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：US11568882B2

公开(公告)日：2023-01-31

申请号：US17319353

申请日：2021-05-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

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

IPC: G10L19/008 ,  G10L19/032 ,  H04S3/00

Abstract: This application discloses an IPD parameter encoding method, including: obtaining a reference parameter used to determine an IPD parameter encoding scheme of a current frame of a multi-channel signal; determining the IPD parameter encoding scheme of the current frame based on the reference parameter, where the determined IPD parameter encoding scheme of the current frame is one of at least two preset IPD parameter encoding schemes; and processing an IPD parameter of the current frame based on the determined IPD parameter encoding scheme of the current frame. The technical solutions provided in this application can improve encoding quality of the multi-channel signal.

公开(公告)号：US10388288B2

公开(公告)日：2019-08-20

申请号：US15696716

申请日：2017-09-06

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Lei Miao

IPC: G10L19/008

Abstract: A method and an apparatus for determining an inter-channel time difference parameter are provided, so that precision of a determined ITD parameter can adapt to channel quality. The method includes: determining a target search complexity from plurality of search complexities, where the plurality of search complexities are in a one-to-one correspondence with plurality of channel quality values; and performing search processing on a signal on a first sound channel and a signal on a second sound channel according to the target search complexity so as to determine a first inter-channel time difference ITD parameter corresponding to the first sound channel and the second sound channel.

公开(公告)号：US20190189134A1

公开(公告)日：2019-06-20

申请号：US16272394

申请日：2019-02-11

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  H04S3/00

CPC classification number: G10L19/008 ,  H04S3/00 ,  H04S2420/03

Abstract: A method for encoding a multi-channel signal and an encoder, where the encoding method includes obtaining a multi-channel signal of a current frame, determining an initial inter-channel time difference (ITD) value of the current frame, controlling, based on characteristic information of the multi-channel signal, a quantity of target frames that are allowed to appear continuously, where the characteristic information includes at least one of a signal-to-noise ratio of the multi-channel signal or a peak feature of cross correlation coefficients of the multi-channel signal, and an ITD value of a previous frame of the target frame is reused as an ITD value of the target frame, determining an ITD value of the current frame based on the initial ITD value and the quantity of target frames allowed to appear continuously, and encoding the multi-channel signal based on the ITD value of the current frame.

公开(公告)号：US10121484B2

公开(公告)日：2018-11-06

申请号：US15635690

申请日：2017-06-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Lei Miao

IPC: G10L19/00 ,  G10L21/00 ,  G10L19/16 ,  G10L19/005 ,  G10L19/06 ,  G10L25/93

Abstract: A method and an apparatus for decoding a speech/audio bitstream are disclosed, where the method for decoding a speech/audio bitstream includes determining whether a current frame is a normal decoding frame or a redundancy decoding frame, obtaining a decoded parameter of the current frame by means of parsing when the current frame is a normal decoding frame or a redundancy decoding frame, performing post-processing on the decoded parameter of the current frame to obtain a post-processed decoded parameter of the current frame, and using the post-processed decoded parameter of the current frame to reconstruct a speech/audio signal.

公开(公告)号：US10002615B2

公开(公告)日：2018-06-19

申请号：US14931975

申请日：2015-11-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Lei Miao

IPC: G10L19/008 ,  H04S3/00 ,  G10L19/005

CPC classification number: G10L19/008 ,  G10L19/005 ,  H04S3/008 ,  H04S2400/01 ,  H04S2420/03

Abstract: An inter-channel level difference (ICLD) processing method and apparatus are disclosed. A stereo audio signal is received, and the stereo audio signal is parsed frame by frame, to obtain an ICLD of each sub-band of each subframe of each frame of the stereo audio signal; a sum of absolute values of the ICLDs of each subframe of any frame of the stereo audio signal is calculated; and when an absolute value of a difference between the sums of the absolute values of the ICLDs of each two subframes of the any frame is less than a preset threshold, a weighted ICLD value of each sub-band of the any frame is calculated in a first weighting manner; or otherwise, a weighted ICLD value of each sub-band of the any frame is calculated in a second weighting manner.

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：US20220084531A1

公开(公告)日：2022-03-17

申请号：US17536932

申请日：2021-11-29

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  H04S3/00

Abstract: A method for encoding an audio signal includes obtaining an ITD value of a current frame of an audio signal; obtaining a characteristic parameter of the current frame, wherein the characteristic parameter comprises at least one of a signal-to-noise ratio of the current frame or a peak feature of cross correlation coefficients of the current frame; determining, based on the characteristic parameter, whether to use the initial ITD value as the finalized ITD value of the current frame; and encoding the current frame based on the finalized ITD value of the current frame, wherein if the initial ITD value is determined as not used as the finalized ITD value of the current frame, the finalized ITD value of the current frame is the same as a finalized ITD value of a previous frame of the current frame.

公开(公告)号：US11133014B2

公开(公告)日：2021-09-28

申请号：US16272397

申请日：2019-02-11

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

Abstract: A multi-channel signal encoding method and an encoder, where the 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. Hence, the method and the encoder ensure better accuracy of inter-channel information of a multi-channel signal.

公开(公告)号：US10354659B2

公开(公告)日：2019-07-16

申请号：US15472730

申请日：2017-03-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Bin Wang ,  Lei Miao

IPC: G10L19/005 ,  G10L19/02 ,  G10L19/06 ,  G10L19/083 ,  G10L19/087 ,  G10L19/107 ,  G10L25/06 ,  G10L25/78 ,  H04L12/26 ,  G10L19/00

Abstract: A frame loss compensation processing method and apparatus is presented, where the method includes, when a ith frame is a lost frame, estimating a spectrum frequency parameter, a pitch period, and a gain of the ith frame according to at least one of an inter-frame relationship between first N frames of the ith frame or an intra-frame relationship between first N frames of the ith frame. A parameter of the ith frame is determined using the signal correlation between the first N frames, the signal energy stability between the first N frames, intra-frame signal correlation of each frame, and intra-frame signal energy stability of each frame.