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21. 发明授权

US09570080B2 Apparatus and method for encoding a multi-channel audio signal 有权
标题翻译：用于对多声道音频信号进行编码的装置和方法
公开(公告)号：US09570080B2
公开(公告)日：2017-02-14
申请号：US13920549
申请日：2013-06-18
申请人： MOTOROLA MOBILITY LLC
发明人： Jonathan A Gibbs
IPC分类号： G10L19/00 , G10L19/008 , G10L25/21 , H03M3/00 , G10L25/12 , G10L19/06 , G10L25/06 , G10L25/18 , G10L19/032 , G10L25/24
CPC分类号： G10L19/12 , G10L19/00 , G10L19/008 , G10L19/032 , G10L19/06 , G10L19/087 , G10L19/24 , G10L25/06 , G10L25/12 , G10L25/18 , G10L25/21 , G10L25/24 , H03M3/466 , H04S2400/01 , H04S2420/03
摘要： An encoding apparatus comprises a frame processor (105) which receives a multi channel audio signal comprising at least a first audio signal from a first microphone (101) and a second audio signal from a second microphone (103). An ITD processor 107 then determines an inter time difference between the first audio signal and the second audio signal and a set of delays (109, 111) generates a compensated multi channel audio signal from the multi channel audio signal by delaying at least one of the first and second audio signals in response to the inter time difference signal. A combiner (113) then generates a mono signal by combining channels of the compensated multi channel audio signal and a mono signal encoder (115) encodes the mono signal. The inter time difference may specifically be determined by an algorithm based on determining cross correlations between the first and second audio signals.
摘要翻译：编码装置包括帧处理器（105），其接收包括来自第一麦克风（101）的至少第一音频信号和来自第二麦克风（103）的第二音频信号的多声道音频信号。 ITD处理器107然后确定第一音频信号和第二音频信号之间的时间差，并且一组延迟（109,111）通过延迟多声道音频信号中的至少一个从多声道音频信号产生经补偿的多声道音频信号响应于时间差信号的第一和第二音频信号。组合器（113）然后通过组合经补偿的多声道音频信号的信道和对单声道信号进行编码的单声道信号编码器（115）来产生单声道信号。时间差可以具体地通过基于确定第一和第二音频信号之间的互相关的算法来确定。

22. 发明申请

US20170040025A1 METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH FREQUENCY SIGNAL 审中-公开
标题翻译：编码和解码高频信号的方法和装置
公开(公告)号：US20170040025A1
公开(公告)日：2017-02-09
申请号：US15333684
申请日：2016-10-25
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Ki-hyun CHOO , Lei MIAO , Eun-mi OH
IPC分类号： G10L19/06 , G10L25/12 , G10L19/16 , G10L19/02
CPC分类号： G10L19/06 , G10L19/02 , G10L19/0208 , G10L19/04 , G10L19/07 , G10L19/167 , G10L21/038 , G10L25/12 , G10L25/21 , G10L25/90
摘要： Provided are a method and apparatus for encoding and decoding a high frequency signal by using a low frequency signal. The high frequency signal can be encoded by extracting a coefficient by linear predicting a high frequency signal, and encoding the coefficient, generating a signal by using the extracted coefficient and a low frequency signal, and encoding the high frequency signal by calculating a ratio between the high frequency signal and an energy value of the generated signal. Also, the high frequency signal can be decoded by decoding a coefficient, which is extracted by linear predicting a high frequency signal, and a low frequency signal, and generating a signal by using the decoded coefficient and the decoded low frequency signal, and adjusting the generated signal by decoding a ratio between the generated signal and an energy value of the high frequency signal.
摘要翻译：提供了一种通过使用低频信号对高频信号进行编码和解码的方法和装置。高频信号可以通过线性预测高频信号提取系数进行编码，并对该系数进行编码，通过使用提取的系数和低频信号产生信号，并通过计算高频信号之间的比率来对高频信号进行编码高频信号和产生的信号的能量值。此外，可以通过对通过线性预测高频信号提取的系数和低频信号进行解码来解码高频信号，并且通过使用解码的系数和解码的低频信号来生成信号，并且调整通过解码所生成的信号与高频信号的能量值之间的比率来产生信号。

