公开(公告)号：US20200211575A1

公开(公告)日：2020-07-02

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：US20190096411A1

公开(公告)日：2019-03-28

申请号：US16201681

申请日：2018-11-27

Applicant: Huawei Technologies Co., Ltd.

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

IPC: G10L19/008

Abstract: An inter-channel phase difference (IPD) parameter extraction method and apparatus, where the extraction method includes obtaining a parameter 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 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：US10008211B2

公开(公告)日：2018-06-26

申请号：US15154655

申请日：2016-05-13

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xingtao Zhang ,  Lei Miao ,  Wenhai Wu

IPC: H04B15/00 ,  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.

公开(公告)号：US20170301361A1

公开(公告)日：2017-10-19

申请号：US15635690

申请日：2017-06-28

Applicant: HUAWEI TECHNOLOGIES CO.,LTD.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Lei Miao

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

CPC classification number: G10L19/167 ,  G10L19/005 ,  G10L19/06 ,  G10L25/93 ,  G10L2019/0002 ,  G10L2025/932

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：US09734836B2

公开(公告)日：2017-08-15

申请号：US15197364

申请日：2016-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Lei Miao

IPC: G10L19/00 ,  G10L21/00 ,  G10L13/00 ,  G10L19/16 ,  G10L19/005 ,  G10L19/06 ,  G10L25/93

CPC classification number: G10L19/167 ,  G10L19/005 ,  G10L19/06 ,  G10L25/93 ,  G10L2019/0002 ,  G10L2025/932

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：US20160343382A1

公开(公告)日：2016-11-24

申请号：US15197364

申请日：2016-06-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Zexin Liu ,  Xingtao Zhang ,  Lei Miao

IPC: G10L19/16 ,  G10L19/06

CPC classification number: G10L19/167 ,  G10L19/005 ,  G10L19/06 ,  G10L25/93 ,  G10L2019/0002 ,  G10L2025/932

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.

Abstract translation: 公开了一种用于解码语音/音频比特流的方法和装置，其中用于解码语音/音频比特流的方法包括确定当前帧是正常解码帧还是冗余解码帧，获得当前帧的解码参数 通过当前帧是正常解码帧或冗余解码帧进行解析，对当前帧的解码参数执行后处理以获得当前帧的后处理解码参数，并且使用后处理 解码当前帧的参数以重构语音/音频信号。

公开(公告)号：US20160055856A1

公开(公告)日：2016-02-25

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

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.

Abstract translation: 公开了信道间差分（ICLD）处理方法和装置。 接收立体声音频信号，并逐帧解析立体声音频信号，以获得立体声音频信号的每帧的每个子帧的每个子带的ICLD; 计算立体声音频信号的任何帧的每个子帧的ICLD的绝对值之和; 并且当任何帧的每两个子帧的ICLD的绝对值的和之间的差的绝对值小于预设阈值时，任何帧的每个子带的加权ICLD值被计算为 第一加权方式; 否则，以第二加权方式计算任何帧的每个子带的加权ICLD值。