公开(公告)号：US20190096411A1

公开(公告)日：2019-03-28

申请号：US16201681

申请日：2018-11-27

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008

Abstract: An inter-channel phase difference (IPD) parameter extraction method and apparatus, where the extraction method includes obtaining a parameter obtaining an information extraction manner for a current frame of a multi-channel signal, obtaining an IPD parameter extraction manner for the current frame based on the parameter obtaining the information extraction manner, where the obtained IPD parameter extraction manner is one of at least two preset IPD parameter extraction manners, and obtaining an IPD parameter of the current frame based on the obtained IPD parameter extraction manner for the current frame.

公开(公告)号：US20170364479A1

公开(公告)日：2017-12-21

申请号：US15696091

申请日：2017-09-05

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G06F17/14 ,  G10L19/02 ,  G10L19/022

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

Abstract: A method for processing an audio signal, including: sound is converted to an analog audio input signal and converted into a digital audio signal; a windowed time domain signal is obtained and then a twiddled signal is obtained; the twiddled signal is pre-rotated and then an FFT is performed; an in-place fixed rotate compensation is performed on the FFT signal and then an post-rotated is performed; a quantized signal is obtained and then wrote into a bitstream for transmitting or storing.

公开(公告)号：US09641929B2

公开(公告)日：2017-05-02

申请号：US15049515

申请日：2016-02-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haiting Li ,  Deming Zhang

IPC: H04R3/00 ,  H04R1/40 ,  G10L21/02 ,  H04R1/02 ,  G10L21/0216 ,  G10L21/0208

CPC classification number: H04R1/406 ,  G10L21/02 ,  G10L21/0205 ,  G10L2021/02082 ,  G10L2021/02166 ,  H04R2201/025 ,  H04R2201/405 ,  H04R2430/21

Abstract: An audio signal processing method and apparatus and a differential beamforming method and apparatus to resolve a problem that an existing audio signal processing system cannot process audio signals in multiple application scenarios at the same time. The method includes determining a super-directional differential beamforming weighting coefficient, acquiring an audio input signal and determining a current application scenario and an audio output signal, acquiring, a weighting coefficient corresponding to the current application scenario, performing super-directional differential beamforming processing on the audio input signal using the acquired weighting coefficient in order to obtain a super-directional differential beamforming signal in the current application scenario, and performing processing on the formed signal to obtain a final audio signal required by the current application scenario. By using this method, a requirement that different application scenarios require different audio signal processing manners can be met.

公开(公告)号：US09519619B2

公开(公告)日：2016-12-13

申请号：US13938834

申请日：2013-07-10

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: 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 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: 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：US12230283B2

公开(公告)日：2025-02-18

申请号：US18449281

申请日：2023-08-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Haiting Li ,  Lei Miao

IPC: G10L19/008 ,  H04S1/00

Abstract: A stereo signal processing method includes performing delay estimation on a stereo signal of a current frame to determine an inter-channel time difference of the current frame, identifying a sign of the inter-channel time difference of the current frame is different from a sign of an inter-channel time difference of a previous frame of the current frame, performing delay alignment processing on the first-channel signal of the current frame based on the inter-channel time difference of the current frame, and performing delay alignment processing on the second-channel signal of the current frame based on the inter-channel time difference of the previous frame.

公开(公告)号：US20250037726A1

公开(公告)日：2025-01-30

申请号：US18917486

申请日：2024-10-16

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  H04S3/00

Abstract: A method for encoding an audio signal includes obtaining an ITD value of a current frame of an audio signal; obtaining a characteristic parameter of the current frame, wherein the characteristic parameter comprises at least one of a signal-to-noise ratio of the current frame or a peak feature of cross correlation coefficients of the current frame; determining, based on the characteristic parameter, whether to use the initial ITD value as the finalized ITD value of the current frame; and encoding the current frame based on the finalized ITD value of the current frame, wherein if the initial ITD value is determined as not used as the finalized ITD value of the current frame, the finalized ITD value of the current frame is the same as a finalized ITD value of a previous frame of the current frame.

公开(公告)号：US20240428807A1

公开(公告)日：2024-12-26

申请号：US18823108

申请日：2024-09-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Jonathan Alastair Gibbs ,  Haiting Li

IPC: G10L19/008 ,  G10L19/032 ,  G10L19/038 ,  G10L19/06 ,  G10L19/07

Abstract: An encoding method includes determining an adaptive broadening factor based on a quantized line spectral frequency (LSF) vector of a first channel of a current frame of an audio signal and an LSF vector of a second channel of the current frame, and writing the quantized LSF vector and the adaptive broadening factor into a bitstream.

公开(公告)号：US12112761B2

公开(公告)日：2024-10-08

申请号：US18451975

申请日：2023-08-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Jonathan Alastair Gibbs ,  Haiting Li

IPC: G10L19/008 ,  G10L19/038 ,  G10L19/06 ,  G10L19/032 ,  G10L19/07

CPC classification number: G10L19/008 ,  G10L19/038 ,  G10L19/06 ,  G10L19/032 ,  G10L19/07

Abstract: An encoding method includes determining an adaptive broadening factor based on a quantized line spectral frequency (LSF) vector of a first channel of a current frame of an audio signal and an LSF vector of a second channel of the current frame, and writing the quantized LSF vector and the adaptive broadening factor into a bitstream.

公开(公告)号：US12067993B2

公开(公告)日：2024-08-20

申请号：US18069573

申请日：2022-12-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: G10L19/008 ,  G10L19/032 ,  H04S3/00

CPC classification number: G10L19/008 ,  G10L19/032 ,  H04S3/008 ,  H04S2400/03 ,  H04S2420/03

Abstract: The present disclosure discloses an inter-channel phase difference parameter encoding method, where a current frame is obtained; a signal type and a previous IPD parameter encoding scheme of a previous frame are obtained; a current IPD parameter encoding scheme is obtained at least based on the signal type of the previous frame and the previous IPD parameter encoding scheme; and an IPD parameter of the current frame is processed based on the current IPD parameter encoding scheme.

公开(公告)号：US11922958B2

公开(公告)日：2024-03-05

申请号：US18065043

申请日：2022-12-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Eyal Shlomot ,  Haiting Li ,  Zexin Liu

IPC: G10L19/008 ,  G10L19/032

CPC classification number: G10L19/008 ,  G10L19/032

Abstract: Various embodiments provide a method and an apparatus for determining a weighting factor during stereo signal encoding. In those embodiments, a parameter value corresponding to the encoding mode of the to-be-encoded signal is determined based on an encoding mode of a to-be-encoded signal in a stereo signal and a correspondence between an encoding mode and a parameter value. Based on the determined parameter value and an energy spectrum of a linear prediction filter corresponding to an original line spectral frequency parameter of the to-be-encoded signal, a weighting factor for calculating a distance between the original line spectral frequency parameter and a target original line spectral frequency parameter is calculated.