23. 发明申请

US20160343387A1 LINEAR PREDICTIVE ANALYSIS APPARATUS, METHOD, PROGRAM AND RECORDING MEDIUM 有权
标题翻译：线性预测分析装置，方法，程序和记录介质
公开(公告)号：US20160343387A1
公开(公告)日：2016-11-24
申请号：US15112318
申请日：2015-01-20
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Yutaka KAMAMOTO , Takehiro MORIYA , Noboru HARADA
IPC分类号： G10L25/12 , G10L19/06 , G10L25/90 , G10L25/06
CPC分类号： G10L25/12 , G10L19/06 , G10L25/06 , G10L25/21 , G10L25/90
摘要： An autocorrelation calculating part calculates autocorrelation Ro(i) from an input signal. A predictive coefficient calculating part performs linear predictive analysis using modified autocorrelation R′o(i) obtained by multiplying the autocorrelation Ro(i) by a coefficient wo(i). Here, it is assumed that a case where, for at least part of each order i, the coefficient wo(i) corresponding to each order i monotonically increases as a value having negative correlation with a fundamental frequency of an input signal in a current frame or a past frame increases and a case where the coefficient wo(i) monotonically decreases as a value having positive correlation with a pitch gain in a current frame or a past frame increases, are included.
摘要翻译：自相关计算部分根据输入信号计算自相关Ro（i）。预测系数计算部分使用通过将自相关Ro（i）乘以系数wo（i）获得的修正自相关R'o（i）来执行线性预测分析。这里，假设对于每个阶数i的至少一部分，对应于每个阶数i的系数wo（i）单调增加为与当前帧中的输入信号的基频具有负相关的值或过去帧增加，并且包括系数wo（i）随着与当前帧或过去帧中的音调增益具有正相关性的值而单调减小的情况。

24. 发明申请

US20160336019A1 LINEAR PREDICTIVE ANALYSIS APPARATUS, METHOD, PROGRAM AND RECORDING MEDIUM 有权
标题翻译：线性预测分析装置，方法，程序和记录介质
公开(公告)号：US20160336019A1
公开(公告)日：2016-11-17
申请号：US15112534
申请日：2015-01-20
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Yutaka KAMAMOTO , Takehiro MORIYA , Noboru HARADA
IPC分类号： G10L19/06 , G10L25/12 , G10L25/06
CPC分类号： G10L19/06 , G10L25/06 , G10L25/12 , G10L25/21 , G10L25/90
摘要： An autocorrelation calculating part calculates autocorrelation Ro(i) from an input signal. A predictive coefficient calculating part performs linear predictive analysis using modified autocorrelation R′o(i) obtained by multiplying the autocorrelation Ro(i) by a coefficient wo(i). Here, a case is comprised where, for at least part of each order i, the coefficient wo(i) corresponding to each order i monotonically decreases as a value having positive correlation with a pitch gain in an input signal of a current frame or a past frame increases.
摘要翻译：自相关计算部分根据输入信号计算自相关Ro（i）。预测系数计算部分使用通过将自相关Ro（i）乘以系数wo（i）获得的修正自相关R'o（i）来执行线性预测分析。这里，对于每个阶数i的至少一部分，对应于每个阶数的系数wo（i）i单调减小为与当前帧的输入信号中的音调增益具有正相关性的值，过去帧增加。

25. 发明申请

US20160140975A1 LINEAR PREDICTION ANALYSIS DEVICE, METHOD, PROGRAM, AND STORAGE MEDIUM 审中-公开
标题翻译：线性预测分析设备，方法，程序和存储介质
公开(公告)号：US20160140975A1
公开(公告)日：2016-05-19
申请号：US14905158
申请日：2014-07-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Yutaka KAMAMOTO , Takehiro MORIYA , Noboru HARADA
IPC分类号： G10L19/06 , G10L19/02 , G10L25/27 , G10L25/06 , G10L25/12 , G10L25/18 , G10L21/04 , G10L19/032
CPC分类号： G10L19/06 , G10L19/0212 , G10L19/032 , G10L21/04 , G10L25/06 , G10L25/12 , G10L25/18 , G10L25/27
摘要： An autocorrelation calculation unit 21 calculates an autocorrelation RO(i) from an input signal. A prediction coefficient calculation unit 23 performs linear prediction analysis by using a modified autocorrelation R′O(i) obtained by multiplying a coefficient wO(i) by the autocorrelation RO(i). It is assumed here, for each order i of some orders i at least, that the coefficient wO(i) corresponding to the order i is in a monotonically increasing relationship with an increase in a value that is negatively correlated with a fundamental frequency of the input signal of the current frame or a past frame.
摘要翻译：自相关计算单元21根据输入信号计算自相关值RO（i）。预测系数计算单元23通过使用通过将系数wO（i）乘以自相关RO（i）而获得的修改的自相关R'O（i）来执行线性预测分析。这里假设，对于至少一些阶数i的每个阶数i，对应于阶数i的系数w O（i）与与基本频率的基本频率负相关的值的增加是单调递增的关系当前帧或过去帧的输入信号。

