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11. 发明申请

WO2010028292A1 ADAPTIVE FREQUENCY PREDICTION 审中-公开
标题翻译：自适应频率预测
公开(公告)号：WO2010028292A1
公开(公告)日：2010-03-11
申请号：PCT/US2009/056106
申请日：2009-09-04
申请人： HUAWEI TECHNOLOGIES CO., LTD. , GAO, Yang
发明人： GAO, Yang
IPC分类号： G10L19/12
CPC分类号： G10L21/038 , G10L19/24
摘要： In one embodiment, a method of transceiving an audio signal (32, 34) is disclosed. The method includes providing low band spectral information having a plurality of spectrum coefficients and predicting a high band extended spectral fine structure (802) from the low band spectral information (801) for at least one subband, where the high band extended spectral fine structure (802) are made of a plurality of spectrum coefficients. The predicting includes preparing the spectrum coefficients of the low band spectral information (801), defining prediction parameters for the high band extended spectral fine structure (802) and index ranges of the prediction parameters, and determining possible best indices of the prediction parameters, where determining includes minimizing a prediction error between a reference subband in high band and a predicted subband that is selected and composed from an available low band. The possible best indices of the prediction parameters are transmitted.
摘要翻译：在一个实施例中，公开了收发音频信号（32,34）的方法。该方法包括：提供具有多个频谱系数的低频带频谱信息，并从低频带频谱信息（801）预测至少一个子频带的高频带扩展频谱精细结构（802），其中高频带扩展频谱精细结构 802）由多个频谱系数组成。预测包括准备低频谱信息（801）的频谱系数，定义高频段扩展频谱精细结构（802）的预测参数和预测参数的索引范围，以及确定预测参数的可能的最佳索引，其中确定包括最小化高频带中的参考子带和从可用的低频带选择并构成的预测子频带之间的预测误差。传输预测参数的最佳索引。

12. 发明申请

WO2020146867A1 HIGH RESOLUTION AUDIO CODING 审中-公开
公开(公告)号：WO2020146867A1
公开(公告)日：2020-07-16
申请号：PCT/US2020/013295
申请日：2020-01-13
申请人： GAO, Yang , HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L21/00
摘要： Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing audio coding are described. One example of the methods includes receiving an audio signal that includes one or more subband signals. A residual signal of at least one of the one or more subband signals is generated based on the at least one of the one or more subband signals. It is determined that the at least one of the one or more subband signals is a high pitch signal. In response to determining that the at least one of the one or more subband signals is a high pitch signal, weighting is performed on the residual signal of the at least one of the one or more subband signal to generate a weighted residual signal.

13. 发明申请

WO2013096900A1 VERY SHORT PITCH DETECTION AND CODING 审中-公开
标题翻译：非常短暂的检测和编码
公开(公告)号：WO2013096900A1
公开(公告)日：2013-06-27
申请号：PCT/US2012/071475
申请日：2012-12-21
申请人： HUAWEI TECHNOLOGIES CO., LTD. , GAO, Yang , QI, Fengyan
发明人： GAO, Yang , QI, Fengyan
IPC分类号： G10L13/00
CPC分类号： G10L21/003 , G10L19/00 , G10L19/09 , G10L25/06 , G10L25/21 , G10L25/90
摘要： System and method embodiments are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation that is smaller than the conventional minimum pitch limitation.
摘要翻译：提供了用于语音或音频信号的非常短的音调检测和编码的系统和方法实施例。该系统和方法包括使用时域和频域音调检测技术的组合来检测语音或音频信号中是否存在比常规最小音调限制短的音调滞后。音调检测技术包括在时域中使用音调相关性，并检测频域中的语音或音频信号中缺少低频能量。检测到的非常短的音调滞后使用小于传统的最小间距限制的预定的最小非常短的间距限制的音调范围进行编码。

