公开(公告)号：US09792257B2

公开(公告)日：2017-10-17

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 ,  G10L19/02 ,  G10L19/022

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.

公开(公告)号：US12148436B2

公开(公告)日：2024-11-19

申请号：US18362453

申请日：2023-07-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Jonathan Alastair Gibbs ,  Haiting Li

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

Abstract: A stereo signal encoding method includes performing spectrum broadening on a quantized line spectral frequency (LSF) parameter of a primary channel signal in a current frame in a stereo signal to obtain a spectrum-broadened LSF parameter of the primary channel signal, determining a prediction residual of an LSF parameter of a secondary channel signal in the current frame based on an original LSF parameter of the secondary channel signal and the spectrum-broadened LSF parameter of the primary channel signal, and performing a quantization on the prediction residual of the LSF parameter of the secondary channel signal.

公开(公告)号：US20240355343A1

公开(公告)日：2024-10-24

申请号：US18625538

申请日：2024-04-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Zexin Liu ,  Haiting Li

IPC: G10L19/02 ,  G10L19/06 ,  G10L25/51 ,  H04L65/70 ,  H04L65/75 ,  H04S1/00

CPC classification number: G10L19/0204 ,  G10L19/06 ,  G10L25/51 ,  H04L65/70 ,  H04L65/75 ,  H04S1/007 ,  H04S2400/03

Abstract: A stereo signal encoding method includes: obtaining a residual signal encoding parameter of a current frame of a stereo signal based on downmixed signal energy and residual signal energy of each of M sub-bands of the current frame, where the residual signal encoding parameter indicates whether to encode residual signals of the M sub-bands; determining whether to encode the residual signals based on the residual signal encoding parameter; and encoding the residual signals when it is determined that the residual signals need to be encoded.

公开(公告)号：US20240223982A1

公开(公告)日：2024-07-04

申请号：US18590257

申请日：2024-02-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Haiting Li ,  Lei Miao

IPC: H04S1/00 ,  H04S5/00

CPC classification number: H04S1/007 ,  H04S5/00 ,  H04S2400/03 ,  H04S2400/05

Abstract: A delay estimation method includes determining a cross-correlation coefficient of a multi-channel signal of a current frame, determining a delay track estimation value of the current frame based on buffered inter-channel time difference information of at least one past frame, determining an adaptive window function of the current frame, performing weighting on the cross-correlation coefficient based on the delay track estimation value of the current frame and the adaptive window function of the current frame, to obtain a weighted cross-correlation coefficient, and determining an inter-channel time difference of the current frame based on the weighted cross-correlation coefficient.

公开(公告)号：US20240161755A1

公开(公告)日：2024-05-16

申请号：US18417518

申请日：2024-01-19

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: An inter-channel phase difference (IPD) parameter extraction method includes obtaining a parameter for 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 for 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：US11978463B2

公开(公告)日：2024-05-07

申请号：US17886087

申请日：2022-08-11

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Zexin Liu ,  Haiting Li

IPC: G10L19/02 ,  G10L19/06 ,  G10L25/51 ,  H04L65/70 ,  H04L65/75 ,  H04S1/00

CPC classification number: G10L19/0204 ,  G10L19/06 ,  G10L25/51 ,  H04L65/70 ,  H04L65/75 ,  H04S1/007 ,  H04S2400/03

Abstract: A stereo signal encoding method includes: obtaining a residual signal encoding parameter of a current frame of a stereo signal based on downmixed signal energy and residual signal energy of each of M sub-bands of the current frame, where the residual signal encoding parameter indicates whether to encode residual signals of the M sub-bands; determining whether to encode the residual signals based on the residual signal encoding parameter; and encoding the residual signals when it is determined that the residual signals need to be encoded.

公开(公告)号：US11961526B2

公开(公告)日：2024-04-16

申请号：US17104425

申请日：2020-11-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting Li ,  Bin Wang ,  Zexin Liu

IPC: G10L19/008 ,  G10L19/02 ,  G10L19/08 ,  G10L19/00

CPC classification number: G10L19/008 ,  G10L19/0208 ,  G10L19/08 ,  G10L2019/0001

Abstract: A method and an apparatus for calculating a downmixed signal and a residual signal are provided. According to the method, if a first target frame (a current frame or a previous frame of the current frame) is a switching frame, a to-be-encoded downmixed signal and a to-be-encoded residual signal of the subband corresponding to the preset frequency band in the current frame is calculated based on a switch fade-in/fade-out factor of a second target frame, an initial downmixed signal and an initial residual signal of the preset frequency band.

公开(公告)号：US11935547B2

公开(公告)日：2024-03-19

申请号：US17400289

申请日：2021-08-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Haiting Li ,  Lei Miao

IPC: G10L19/008 ,  G10L19/22

CPC classification number: G10L19/008 ,  G10L19/22

Abstract: A non-transitory computer-readable medium is provided. The non-transitory computer-readable medium having computer instructions stored therein, which when executed by one or more processors, cause the one or more processors to perform operations. The operations comprise: determining a channel combination scheme for a current frame, where the determined channel combination scheme for the current frame is one of a plurality of channel combination schemes; and determining a coding mode of the current frame based on a channel combination scheme for a previous frame and the channel combination scheme for the current frame, where the coding mode of the current frame is one of a plurality of coding modes.

公开(公告)号：US11869517B2

公开(公告)日：2024-01-09

申请号：US17102190

申请日：2020-11-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting Li ,  Zexin Liu ,  Bin Wang

IPC: G10L19/008 ,  G10L25/18 ,  G10L25/21 ,  H04S1/00

CPC classification number: G10L19/008 ,  G10L25/18 ,  G10L25/21 ,  H04S1/007 ,  H04S2420/03

Abstract: This application discloses a downmixed signal calculation method and apparatus. The method includes: when a current frame or a previous frame of the current frame of a stereo signal is not a switching frame and a residual signal in the current frame or the previous frame does not need to be encoded, obtaining a second downmixed signal in the current frame and a downmix compensation factor of the current frame, correcting the second downmixed signal in the current frame based on the downmix compensation factor of the current frame, to obtain the first downmixed signal in the current frame and determining the first downmixed signal in the current frame as a downmixed signal in the current frame in a preset frequency band.

公开(公告)号：US20230419974A1

公开(公告)日：2023-12-28

申请号：US18461641

申请日：2023-09-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin Wang ,  Haiting Li ,  Lei Miao

IPC: G10L19/008 ,  G10L19/032

CPC classification number: 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.