26. 发明授权

US09214158B2 Audio decoding device and audio decoding method 有权
标题翻译：音频解码装置和音频解码方法
公开(公告)号：US09214158B2
公开(公告)日：2015-12-15
申请号：US13904165
申请日：2013-05-29
申请人： FUJITSU LIMITED
发明人： Yohei Kishi , Akira Kamano , Shunsuke Takeuchi , Miyuki Shirakawa , Masanao Suzuki
IPC分类号： G10L19/04 , G10L19/008 , G10L25/12 , G10L19/02
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/04 , G10L25/12
摘要： An audio decoding device includes a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, decoding, using a first channel signal and a second channel signal included in a plurality of channels of an audio signal having a first frequency range and a second frequency range, a first prediction coefficient of the first frequency range and a second prediction coefficient of the second frequency range, both selected from a code book when prediction-encoding a third channel signal that is not subjected to prediction encoding and that is included in the plurality of channels; decoding a residual signal included in the first frequency range, the residual signal representing an error occurring in prediction encoding; and prediction-decoding the third channel signal subjected to prediction-encoding in the second frequency range from the first channel signal, the second channel signal.
摘要翻译：音频解码装置包括处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行，解码使用包括在具有第一频率范围的音频信号的多个通道中的第一通道信号和第二通道信号以及第二频率范围，第一频率范围的第一预测系数和第二频率范围的第二预测系数，两者都是从对未进行预测编码的第三信道信号进行预测编码时的码本中选择的，包括在多个通道中; 对包含在第一频率范围内的残差信号进行解码，残差信号表示在预测编码中发生的误差; 并从第一信道信号，第二信道信号预测解码在第二频率范围内进行预测编码的第三信道信号。

27. 发明授权

US09135921B2 Audio coding device and method 有权
标题翻译：音频编码装置及方法
公开(公告)号：US09135921B2
公开(公告)日：2015-09-15
申请号：US13713487
申请日：2012-12-13
申请人： FUJITSU LIMITED
发明人： Yohei Kishi , Miyuki Shirakawa , Shunsuke Takeuchi , Masanao Suzuki
IPC分类号： H04R5/00 , G10L19/008 , G10L19/00 , G10L19/02 , G10L25/12
CPC分类号： G10L19/008 , G10L19/0204 , G10L19/0212 , G10L25/12 , G10L2019/0001
摘要： An audio coding device that uses a first-channel signal, a second-channel signal, and a plurality of channel prediction coefficients included in a code book, according to which predictive coding is performed on a third-channel signal, the first-channel signal, the second-channel signal, and the third-channel signal being included in a plurality of channels of an audio signal, the device includes, a processor; and a memory which stores a plurality of instructions, which when executed by the processor, cause the processor to execute, determining a distribution of error defined by a difference between the third-channel signal before predictive coding and the third-channel signal after predictive coding as a given curved surface according to the first-channel signal, the second-channel signal, and the third-channel signal before predictive coding; and calculating channel prediction coefficients, included in the code book.
摘要翻译：一种音频编码装置，其使用包括在码本中的第一信道信号，第二信道信号和多个信道预测系数，根据该编码装置对第三信道信号进行预测编码，第一信道信号，所述第二声道信号和所述第三声道信号被包括在音频信号的多个声道中，所述装置包括：处理器; 以及存储器，其存储多个指令，所述指令在由所述处理器执行时使所述处理器执行，确定由预测编码之前的第三信道信号与预测编码之后的第三信道信号之间的差定义的误差分布作为在预测编码之前的根据第一信道信号，第二信道信号和第三信道信号的给定曲面; 并计算包含在码本中的信道预测系数。

28. 发明申请

US20140372108A1 METHOD AND APPARATUS FOR ENCODING AND DECODING HIGH FREQUENCY SIGNAL 审中-公开
标题翻译：编码和解码高频信号的方法和装置
公开(公告)号：US20140372108A1
公开(公告)日：2014-12-18
申请号：US14474220
申请日：2014-09-01
申请人： SAMSUNG ELECTRONICS CO., LTD.
发明人： Ki-hyun CHOO , Lei MIAO , Eun-mi OH
IPC分类号： G10L19/06 , G10L25/12 , G10L25/90 , G10L19/02 , G10L19/07
CPC分类号： G10L19/06 , G10L19/02 , G10L19/0208 , G10L19/04 , G10L19/07 , G10L19/167 , G10L21/038 , G10L25/12 , G10L25/21 , G10L25/90
摘要： Provided are a method and apparatus for encoding and decoding a high frequency signal by using a low frequency signal. The high frequency signal can be encoded by extracting a coefficient by linear predicting a high frequency signal, and encoding the coefficient, generating a signal by using the extracted coefficient and a low frequency signal, and encoding the high frequency signal by calculating a ratio between the high frequency signal and an energy value of the generated signal. Also, the high frequency signal can be decoded by decoding a coefficient, which is extracted by linear predicting a high frequency signal, and a low frequency signal, and generating a signal by using the decoded coefficient and the decoded low frequency signal, and adjusting the generated signal by decoding a ratio between the generated signal and an energy value of the high frequency signal.
摘要翻译：提供了一种通过使用低频信号对高频信号进行编码和解码的方法和装置。高频信号可以通过线性预测高频信号提取系数进行编码，并对该系数进行编码，通过使用提取的系数和低频信号产生信号，并通过计算高频信号之间的比率来对高频信号进行编码高频信号和产生的信号的能量值。此外，可以通过对通过线性预测高频信号提取的系数和低频信号进行解码来解码高频信号，并且通过使用解码的系数和解码的低频信号来生成信号，并且调整通过解码所生成的信号与高频信号的能量值之间的比率来产生信号。