14. 发明公开

EP2795613A1 VERY SHORT PITCH DETECTION AND CODING 有权转让
标题翻译：识别和编码很短的俯仰姿态
公开(公告)号：EP2795613A1
公开(公告)日：2014-10-29
申请号：EP12860799.1
申请日：2012-12-21
申请人： Huawei Technologies Co., Ltd , Gao, Yang
发明人： GAO, Yang
IPC分类号： G10L13/00
CPC分类号： G10L21/003 , G10L19/00 , G10L19/09 , G10L25/06 , G10L25/21 , G10L25/90
摘要： System and method embodiments are provided for very short pitch detection and coding for speech or audio signals. The system and method include detecting whether there is a very short pitch lag in a speech or audio signal that is shorter than a conventional minimum pitch limitation using a combination of time domain and frequency domain pitch detection techniques. The pitch detection techniques include using pitch correlations in time domain and detecting a lack of low frequency energy in the speech or audio signal in frequency domain. The detected very short pitch lag is coded using a pitch range from a predetermined minimum very short pitch limitation that is smaller than the conventional minimum pitch limitation.

15. 发明申请

WO2014131260A1 SYSTEM AND METHOD FOR POST EXCITATION ENHANCEMENT FOR LOW BIT RATE SPEECH CODING 审中-公开
标题翻译：用于低比特率语音编码的激活增强的系统和方法
公开(公告)号：WO2014131260A1
公开(公告)日：2014-09-04
申请号：PCT/CN2013/080254
申请日：2013-07-27
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L19/04
CPC分类号： G10L19/04 , G10L19/12 , G10L19/26
摘要： In accordance with an embodiment, a method of decoding an audio/speech signal includes decoding an excitation signal based on an incoming audio/speech information, determining a stability of a high frequency portion of the excitation signal, smoothing an energy of the high frequency portion of the excitation signal based on the stability of the high frequency portion of the excitation signal, and producing an audio signal based on smoothing the high frequency portion of the excitation signal.
摘要翻译：根据实施例，对音频/语音信号进行解码的方法包括基于输入音频/语音信息来解码激励信号，确定激励信号的高频部分的稳定性，平滑高频部分的能量基于激励信号的高频部分的稳定性的激励信号，并且基于使激励信号的高频部分平滑来产生音频信号。

16. 发明申请

WO2016015591A1 IMPROVING CLASSIFICATION BETWEEN TIME-DOMAIN CODING AND FREQUENCY DOMAIN CODING 审中-公开
标题翻译：改进时域编码和频域编码之间的分类
公开(公告)号：WO2016015591A1
公开(公告)日：2016-02-04
申请号：PCT/CN2015/084931
申请日：2015-07-23
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L19/20
CPC分类号： G10L19/125 , G10L19/002 , G10L19/22 , G10L2019/0002 , G10L2019/0011 , G10L2019/0016
摘要： A method for processing speech signals prior to encoding a digital signal comprising audio data includes selecting frequency domain coding or time domain coding based on a coding bit rate to be used for coding the digital signal and a short pitch lag detection of the digital signal.
摘要翻译：在对包括音频数据的数字信号进行编码之前处理语音信号的方法包括基于用于对数字信号进行编码的编码比特率和数字信号的短音调滞后检测来选择频域编码或时域编码。

17. 发明申请

WO2015032351A1 UNVOICED/VOICED DECISION FOR SPEECH PROCESSING 审中-公开
标题翻译：无声/有声的语音处理决定
公开(公告)号：WO2015032351A1
公开(公告)日：2015-03-12
申请号：PCT/CN2014/086058
申请日：2014-09-05
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L25/03
CPC分类号： G10L25/78 , G10L19/22 , G10L25/93
摘要： In accordance with an embodiment of the present invention, a method for speech processing includes determining an unvoicing/voicing parameter reflecting a characteristic of unvoiced/voicing speech in a current frame of a speech signal comprising a plurality of frames. A smoothed unvoicing/voicing parameter is determined to include information of the unvoicing/voicing parameter in a frame prior to the current frame of the speech signal. A difference between the unvoicing/voicing parameter and the smoothed unvoicing/voicing parameter is computed. The method further includes generating an unvoiced/voiced decision point for determining whether the current frame comprises unvoiced speech or voiced speech using the computed difference as a decision parameter.
摘要翻译：根据本发明的实施例，一种用于语音处理的方法包括：确定反映在包括多个帧的语音信号的当前帧中的清音/发声语音的特征的清音/发声参数。平滑的清音/发声参数被确定为包括语音信号的当前帧之前的帧中的清音/发声参数的信息。计算出浊音/浊音参数与平滑的浊音/浊音参数之间的差异。该方法还包括生成清音/有声决定点，用于使用所计算的差分作为判定参数来确定当前帧是否包括无声语音或浊音。

