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1. 发明授权

US10629217B2 Method, device, and recording medium for coding based on a selected coding processing 有权
公开(公告)号：US10629217B2
公开(公告)日：2020-04-21
申请号：US16295039
申请日：2019-03-07
申请人： Nippon Telegraph and Telephone Corporation
发明人： Takehiro Moriya , Yutaka Kamamoto , Noboru Harada
IPC分类号： G10L19/22 , G10L19/20 , G10L19/06 , H03M7/30 , G10L19/00 , G10L19/02
CPC分类号： G10L19/22 , G10L19/20 , H03M7/30 , G10L19/0017 , G10L19/02 , G10L19/0204 , G10L19/06 , G10L2019/0016
摘要： A coding technology that efficiently codes an input sound signal irrespective of the characteristics thereof and can obtain a decoded sound signal that sounds less artificial to a listener. A coding method codes an input sound signal frame by frame of a predetermined time segment by a selected coding processing from a plurality of types of coding processing in the frequency domain, the coding method makes it possible for a selection unit to select coding processing which is different from the coding processing of the preceding frame as coding processing of the present frame if at least one of the magnitude of the energy of high frequency components of the input sound signal of the preceding frame and the magnitude of the energy of high frequency components of the input sound signal of the present frame is smaller than or equal to a predetermined threshold value.

2. 发明授权

US10074376B2 Coding device, decoding device, method, program and recording medium thereof 有权
公开(公告)号：US10074376B2
公开(公告)日：2018-09-11
申请号：US15306622
申请日：2015-03-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takehiro Moriya , Yutaka Kamamoto , Noboru Harada
IPC分类号： G10L19/00 , G10L19/07 , G10L19/032 , G10L19/06
CPC分类号： G10L19/07 , G10L19/032 , G10L19/06 , G10L19/24 , G10L2019/0016
摘要： A technology of accurately coding and decoding coefficients which are convertible into linear prediction coefficients even for a frame in which the spectrum variation is great while suppressing an increase in the code amount as a whole is provided. A coding device includes: a first coding unit that obtains a first code by coding coefficients which are convertible into linear prediction coefficients of more than one order; and a second coding unit that obtains a second code by coding at least quantization errors of the first coding unit if (A-1) an index Q commensurate with how high the peak-to-valley height of a spectral envelope is, the spectral envelope corresponding to the coefficients which are convertible into the linear prediction coefficients of more than one order, is larger than or equal to a predetermined threshold value Th1 and/or (B-1) an index Q′ commensurate with how short the peak-to-valley height of the spectral envelope is, is smaller than or equal to a predetermined threshold value Th1′.

3. 发明授权

US09837092B2 Classification between time-domain coding and frequency domain coding 有权
公开(公告)号：US09837092B2
公开(公告)日：2017-12-05
申请号：US15592573
申请日：2017-05-11
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： Yang Gao
IPC分类号： G10L21/00 , G10L19/125 , G10L19/22 , G10L19/002 , G10L19/00
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.

4. 发明申请

US20170053656A1 CODING DEVICE, DECODING DEVICE, METHOD, PROGRAM AND RECORDING MEDIUM THEREOF 审中-公开
标题翻译：编码设备，解码设备，方法，程序和记录介质
公开(公告)号：US20170053656A1
公开(公告)日：2017-02-23
申请号：US15307059
申请日：2015-03-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Takehiro MORIYA , Yutaka KAMAMOTO , Noboru HARADA
IPC分类号： G10L19/07 , G10L19/005 , G10L19/038
CPC分类号： G10L19/07 , G10L19/005 , G10L19/038 , G10L2019/0016
摘要： A coding method and a decoding method are provided which can use in combination a predictive coding and decoding method which is a coding and decoding method that can accurately express coefficients which are convertible into linear prediction coefficients with a small code amount and a coding and decoding method that can obtain correctly, by decoding, coefficients which are convertible into linear prediction coefficients of the present frame if a linear prediction coefficient code of the present frame is correctly input to a decoding device. A coding device includes: a predictive coding unit that obtains a first code by coding a differential vector formed of differentials between a vector of coefficients which are convertible into linear prediction coefficients of more than one order of the present frame and a prediction vector containing at least a predicted vector from a past frame, and obtains a quantization differential vector corresponding to the first code; and a non-predictive coding unit that generates a second code by coding a correction vector which is formed of differentials between the vector of the coefficients which are convertible into the linear prediction coefficients of more than one order of the present frame and the quantization differential vector or formed of some of elements of the differentials.
摘要翻译：提供了一种编码方法和解码方法，其可以组合使用预测编码和解码方法，该预测编码和解码方法是可以用小代码量和编码和解码方法精确地表达可转换为线性预测系数的系数的编码和解码方法如果当前帧的线性预测系数码被正确地输入到解码装置，则可以通过解码可以将可转换成当前帧的线性预测系数的系数正确地获得。一种编码装置，包括：预测编码单元，其通过对由可转换为当前帧的多于一个阶的线性预测系数的系数矢量和至少包含至少一个的预测矢量的差分矢量构成的差分矢量进行编码，来自过去帧的预测矢量，并且获得对应于第一码的量化差分矢量; 以及非预测编码单元，其通过对由可转换为当前帧的多于一个阶的线性预测系数的矢量和量化差分矢量之间的差分构成的校正矢量进行编码来生成第二码，或由差分的一些元件形成。

