公开(公告)号：US20220358941A1

公开(公告)日：2022-11-10

申请号：US17864116

申请日：2022-07-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingyin XIA ,  Jiawei LI ,  Zhe WANG

IPC: G10L19/02 ,  G10L25/18

Abstract: The present disclosure discloses an audio encoding and decoding method and an audio encoder and decoder. The audio encoding method includes: obtaining a current frame of an audio signal, where the current frame includes a high frequency band signal and a low frequency band signal; obtaining a first encoding parameter based on the high frequency band signal and the low frequency band signal; obtaining a second encoding parameter of the current frame based on the high frequency band signal, where the second encoding parameter includes tone component information; and performing bitstream multiplexing on the first encoding parameter and the second encoding parameter, to obtain an encoded bitstream.

公开(公告)号：US20220343927A1

公开(公告)日：2022-10-27

申请号：US17863114

申请日：2022-07-12

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bingyin XIA ,  Jiawei LI ,  Zhe WANG

IPC: G10L19/02 ,  G10L25/18

Abstract: Disclosed is an audio coding method, including: obtaining a current frame of an audio signal, which includes a high frequency band signal and a low frequency band signal; obtaining a first encoding parameter based on the high frequency band signal and the low frequency band signal; obtaining a second encoding parameter based on the high frequency band signal, where the second encoding parameter includes tone component information of the high frequency band signal; obtaining a third encoding parameter based on the high frequency band signal, where the third encoding parameter includes sub-band envelope information of a part of a sub-band of the high frequency band signal that needs to be encoded; and performing bitstream multiplexing on the first encoding parameter, the second encoding parameter, and the third encoding parameter, to obtain an encoded bitstream.

公开(公告)号：US20240087585A1

公开(公告)日：2024-03-14

申请号：US18515612

申请日：2023-11-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bingyin XIA ,  Jiawei LI ,  Zhe WANG

IPC: G10L19/24 ,  G10L19/16 ,  G10L25/30 ,  H04N19/184 ,  H04N19/91

CPC classification number: G10L19/24 ,  G10L19/167 ,  G10L25/30 ,  H04N19/184 ,  H04N19/91 ,  G10L19/173

Abstract: This application disclose an encoding method and apparatus, a decoding method and apparatus, a device, a storage medium, and a computer program, and relate to the field of encoding and decoding technologies. In this method, a first latent variable is scaled based on a first variable scale factor, to obtain a second latent variable, and a quantity of coding bits of an entropy coding result of the second latent variable meets a preset encoding rate condition. This ensures that a quantity of coding bits of an entropy coding result of a latent variable corresponding to each frame of media data can meet the preset encoding rate condition, that is, the quantity of coding bits of the entropy coding result of the latent variable corresponding to each frame of media data can be basically consistent, instead of dynamically changing.

公开(公告)号：US20240177721A1

公开(公告)日：2024-05-30

申请号：US18423083

申请日：2024-01-25

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bingyin XIA ,  Jiawei LI ,  Zhe WANG

IPC: G10L19/022 ,  G10L25/30

CPC classification number: G10L19/022 ,  G10L25/30

Abstract: Embodiments of this application disclose an audio signal encoding and decoding method, including: obtaining, based on spectra of M blocks of a current frame of a to-be-encoded audio signal, M transient state identifiers of the M blocks, where the M blocks include a first block, and a transient state identifier of the first block indicates that the first block is a transient state block, or indicates that the first block is a non-transient state block; obtaining group information of the M blocks based on the M transient state identifiers of the M blocks; performing grouping and arranging on the spectra of the M blocks based on the group information of the M blocks, to obtain a to-be-encoded spectrum of the current frame; encoding the to-be-encoded spectrum by using an encoding neural network to obtain a spectrum encoding result; and writing the spectrum encoding result into a bitstream.

公开(公告)号：US20240105189A1

公开(公告)日：2024-03-28

申请号：US18533612

申请日：2023-12-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Jiawei LI ,  Bingyin XIA ,  Zhe WANG

IPC: G10L19/02 ,  G10L19/16 ,  G10L25/18 ,  G10L25/21

CPC classification number: G10L19/0204 ,  G10L19/167 ,  G10L25/18 ,  G10L25/21

Abstract: This application disclose an encoding method and apparatus, a decoding method and apparatus, a device, a storage medium, and a computer program, and belong to the field of encoding and decoding technologies. In embodiments of this application, a first whitened spectrum for media data is whitened to obtain a second whitened spectrum, and then encoding is performed based on the second whitened spectrum. A spectral amplitude of the second whitened spectrum in a target frequency band is greater than or equal to a spectral amplitude of the first whitened spectrum in the target frequency band. It can be learned that, in this solution, the spectral amplitude of the first whitened spectrum in the target frequency band is increased, so that a difference between statistical average energy of spectral lines for different frequencies in the obtained second whitened spectrum is small.