公开(公告)号：US20240249731A1

公开(公告)日：2024-07-25

申请号：US18603770

申请日：2024-03-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting LI ,  Bin WANG ,  Zexin LIU

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

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

Abstract: An audio signal encoding method is provided. According to the method, if a 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 are obtained based on a switch fade-in/fade-out factor of a previous frame, an initial downmixed signal and an initial residual signal of the preset frequency band of the current frame.

公开(公告)号：US20230352034A1

公开(公告)日：2023-11-02

申请号：US18350969

申请日：2023-07-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Eyal SHLOMOT ,  Haiting LI ,  Bin WANG

IPC: G10L19/20 ,  G10L19/24 ,  H04S3/00 ,  G10L19/008

CPC classification number: G10L19/008 ,  G10L19/20 ,  G10L19/24 ,  H04S3/008 ,  H04S2420/03

Abstract: This disclosure provides a encoding method, and an encoder for a multi-channel signal. The encoding method includes: obtaining a first ITD of a current frame of a multi-channel signal includes an initial left channel signal and an initial right channel signal; obtaining a second ITD of the current frame based on the first ITD and a third ITD of a previous frame of the multi-channel signal; performing delay alignment on the initial left channel signal and the initial right channel signal based on the second ITD, to obtain an aligned left channel signal and an aligned right channel signal; and encoding the aligned left channel signal and the aligned right channel signal.

公开(公告)号：US20230154472A1

公开(公告)日：2023-05-18

申请号：US18154451

申请日：2023-01-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhi WANG ,  Jiance DING ,  Bin WANG ,  Haiting LI ,  Zhe WANG

IPC: G10L19/008 ,  G10L25/21 ,  G10L19/002

CPC classification number: G10L19/008 ,  G10L25/21 ,  G10L19/002

Abstract: Disclosed are a multi-channel audio signal encoding method and apparatus. Audio signals of P channels in a current frame of a multi-channel audio signal can be obtained, where the audio signals of the P channels include audio signals of K channel pairs; respective bit quantities of the K channel pairs are determined based on the respective energy/amplitudes of the audio signals of the P channels and a quantity of available bits; and the audio signals of the P channels are encoded based on the respective bit quantities of the K channel pairs to obtain an encoded bitstream, to improve encoding quality.

公开(公告)号：US20200176001A1

公开(公告)日：2020-06-04

申请号：US16785274

申请日：2020-02-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Bin WANG ,  Haiting LI ,  Lei MIAO

IPC: 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：US20200176000A1

公开(公告)日：2020-06-04

申请号：US16785174

申请日：2020-02-07

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Haiting LI ,  Bin WANG ,  Lei MIAO

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

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：US20230119826A1

公开(公告)日：2023-04-20

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

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.

公开(公告)号：US20220139404A1

公开(公告)日：2022-05-05

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

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：US20220108710A1

公开(公告)日：2022-04-07

申请号：US17555083

申请日：2021-12-17

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Eyal SHLOMOT ,  Haiting LI ,  Bin WANG

IPC: G10L19/008 ,  G10L19/20 ,  G10L19/24 ,  H04S3/00

Abstract: This disclosure provides a decoding method, and a decoding apparatus for a stereo signal. The decoding method includes: decoding a bitstream to obtain a first channel signal, a second channel signal, and a first ITD of a current frame of a stereo signal; performing a mixing processing on the first channel signal and the second channel signal, to obtain a third channel reconstructed signal and a fourth channel reconstructed signal; performing interpolation processing based on the first ITD and a second ITD of a previous frame previous to the current frame, to obtain a third ITD; and adjusting a delay of the third channel reconstructed signal and the fourth channel reconstructed signal based on the third ITD.

公开(公告)号：US20210118456A1

公开(公告)日：2021-04-22

申请号：US17136028

申请日：2020-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Eyal SHLOMOT ,  Haiting LI ,  Zexin LIU

IPC: 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 determining 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 is a weighting factor for calculating a distance between the original line spectral frequency parameter and a target original line spectral frequency parameter is calculated.

公开(公告)号：US20250006209A1

公开(公告)日：2025-01-02

申请号：US18884337

申请日：2024-09-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhi WANG ,  Zhe WANG ,  Haiting LI

IPC: G10L19/008 ,  G10L19/002

Abstract: This application disclose a multi-channel signal encoding method, a multi-channel signal decoding method, and a terminal device for processing multi-channel signal. The multi-channel signal encoding method includes: obtaining silent flag information of a multi-channel signal, where the silent flag information includes a silent enable flag and/or a silent flag; and performing multi-channel encoding processing on the multi-channel signal to obtain a transmission channel signal of each transmission channel; and generating a bitstream based on the transmission channel signal of each transmission channel and the silent flag information, where the bitstream includes the silent flag information and a multi-channel encoding result of the transmission channel signal. In this application, the transmission channel signal of each transmission channel is encoded based on the silent flag information to generate the bitstream, and a silent status of the multi-channel signal is considered, so that encoding efficiency and encoding bit resource utilization are improved.