5. 发明申请

US20160336018A1 WEIGHT FUNCTION DETERMINATION DEVICE AND METHOD FOR QUANTIZING LINEAR PREDICTION CODING COEFFICIENT 审中-公开
标题翻译：重量函数确定装置及其线性预测编码系统的方法
公开(公告)号：US20160336018A1
公开(公告)日：2016-11-17
申请号：US15112006
申请日：2015-01-15
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Ho-sang SUNG , Eun-mi OH
IPC分类号： G10L19/032 , G10L25/15 , G10L19/12 , G10L19/06
CPC分类号： G10L19/032 , G10L19/06 , G10L19/07 , G10L19/12 , G10L25/15 , G10L2019/0016
摘要： A weighting function determination method includes obtaining a line spectral frequency (LSF) coefficient or an immitance spectral frequency (ISF) coefficient from a linear predictive coding (LPC) coefficient of an input signal and determining a weighting function by combining a first weighting function based on spectral analysis information and a second weighting function based on position information of the LSF coefficient or the ISF coefficient.
摘要翻译：一种加权函数确定方法包括从输入信号的线性预测编码（LPC）系数获得线谱频率（LSF）系数或亚频谱频率（ISF）系数，并通过组合基于频谱分析信息和基于LSF系数或ISF系数的位置信息的第二加权函数。

6. 发明申请

US20160210979A1 METHOD AND APPARATUS FOR PREDICTING HIGH BAND EXCITATION SIGNAL 有权
标题翻译：用于预测高带激发信号的方法和装置
公开(公告)号：US20160210979A1
公开(公告)日：2016-07-21
申请号：US15080950
申请日：2016-03-25
申请人： HUAWEI TECHNOLOGIES CO.,LTD.
发明人： Zexin Liu , Lei Miao
IPC分类号： G10L19/12 , G10L19/06 , G10L19/02
CPC分类号： G10L19/12 , G10L19/0208 , G10L19/06 , G10L19/08 , G10L19/24 , G10L21/038 , G10L2019/0016
摘要： A method and an apparatus for predicting a high band excitation signal are disclosed. The method includes: acquiring, according to a received low band bitstream, a set of spectral frequency parameters that are arranged in an order of frequencies, calculating a spectral frequency parameter difference between every two spectral frequency parameters that have a same position interval; acquiring a minimum spectral frequency parameter difference from the calculated spectral frequency parameter differences; determining, according to a frequency bin that corresponds to the minimum spectral frequency parameter difference, a start frequency bin for predicting a high band excitation signal from a low band; and predicting the high band excitation signal from the low band according to the start frequency bin. By implementing embodiments of the present invention, a high band excitation signal can be better predicted, thereby improving performance of the high band excitation signal.
摘要翻译：公开了一种用于预测高频带激励信号的方法和装置。该方法包括：根据接收到的低频带比特流获取以频率顺序排列的一组频谱频率参数，计算具有相同位置间隔的每两个频谱频率参数之间的频谱频率参数差; 从所计算的频谱频率参数差获取最小频谱参数差; 根据对应于最小频谱频率参数差的频率仓确定用于从低频段预测高频带激励信号的起始频率仓; 并根据起始频率仓预测来自低频段的高频激励信号。通过实现本发明的实施例，可以更好地预测高频带激励信号，从而提高高频带激励信号的性能。

