公开(公告)号：US12087312B2

公开(公告)日：2024-09-10

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.

公开(公告)号：US11950079B2

公开(公告)日：2024-04-02

申请号：US17689328

申请日：2022-03-08

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Haiting Li ,  Lei Miao

IPC: G06F17/00 ,  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：US11935548B2

公开(公告)日：2024-03-19

申请号：US17408116

申请日：2021-08-20

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  G10L19/022 ,  G10L19/032 ,  G10L25/03 ,  H04S3/00

CPC classification number: G10L19/008 ,  G10L19/022 ,  G10L19/032 ,  G10L25/03 ,  H04S3/00

Abstract: A multi-channel signal 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.

公开(公告)号：US20240064486A1

公开(公告)日：2024-02-22

申请号：US18498002

申请日：2023-10-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuhao Du ,  Xiangyu Li ,  Shuo Li ,  Fan Fan ,  Haiting Li

IPC: H04S7/00 ,  H04S3/00

CPC classification number: H04S7/304 ,  H04S3/008 ,  H04S7/301 ,  H04S7/40 ,  H04S2400/01 ,  H04S2400/11 ,  H04S2420/01

Abstract: A rendering method and a related device are disclosed, and may be applied to a scenario such as production of music or film and television works, or the like. The method may be performed by a rendering device, or may be performed by a component (for example, a processor, a chip, a chip system, or the like) of a rendering device. The method includes: obtaining a first single-object audio track based on a multimedia file, where the first single-object audio track corresponds to a first sound object; determining a first sound source position of the first sound object based on reference information; and performing spatial rendering on the first single-object audio track based on the first sound source position, to obtain a rendered first single-object audio track.

公开(公告)号：US11900952B2

公开(公告)日：2024-02-13

申请号：US17663913

申请日：2022-05-18

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: An audio encoding and decoding method and a related apparatus are provided. The audio encoding method includes: determining a channel combination scheme for a current frame; when the channel combination scheme for the current frame is different from a channel combination scheme for a previous frame, performing segmented time-domain downmix processing on left and right channel signals in the current frame based on the channel combination scheme for the current frame and the channel combination scheme for the previous frame, to obtain a primary channel signal and a secondary channel signal in the current frame; and encoding the obtained primary channel signal and secondary channel signal in the current frame.

公开(公告)号：US20230395084A1

公开(公告)日：2023-12-07

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

CPC classification number: G10L19/008 ,  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：US11790924B2

公开(公告)日：2023-10-17

申请号：US17983724

申请日：2022-11-09

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.

公开(公告)号：US11763825B2

公开(公告)日：2023-09-19

申请号：US17512202

申请日：2021-10-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： Eyal Shlomot ,  Haiting Li ,  Lei Miao

IPC: G10L19/008 ,  H04S1/00

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

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：US11640825B2

公开(公告)日：2023-05-02

申请号：US17355785

申请日：2021-06-23

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：US11587572B2

公开(公告)日：2023-02-21

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 ,  G10L19/22

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.