18. 发明申请

WO2014124577A1 SYSTEM AND METHOD FOR MIXED CODEBOOK EXCITATION FOR SPEECH CODING 审中-公开
标题翻译：用于语音编码的混合编码激活的系统和方法
公开(公告)号：WO2014124577A1
公开(公告)日：2014-08-21
申请号：PCT/CN2013/080268
申请日：2013-07-29
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L19/00
CPC分类号： G10L19/00 , G10L19/12
摘要： In accordance with an embodiment, a method of encoding an audio/speech signal includes determining a mixed codebook vector based on an incoming audio/speech signal, where the mixed codebook vector includes a sum of a first codebook entry from a first codebook and a second codebook entry from a second codebook. The method further includes generating an encoded audio signal based on the determined mixed codebook vector, and transmitting a coded excitation index of the determined mixed codebook vector.
摘要翻译：根据实施例，对音频/语音信号进行编码的方法包括基于输入音频/语音信号来确定混合码本矢量，其中混合码本矢量包括来自第一码本的第一码本条目和第二码本矢量的和第二码本的码本条目。该方法还包括基于所确定的混合码本矢量生成编码音频信号，并发送所确定的混合码本矢量的编码的激励索引。

19. 发明申请

WO2015035896A1 ADAPTIVE BANDWIDTH EXTENSION AND APPARATUS FOR THE SAME 审中-公开
标题翻译：自适应带宽扩展及其设备
公开(公告)号：WO2015035896A1
公开(公告)日：2015-03-19
申请号：PCT/CN2014/086135
申请日：2014-09-09
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L19/032
CPC分类号： G10L19/22 , G10L19/0204 , G10L19/08 , G10L19/12 , G10L19/167 , G10L19/265 , G10L21/038
摘要： In one embodiment of the present invention, a method of decoding an encoded audio bitstream and generating frequency bandwidth extension includes decoding the audio bitstream to produce a decoded low band audio signal and generate a low band excitation spectrum corresponding to a low frequency band. A sub-band area is selected from within the low frequency band using a parameter which indicates energy information of a spectral envelope of the decoded low band audio signal. A high band excitation spectrum is generated for a high frequency band by copying a sub-band excitation spectrum from the selected sub-band area to a high sub-band area corresponding to the high frequency band. Using the generated high band excitation spectrum, an extended high band audio signal is generated by applying a high band spectral envelope. The extended high band audio signal is added to the decoded low band audio signal to generate an audio output signal having an extended frequency bandwidth.
摘要翻译：在本发明的一个实施例中，解码编码音频比特流并产生频率带宽扩展的方法包括对音频比特流进行解码以产生解码的低频带音频信号并产生对应于低频带的低频激励频谱。使用指示解码的低频带音频信号的频谱包络的能量信息的参数从低频带内选择子带区域。通过将子带激励频谱从所选择的子带区域复制到对应于高频带的高子带区域，为高频带生成高频带激励频谱。使用所产生的高频带激励频谱，通过应用高频带频谱包络来产生扩展的高频带音频信号。将扩展的高频带音频信号添加到解码的低频带音频信号以产生具有扩展的频率带宽的音频输出信号。

20. 发明申请

WO2015021938A3 ADAPTIVE HIGH-PASS POST-FILTER 审中-公开
公开(公告)号：WO2015021938A3
公开(公告)日：2015-02-19
申请号：PCT/CN2014/084468
申请日：2014-08-15
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： GAO, Yang
IPC分类号： G10L19/26
摘要： A method of speech processing includes receiving a coded audio signal having coding noise. The method further includes generating a decoded audio signal from the code audio signal, and determining a pitch corresponding to the fundamental frequency of the audio signal. The method also includes determining the minimum allowable pitch and determining if the pitch of the audio signal is less than the minimum allowable pitch. If the pitch of the audio signal is less than the minimum allowable pitch, applying an adaptive high pass filter on the decoded audio signal to lower the coding noise at frequencies below the fundamental frequency.

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