公开(公告)号：US20130117029A1

公开(公告)日：2013-05-09

申请号：US13728201

申请日：2012-12-27

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin LIU ,  Lei MIAO ,  Anisse TALEB

IPC: G10L19/008

CPC classification number: G10L19/265 ,  G10L19/008 ,  G10L19/0204 ,  G10L19/20 ,  G10L21/0388

Abstract: Embodiments of the present invention provide a signal classification method and device, and encoding and decoding methods and devices. The encoding method includes: dividing a current frame into a low-frequency band signal and a high-frequency band signal; attenuating the high-frequency band signal or a to-be-encoded characteristic parameter of the high-frequency band signal according to an energy attenuation value of the low-frequency band signal, where the energy attenuation value indicates energy attenuation of the low-frequency band signal caused by encoding of the low-frequency band signal; and encoding the attenuated high-frequency band signal or the attenuated to-be-encoded characteristic parameter of the high-frequency band signal. The technical solutions according to the embodiments of the present invention can improve the effect of combining the low-frequency band signal and the high-frequency band signal at the decoder.

Abstract translation: 本发明的实施例提供信号分类方法和装置，以及编码和解码方法和装置。 该编码方法包括：将当前帧划分成低频带信号和高频带信号; 根据低频带信号的能量衰减值对高频带信号的高频带信号或待编码的特征参数进行衰减，其中能量衰减值表示低频带信号的能量衰减 由低频带信号的编码引起的频带信号; 对衰减的高频带信号或衰减的待编码的高频信号的特征参数进行编码。 根据本发明的实施例的技术方案可以改善在解码器处组合低频带信号和高频带信号的效果。

公开(公告)号：US20240404532A1

公开(公告)日：2024-12-05

申请号：US18795583

申请日：2024-08-06

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：US20240282318A1

公开(公告)日：2024-08-22

申请号：US18440210

申请日：2024-02-13

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 method for determining an audio coding mode and a related apparatus are provided. The method may include: 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. The technical solutions provided in embodiments of this application help improve encoding quality.

公开(公告)号：US20230352033A1

公开(公告)日：2023-11-02

申请号：US18339062

申请日：2023-06-21

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting LI ,  Bin WANG ,  Lei MIAO

IPC: G10L19/008 ,  G10L19/22

CPC classification number: G10L19/008 ,  G10L19/22

Abstract: A time-domain stereo parameter encoding method and a related product are provided. The time-domain stereo parameter encoding method includes: determining a channel combination scheme for a current frame; determining a time-domain stereo parameter of the current frame based on the channel combination scheme for the current frame; and encoding the determined time-domain stereo parameter of the current frame, where the time-domain stereo parameter includes at least one of a channel combination ratio factor or an inter-channel time difference.

公开(公告)号：US20230306972A1

公开(公告)日：2023-09-28

申请号：US18193922

申请日：2023-03-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Haiting LI ,  Bin WANG ,  Lei MIAO

IPC: G10L19/008 ,  G10L19/20 ,  G10L19/22

CPC classification number: G10L19/008 ,  G10L19/20 ,  G10L19/22 ,  H04S1/007

Abstract: An audio encoding and decoding method and 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, the method further includes 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 corresponds 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. The method may also include encoding the obtained primary channel signal and secondary channel signal in the current frame.

公开(公告)号：US20230131892A1

公开(公告)日：2023-04-27

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

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：US20200175999A1

公开(公告)日：2020-06-04

申请号：US16784759

申请日：2020-02-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Bin WANG ,  Haiting LI ,  Lei MIAO

IPC: 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：US20200175998A1

公开(公告)日：2020-06-04

申请号：US16784539

申请日：2020-02-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting LI ,  Bin WANG ,  Lei MIAO

IPC: G10L19/008 ,  G10L19/22

Abstract: The present disclosure relates to time-domain stereo parameter encoding methods and apparatus. One example time-domain stereo parameter encoding method includes determining a channel combination scheme for a current frame, determining a time-domain stereo parameter of the current frame based on the channel combination scheme for the current frame, and encoding the determined time-domain stereo parameter of the current frame, where the time-domain stereo parameter includes at least one of a channel combination ratio factor or an inter-channel time difference.

公开(公告)号：US20190318747A1

公开(公告)日：2019-10-17

申请号：US16457165

申请日：2019-06-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zexin LIU ,  Lei MIAO

IPC: G10L19/00 ,  G10L19/083

Abstract: The present invention discloses a speech/audio signal processing method and apparatus. In an embodiment, the speech/audio signal processing method includes: when a speech/audio signal switches bandwidth, obtaining an initial high frequency signal corresponding to a current frame of speech/audio signal; obtaining a time-domain global gain parameter of the initial high frequency signal; performing weighting processing on an energy ratio and the time-domain global gain parameter, and using an obtained weighted value as a predicted global gain parameter, where the energy ratio is a ratio between energy of a historical frame of high frequency time-domain signal and energy of a current frame of initial high frequency signal; correcting the initial high frequency signal by using the predicted global gain parameter, to obtain a corrected high frequency time-domain signal; and synthesizing a current frame of narrow frequency time-domain signal and the corrected high frequency time-domain signal and outputting the synthesized signal.

公开(公告)号：US20160254002A1

公开(公告)日：2016-09-01

申请号：US15154655

申请日：2016-05-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao ZHANG ,  Lei MIAO ,  Wenhai WU

IPC: G10L19/008

CPC classification number: G10L19/008

Abstract: Present disclosure discloses a method and an apparatus for encoding a stereo phase parameter, which relate to the field of information technologies and can improve an effect of stereo audio phase information. The method includes: first, acquiring a global stereo phase parameter of a current frame; then, determining a value of the global stereo phase parameter of the current frame, and adjusting the value of the global stereo phase parameter of the current frame according to a determining result of the value of the global stereo phase parameter of the current frame; and finally, encoding an adjusted value of the global stereo phase parameter of the current frame. The embodiments of the present disclosure are applicable to recovering stereo phase information.

Abstract translation: 本公开公开了一种用于对立体声相位参数进行编码的方法和装置，其涉及信息技术领域并且可以改善立体声音频相位信息的效果。 该方法包括：首先获取当前帧的全局立体相参数; 然后，确定当前帧的全局立体相参数的值，并根据当前帧的全局立体相位参数的值的确定结果调整当前帧的全局立体相参数的值; 并且最后，对当前帧的全局立体相参数的调整值进行编码。 本公开的实施例适用于恢复立体声相位信息。