7. 发明申请

US20160148621A1 APPARATUS AND METHOD FOR AUDIO SIGNAL ENVELOPE ENCODING, PROCESSING, AND DECODING BY SPLITTING THE AUDIO SIGNAL ENVELOPE EMPLOYING DISTRIBUTION QUANTIZATION AND CODING 审中-公开
标题翻译：音频信号编码，处理和解码的装置和方法，分析使用分配数量和编码的音频信号包
公开(公告)号：US20160148621A1
公开(公告)日：2016-05-26
申请号：US14964234
申请日：2015-12-09
申请人： Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
发明人： Tom Baeckstroem , Benjamin Schubert , Markus Multrus , Sascha Disch , Konstantin Schmidt , Grzegorz Pietrzyk
IPC分类号： G10L19/06 , G10L19/032
CPC分类号： G10L19/06 , G10L19/03 , G10L19/032 , G10L2019/0016
摘要： An apparatus for decoding to obtain a reconstructed audio signal envelope includes a signal envelope reconstructor for generating the reconstructed audio signal envelope depending on one or more splitting points and an output interface for outputting the reconstructed audio signal envelope. The signal envelope reconstructor is configured to generate the reconstructed audio signal envelope such that the one or more splitting points divide the reconstructed audio signal envelope into two or more audio signal envelope portions, and to generate the reconstructed audio signal envelope such that, for each of the two or more signal envelope portions, an absolute value of its signal envelope portion value is greater than half of an absolute value of the signal envelope portion value of each of the other signal envelope portions.
摘要翻译：用于解码以获得重构音频信号包络的装置包括用于根据一个或多个分割点产生重构音频信号包络的信号包络重建器和用于输出重构音频信号包络的输出接口。信号包络重构器被配置为产生重建的音频信号包络，使得一个或多个分割点将重建的音频信号包络分成两个或更多个音频信号包络部分，并且生成重建的音频信号包络，使得对于每个两个或多个信号包络部分，其信号包络部分值的绝对值大于每个其它信号包络部分的信号包络部分值的绝对值的一半。

8. 发明授权

US09263025B2 Method for speech coding, method for speech decoding and their apparatuses 有权
公开(公告)号：US09263025B2
公开(公告)日：2016-02-16
申请号：US14189013
申请日：2014-02-25
申请人： BlackBerry Limited
发明人： Tadashi Yamaura
IPC分类号： G10L13/02 , G10L19/012 , G10L19/107 , G10L19/12 , G10L19/18 , G10L25/93
CPC分类号： G10L19/135 , G10L13/02 , G10L19/012 , G10L19/06 , G10L19/083 , G10L19/09 , G10L19/107 , G10L19/12 , G10L19/125 , G10L19/18 , G10L21/0264 , G10L25/93 , G10L2019/0002 , G10L2019/0005 , G10L2019/0007 , G10L2019/0011 , G10L2019/0012 , G10L2019/0016
摘要： A high quality speech is reproduced with a small data amount in speech coding and decoding for performing compression coding and decoding of a speech signal to a digital signal. In speech coding method according to a code-excited linear prediction (CELP) speech coding, a noise level of a speech in a concerning coding period is evaluated by using a code or coding result of at least one of spectrum information, power information, and pitch information, and various excitation codebooks are used based on an evaluation result.

9. 发明申请

US20160027450A1 Classification Between Time-Domain Coding and Frequency Domain Coding 有权
标题翻译：时域编码与频域编码之间的分类
公开(公告)号：US20160027450A1
公开(公告)日：2016-01-28
申请号：US14511943
申请日：2014-10-10
申请人： Huawei Technologies Co., Ltd.
发明人： Yang Gao
IPC分类号： G10L19/125
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：基于用于编码数字信号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。

10. 发明申请

US20150380007A1 TEMPORAL GAIN ADJUSTMENT BASED ON HIGH-BAND SIGNAL CHARACTERISTIC 有权
标题翻译：基于高频信号特征的时间增益调整
公开(公告)号：US20150380007A1
公开(公告)日：2015-12-31
申请号：US14731276
申请日：2015-06-04
申请人： QUALCOMM Incorporated
发明人： Venkatraman S. Atti , Venkatesh Krishnan , Vivek Rajendran , Venkata Subrahmanyam Chandra Sekhar Chebiyyam , Subasingha Shaminda Subasingha
IPC分类号： G10L19/12
CPC分类号： G10L19/12 , G10L19/0204 , G10L19/032 , G10L19/06 , G10L19/24 , G10L21/0224 , G10L21/038 , G10L25/12 , G10L2019/0016
摘要： The present disclosure provides techniques for adjusting a temporal gain parameter and for adjusting linear prediction coefficients. A value of the temporal gain parameter may be based on a comparison of a synthesized high-band portion of an audio signal to a high-band portion of the audio signal. If a signal characteristic of an upper frequency range of the high-band portion satisfies a first threshold, the temporal gain parameter may be adjusted. A linear prediction (LP) gain may be determined based on an LP gain operation that uses a first value for an LP order. The LP gain may be associated with an energy level of an LP synthesis filter. The LP order may be reduced if the LP gain satisfies a second threshold.
摘要翻译：本公开提供了用于调整时间增益参数和用于调整线性预测系数的技术。时间增益参数的值可以基于音频信号的合成高频带部分与音频信号的高频带部分的比较。如果高频带部分的较高频率范围的信号特征满足第一阈值，则可以调整时间增益参数。可以基于对LP阶使用第一值的LP增益操作来确定线性预测（LP）增益。 LP增益可以与LP合成滤波器的能级相关联。如果LP增益满足第二阈值，LP阶可以减小。

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