公开(公告)号：US20190214025A1

公开(公告)日：2019-07-11

申请号：US16358237

申请日：2019-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Zexin Liu ,  Lei Miao

IPC: G10L19/005 ,  G10L19/16 ,  G10L19/06

CPC classification number: G10L19/005 ,  G10L19/06 ,  G10L19/167 ,  G10L19/26 ,  G10L2019/0002

Abstract: A speech/audio bitstream decoding method includes acquiring a speech/audio decoding parameter of a current speech/audio frame, where the foregoing current speech/audio frame is a redundant decoded frame or a speech/audio frame previous to the foregoing current speech/audio frame is a redundant decoded frame, performing post processing on the acquired speech/audio decoding parameter according to speech/audio parameters of X speech/audio frames, where the foregoing X speech/audio frames include M speech/audio frames previous to the foregoing current speech/audio frame and/or N speech/audio frames next to the foregoing current speech/audio frame, and recovering a speech/audio signal using the post-processed speech/audio decoding parameter of the foregoing current speech/audio frame. The technical solutions of the speech/audio bitstream decoding method help improve quality of an output speech/audio signal.

公开(公告)号：US10269357B2

公开(公告)日：2019-04-23

申请号：US15256018

申请日：2016-09-02

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Xingtao Zhang ,  Zexin Liu ,  Lei Miao

IPC: G10L19/04 ,  G10L19/005 ,  G10L19/06 ,  G10L19/16 ,  G10L19/00 ,  G10L19/26

Abstract: The present invention disclose a speech/audio bitstream decoding method including: acquiring a speech/audio decoding parameter of a current speech/audio frame, where the foregoing current speech/audio frame is a redundant decoded frame or a speech/audio frame previous to the foregoing current speech/audio frame is a redundant decoded frame; performing post processing on the acquired speech/audio decoding parameter according to speech/audio parameters of X speech/audio frames, where the foregoing X speech/audio frames include M speech/audio frames previous to the foregoing current speech/audio frame and/or N speech/audio frames next to the foregoing current speech/audio frame; and recovering a speech/audio signal by using the post-processed speech/audio decoding parameter of the foregoing current speech/audio frame. The technical solutions of the present invention help improve quality of an output speech/audio signal.

公开(公告)号：US20170372710A1

公开(公告)日：2017-12-28

申请号：US15698107

申请日：2017-09-07

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Lei Miao

IPC: G10L19/008 ,  G10L19/022

CPC classification number: G10L19/008 ,  G10L19/022

Abstract: A method for determining an inter-channel time difference (ITD) parameter includes determining a reference parameter according to a time-domain signal on a first sound channel and a time-domain signal on a second sound channel, where the reference parameter corresponds to a sequence of obtaining the time-domain signal on the first sound channel and the time-domain signal on the second sound channel, determining a search range according to the reference parameter and a limiting value (Tmax), where the Tmax is determined according to a sampling rate of the time-domain signal on the first sound channel, and performing search processing within the search range based on a frequency-domain signal on the first sound channel and a frequency-domain signal on the second sound channel to determine a first ITD parameter corresponding to the first sound channel and the second sound channel.

公开(公告)号：US20170287493A1

公开(公告)日：2017-10-05

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 ,  G10L19/087 ,  G10L19/06 ,  G10L19/083 ,  G10L19/107 ,  G10L25/06 ,  G10L25/78 ,  G10L19/02

CPC classification number: G10L19/005 ,  G10L19/0208 ,  G10L19/06 ,  G10L19/083 ,  G10L19/087 ,  G10L19/09 ,  G10L19/107 ,  G10L25/06 ,  G10L25/78 ,  G10L2019/0002 ,  G10L2019/0008 ,  G10L2019/0016 ,  G10L2025/783

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.

公开(公告)号：US12154577B2

公开(公告)日：2024-11-26

申请号：US18361028

申请日：2023-07-28

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：US20240161756A1

公开(公告)日：2024-05-16

申请号：US18419794

申请日：2024-01-23

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  G10L19/022

CPC classification number: G10L19/008 ,  G10L19/022 ,  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：US11915709B2

公开(公告)日：2024-02-27

申请号：US17842284

申请日：2022-06-16

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  G10L19/022 ,  G10L19/18 ,  G10L19/02 ,  G10L19/00 ,  G10L25/18

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：US20240029746A1

公开(公告)日：2024-01-25

申请号：US18361028

申请日：2023-07-28

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 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：US11217257B2

公开(公告)日：2022-01-04

申请号：US16818612

申请日：2020-03-13

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008 ,  H04S3/00

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：US11031020B2

公开(公告)日：2021-06-08

申请号：US16358237

申请日：2019-03-19

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Zexin Liu ,  Lei Miao

IPC: G10L19/04 ,  G10L19/005 ,  G10L19/06 ,  G10L19/16 ,  G10L19/26 ,  G10L19/00

Abstract: A speech/audio bitstream decoding method includes acquiring a speech/audio decoding parameter of a current speech/audio frame, where the foregoing current speech/audio frame is a redundant decoded frame or a speech/audio frame previous to the foregoing current speech/audio frame is a redundant decoded frame, performing post processing on the acquired speech/audio decoding parameter according to speech/audio parameters of X speech/audio frames, where the foregoing X speech/audio frames include M speech/audio frames previous to the foregoing current speech/audio frame and/or N speech/audio frames next to the foregoing current speech/audio frame, and recovering a speech/audio signal using the post-processed speech/audio decoding parameter of the foregoing current speech/audio frame. The technical solutions of the speech/audio bitstream decoding method help improve quality of an output speech/audio signal.