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公开(公告)号：US20150025897A1
公开(公告)日：2015-01-22
申请号：US14509737
申请日：2014-10-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： David Virette , Yang Gao , Wei Xiao
IPC: G10L19/00
Abstract: In accordance with an embodiment, a method of generating an encoded audio signal, the method includes estimating a time-frequency energy of an input audio signal from a time-frequency filter bank, computing a global variance of the time-frequency energy, determining a post-processing method according to the global variance, and transmitting an encoded representation of the input audio signal along with an indication of the determined post-processing method.
Abstract translation: 根据实施例，一种生成编码音频信号的方法，所述方法包括估计来自时频滤波器组的输入音频信号的时频能量，计算时频能量的全局方差，确定 根据全局方差的后处理方法，以及输出音频信号的编码表示以及所确定的后处理方法的指示。
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12.发明授权公开(公告)号：US11323854B2
公开(公告)日：2022-05-03
申请号：US16884022
申请日：2020-05-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Abstract: Various embodiment provide a multi-terminal cooperative working method, a terminal device, and a multi-terminal cooperative system. In those embodiments, a primary device can send networking information to a plurality of secondary devices, and the primary device has a permission to manage the cooperative network. The primary device can receive networking confirmation information sent by the plurality of secondary devices; and send configuration information to the plurality of secondary devices separately. The configuration information can be used to instruct to switch, based on a preset management permission switching mechanism when the primary device becomes abnormal or the primary device exits from the cooperative network, the permission to manage the cooperative network. The primary device can clear the secondary device from the cooperative network the secondary device becomes abnormal. In this way, robustness of the cooperative network can be improved.
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公开(公告)号：US10284712B2
公开(公告)日：2019-05-07
申请号：US15248079
申请日：2016-08-26
Applicant: Huawei Technologies Co., Ltd.
Inventor： Fuzheng Yang , Xuemin Li , Liangliang Jiang , Wei Xiao
IPC: H04M3/22 , H04M7/00 , H04L12/26 , G10L25/69 , G10L19/005
Abstract: A voice quality evaluation method, apparatus, and system comprises an obtained voice data packet is parsed, and a frame content characteristic of the data packet is determined according to a parse result, for example, the frame content characteristic is a silence frame and a voice frame. Then, a voice sequence is divided into statements according to the determined frame content characteristic, and the statements are divided into multiple frame loss events; after non-voice parameters are extracted according to the frame loss events, voice quality of each statement is evaluated according to a preset voice quality evaluation model and according to the non-voice parameters. Finally, voice quality of the entire voice sequence is evaluated according to the voice quality of each statement. By using this solution, prediction precision can be improved significantly, and accuracy of an evaluation result can be improved.
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公开(公告)号：US20170133040A1
公开(公告)日：2017-05-11
申请号：US15415335
申请日：2017-01-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Xiao
CPC classification number: G10L25/60 , G10L21/0205 , G10L25/06 , G10L25/21 , G10L25/90
Abstract: An abnormal frame detection method and apparatus are disclosed. In an embodiment the method includes obtaining a signal frame from a speech signal, and dividing the signal frame into at least two subframes; obtaining a local energy value of a subframe of the signal frame; obtaining, according to the local energy value of the subframe, a first characteristic value used to indicate a local energy trend of the signal frame; performing singularity analysis on the signal frame to obtain a second characteristic value; and determining the signal frame as an abnormal frame if the first characteristic value meets a first threshold and the second characteristic value meets a second threshold. It is implemented whether distortion occurs in a speech signal is detected.
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公开(公告)号：US20150213798A1
公开(公告)日：2015-07-30
申请号：US14683449
申请日：2015-04-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Xiao
Abstract: A method for evaluating voice quality includes performing human auditory modeling processing on a voice signal to obtain a first signal; performing variable resolution time-frequency analysis on the first signal to obtain a second signal; and performing, based on the second signal, feature extraction and analysis to obtain a voice quality evaluation result of the voice signal. According to the foregoing technical solutions, a problem that accuracy of a voice quality evaluation is not high can be solved. A voice quality evaluation result with relatively high accuracy is finally obtained by performing human auditory modeling processing, then converting a to-be-detected signal into a multi-resolution signal, further analyzing the time-frequency signal of variable resolution, extracting a feature corresponding to the signal, and performing further analysis.
