract: In a stereo encoding method a channel combination encoding solution of a current frame is first obtained, and then a quantized channel combination ratio factor of the current frame and an encoding index of the quantized channel combination ratio factor are obtained based on the obtained channel combination encoding solution, so that an obtained primary channel signal and secondary channel signal of the current frame meet a characteristic of the current frame.

公开(公告)号：US20190172474A1

公开(公告)日：2019-06-06

申请号：US16272397

申请日：2019-02-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Haiting Li ,  Lei Miao

IPC: G10L19/032 ,  G10L19/022 ,  G10L19/008

Abstract: A multi-channel signal encoding method and an encoder, where the encoding method includes obtaining a multi-channel signal of a current frame, determining an initial multi-channel parameter of the current frame, determining a difference parameter based on the initial multi-channel parameter of the current frame and multi-channel parameters of previous K frames of the current frame, where the difference parameter represents a difference between the initial multi-channel parameter of the current frame and the multi-channel parameters of the previous K frames, and K is an integer greater than or equal to one, determining a multi-channel parameter of the current frame based on the difference parameter and a characteristic parameter of the current frame, and encoding the multi-channel signal based on the multi-channel parameter of the current frame. Hence, the method and the encoder ensure better accuracy of inter-channel information of a multi-channel signal.

公开(公告)号：US09973174B2

公开(公告)日：2018-05-15

申请号：US15400147

申请日：2017-01-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Yuanyuan Liu ,  Haiting Li

IPC: G06F17/10 ,  H03H21/00 ,  G06F17/16

CPC classification number: H03H21/0043 ,  G06F17/16 ,  H03H2021/0054 ,  H03H2021/0061

Abstract: A method and an apparatus for determining a stability factor of an adaptive filter is presented. The method includes: determining, according to first input signal that are input to an adaptive filter, a reference input matrix of the first input signal; determining a stability parameter of the first input signal according to the reference input matrix; and determining a stability factor of the adaptive filter according to the stability parameter. According to the method and apparatus for determining a stability factor of an adaptive filter provided in the embodiments of the present application, the stability factor of the adaptive filter can be adaptively obtained according to a stability feature of the first input signal, and the adaptive filter can reach a balance between a convergence speed and steady state error performance.

公开(公告)号：US20170075860A1

公开(公告)日：2017-03-16

申请号：US15345074

申请日：2016-11-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  Haiting Li ,  Anisse Taleb ,  Jianfeng Xu

IPC: G06F17/14

CPC classification number: G06F17/142 ,  G06F17/141 ,  G06F17/147 ,  G10L19/0212 ,  G10L19/022

Abstract: An embodiment of the present invention discloses a data processing method, including: twiddling input data, so as to obtain twiddled data; pre-rotating the twiddled data by using a symmetric rotate factor, where the rotate factor is a·W4L2p+1, p=0, . . . , L/2−1, and a is a constant; performing a Fast Fourier (Fast Fourier Transform, FFT) transform of L/2 point on the pre-rotated data, where L is the length of the input data; post-rotating the data that has undergone the FFT transform by using a symmetric rotate factor, where the rotate factor is b·W4L2q+1, q=0, . . . , L/2−1, and b is a constant; and obtaining output data.

Abstract translation: 本发明的一个实施例公开了一种数据处理方法，包括：对输入数据进行加密，以获得二进制数据; 通过使用对称的旋转因子来预先旋转二进制数据，其中旋转因子为·W4L2p + 1，p = 0。 。 。 ，L / 2-1，a为常数; 在预旋转数据上执行L / 2点的快速傅里叶（Fast Fourier Transform，FFT）变换，其中L是输入数据的长度; 通过使用旋转因数为b·W4L2q + 1，q = 0的对称旋转因子对经过FFT变换的数据进行后转。 。 。 ，L / 2-1，b为常数; 并获得输出数据。

公开(公告)号：US20160066117A1

公开(公告)日：2016-03-03

申请号：US14822476

申请日：2015-08-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Jingdong Chen ,  Haiting Li ,  Deming Zhang

IPC: H04S3/00 ,  H04R3/00 ,  H04R5/027 ,  H04W88/02 ,  H04S7/00

CPC classification number: H04S3/002 ,  H04R1/406 ,  H04R3/005 ,  H04R5/027 ,  H04R2201/401 ,  H04R2201/405 ,  H04R2203/12 ,  H04S3/02 ,  H04S7/302 ,  H04S2400/11 ,  H04S2400/15 ,  H04S2420/13 ,  H04W88/02

Abstract: A sound signal processing method and apparatus are provided that relate to the audio signal processing field. The method in the present invention includes acquiring, by a mobile terminal, sound signals from a three-dimensional sound field, where at least three microphones are disposed on the mobile terminal and one microphone is configured to receive a sound signal in at least one direction; acquiring, according to the acquired sound signals, a direction of a sound source relative to the mobile terminal; and obtaining spatial audio signals according to the direction of the sound source relative to the mobile terminal and the acquired sound signals, where the spatial audio signals are used for simulating the three-dimensional sound field. The present invention is applicable to a process of collecting and processing signals in a three-dimensional sound field surrounding a terminal.

Abstract translation: 提供了与音频信号处理领域相关的声音信号处理方法和装置。 本发明的方法包括：由移动终端获取来自三维声场的声音信号，其中在移动终端上设置有至少三个麦克风，并且一个麦克风被配置为在至少一个方向上接收声音信号 ; 根据获取的声音信号，获取声源相对于移动终端的方向; 并且根据相对于移动终端的声源的方向和获取的声音信号获得空间音频信号，其中空间音频信号用于模拟三维声场。 本发明适用于在终端周围的三维声场中采集和处理信号的处理。

公开(公告)号：US20130304784A1

公开(公告)日：2013-11-14

申请号：US13938834

申请日：2013-07-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Deming Zhang ,  Haiting Li ,  Taleb Anisse ,  Jianfeng Xu

IPC: G06F17/14

CPC classification number: G06F17/142 ,  G06F17/141 ,  G06F17/147 ,  G10L19/0212 ,  G10L19/022

Abstract: A data processing method is disclosed, including: twiddling input data, so as to obtain twiddled data; pre-rotating the twiddled data by using a symmetric rotate factor, where the rotate factor is a·W4L2p+1, p=0, . . . , L/2−1, and α is a constant; performing a Fast Fourier (Fast Fourier Transform, FFT) transform of L/2 point on the pre-rotated data, where L is the length of the input data; post-rotating the data that has undergone the FFT transform by using a symmetric rotate factor, where the rotate factor is b·W4L2q+1, q=0, . . . , L/2−1, and b is a constant; and obtaining output data.

Abstract translation: 公开了一种数据处理方法，包括：对输入数据进行加密，以获得二进制数据; 通过使用对称的旋转因子来预先旋转二进制数据，其中旋转因子为·W4L2p + 1，p = 0。 。 。 ，L / 2-1，α是常数; 在预旋转数据上执行L / 2点的快速傅里叶（Fast Fourier Transform，FFT）变换，其中L是输入数据的长度; 通过使用旋转因数为b·W4L2q + 1，q = 0的对称旋转因子对经过FFT变换的数据进行后转。 。 。 ，L / 2-1，b为常数; 并获得输出数据。