Abstract translation: 用于评估语音质量的方法包括对语音信号执行人类听觉建模处理以获得第一信号; 对所述第一信号执行可变分辨率时频分析以获得第二信号; 并且基于第二信号执行特征提取和分析，以获得语音信号的语音质量评估结果。 根据上述技术方案，可以解决语音质量评价的准确性不高的问题。 通过执行人类听觉建模处理，然后将待检测信号转换为多分辨率信号，进一步分析可变分辨率的时间频率信号，提取相应的特征，最终获得具有相对较高精度的语音质量评估结果 信号，并进行进一步分析。
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Patent Agency Ranking
公开(公告)号：US10026418B2
公开(公告)日：2018-07-17
申请号：US15415335
申请日：2017-01-25
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Xiao
Abstract: An abnormal frame detection method and apparatus are disclosed. In an embodiment the method includes obtaining a signal frame from a speech signal, and dividing the signal frame into at least two subframes; obtaining a local energy value of a subframe of the signal frame; obtaining, according to the local energy value of the subframe, a first characteristic value used to indicate a local energy trend of the signal frame; performing singularity analysis on the signal frame to obtain a second characteristic value; and determining the signal frame as an abnormal frame if the first characteristic value meets a first threshold and the second characteristic value meets a second threshold. It is implemented whether distortion occurs in a speech signal is detected.
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公开(公告)号：US20130124216A1
公开(公告)日：2013-05-16
申请号：US13738786
申请日：2013-01-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chen Hu , Zexin Liu , Lei Miao , Longyin Chen , Qing Zhang , Wei Xiao , Marcel Taddei Herve
IPC: G10L21/00
Abstract: A method, device, and system for signal encoding and decoding are disclosed. The method includes: encoding a core layer signal to obtain a core layer signal code; selecting an enhancement sample point that requires enhancement layer signal encoding according to the core layer signal code and the number of bits that can be used by an enhancement layer; obtaining an enhancement layer signal code of the enhancement sample point; and outputting a bit stream, where the bit stream includes the core layer signal code and the enhancement layer signal code. According to the number of bits that can be used by the enhancement layer, the enhancement sample point that requires enhancement layer signal encoding is selected; the enhancement layer signal of the selected enhancement sample point is encoded and decoded; when no sufficient bits are available for the enhancement layer, the enhancement quality of the core layer can be improved.
Abstract translation: 公开了用于信号编码和解码的方法，装置和系统。 该方法包括：编码核心层信号以获得核心层信号码; 选择需要根据核心层信号码的增强层信号编码和增强层可以使用的位数的增强采样点; 获得增强采样点的增强层信号码; 并输出比特流，其中比特流包括核心层信号码和增强层信号码。 根据增强层可以使用的比特数，选择需要增强层信号编码的增强采样点; 所选择的增强采样点的增强层信号被编码和解码; 当没有足够的比特可用于增强层时，可以提高核心层的增强质量。
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公开(公告)号：US10049674B2
公开(公告)日：2018-08-14
申请号：US14683449
申请日：2015-04-10
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wei Xiao
Abstract: A method for evaluating voice quality includes performing human auditory modeling processing on a voice signal to obtain a first signal; performing variable resolution time-frequency analysis on the first signal to obtain a second signal; and performing, based on the second signal, feature extraction and analysis to obtain a voice quality evaluation result of the voice signal. According to the foregoing technical solutions, a problem that accuracy of a voice quality evaluation is not high can be solved. A voice quality evaluation result with relatively high accuracy is finally obtained by performing human auditory modeling processing, then converting a to-be-detected signal into a multi-resolution signal, further analyzing the time-frequency signal of variable resolution, extracting a feature corresponding to the signal, and performing further analysis.
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公开(公告)号：US20170353894A1
公开(公告)日：2017-12-07
申请号：US15585390
申请日：2017-05-03
Applicant: HUAWEI TECHNOLOGIES CO.,LTD.
CPC classification number: H04W36/0022 , H04W8/26 , H04W36/14 , H04W68/00 , H04W72/042 , H04W76/10
Abstract: A method for voice call fallback to a circuit switched (CS) domain disclosed in the present invention includes: receiving a Service Request message from a calling user equipment (UE), where the Service Request message includes called number information of a voice call in a CS domain, instructing an evolved NodeB (eNB) to initiate circuit switched fallback (CSFB) handover; receiving a Handover Request message from the eNB, where the Handover Request message includes information required for CS handover, selecting a mobile switching center (MSC) and sending a packet switched (PS) to CS Handover Request message to the MSC, where the PS to CS Handover Request message carries information required for the CS handover and a called number so that the MSC calls a called UE. The corresponding apparatuses and systems are also disclosed. The technical solution of the present invention can reduce the connection delay.
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公开(公告)号：US09646616B2
公开(公告)日：2017-05-09
申请号：US14509737
申请日：2014-10-08
Applicant: Huawei Technologies Co., Ltd.
Inventor： David Virette , Yang Gao , Wei Xiao
Abstract: In accordance with an embodiment, a method of generating an encoded audio signal, the method includes estimating a time-frequency energy of an input audio signal from a time-frequency filter bank, computing a global variance of the time-frequency energy, determining a post-processing method according to the global variance, and transmitting an encoded representation of the input audio signal along with an indication of the determined post-processing method.
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