29. 发明授权

US6038530A Communication network for transmitting speech signals 失效
标题翻译：用于传输语音信号的通信网络
公开(公告)号：US6038530A
公开(公告)日：2000-03-14
申请号：US20606
申请日：1998-02-09
申请人： Rakesh Taori , Andreas J. Gerrits
发明人： Rakesh Taori , Andreas J. Gerrits
IPC分类号： G10L19/07 , G10L25/12 , H03M7/30 , H04B14/04 , G10L9/14
CPC分类号： G10L19/07 , G10L25/12
摘要： In a speech communication network in which a transmitter (1) transmits speech signals via a network (4) to a receiver (8), it can happen that more traffic is offered to the network (4) than it can handle. In order to reduce the network load, at least one node (24) is arranged to perform bitrate reduction to delete some of the prediction parameters representing the speech signal. It can also be the case that a receiver comprises a speech decoder having insufficient computational power available for decoding the encoded speech signal. In such case, the speech decoder is arranged for using only a part of the prediction parameters available. This results in a lower complexity of the synthesis filter (60).
摘要翻译：在其中发射机（1）经由网络（4）向接收机（8）发送语音信号的语音通信网络中，可能发生的是，向网络（4）提供比它能够处理的更多的业务量。为了减少网络负载，布置至少一个节点（24）以执行比特率降低以删除表示语音信号的一些预测参数。也可以是接收机包括语音解码器，其具有可用于解码编码语音信号的计算能力不足。在这种情况下，语音解码器被布置为仅使用可用的一部分预测参数。这导致合成滤波器（60）的较低复杂度。

30. 发明授权

US5778334A Speech coders with speech-mode dependent pitch lag code allocation patterns minimizing pitch predictive distortion 失效
标题翻译：具有语音模式的音调滞后码分配模式的语音编码器使音高预测失真最小化
公开(公告)号：US5778334A
公开(公告)日：1998-07-07
申请号：US510217
申请日：1995-08-02
申请人： Kazunori Ozawa , Masahiro Serizawa
发明人： Kazunori Ozawa , Masahiro Serizawa
IPC分类号： G10L19/08 , G10L19/12 , G10L25/12 , G10L9/14
CPC分类号： G10L19/08 , G10L19/12 , G10L25/12
摘要： A speech coding device capable of delivering a speech signal of excellent sound quality at a low bit rate is disclosed. The disclosed device is characterized by a method of calculating lag corresponding to pitch period and a speech signal coding method. Lag is calculated as follows: A speech signal is divided into frames; one frame is divided into a plurality of subframes; for each frame, subframes in which lag of a speech signal is expressed in the form of a differential relative to lag of a previous subframe and subframes in which lag is expressed in the form of an absolute value, i.e., the lag value itself, are established; a plurality of bit allocation patterns are established for each frame that allocate bits for expressing lag as an absolute value or a differential in each of the plurality of subframes; for each bit allocation pattern, pitch predictive distortion is calculated for every subframe; accumulated distortion is calculated by accumulating the pitch predictive distortion over a predetermined plurality of subframes in the frame; a bit allocation pattern is selected so as to minimize the accumulated distortion. The lags in the subframes of the selected pattern are determined as the lags in the subframes of interest.
摘要翻译：公开了能够以低比特率传送优质音质的语音信号的语音编码装置。所公开的装置的特征在于计算与音调周期相对应的延迟的方法和语音信号编码方法。滞后计算如下：语音信号分为帧; 一帧被分成多个子帧; 对于每个帧，语音信号的滞后以相对于先前子帧的滞后的差分的形式表示的子帧和其中以绝对值的形式（即滞后值本身）表示滞后的子帧是成立为分配用于表示滞后的位作为多个子帧中的每一个中的绝对值或差分的每个帧建立多个位分配模式; 对于每个位分配模式，针对每个子帧计算音调预测失真; 通过在帧中的预定多个子帧上累积音调预测失真来计算累积失真; 选择位分配模式以使累积的失真最小化。所选图案的子帧中的滞后被确定为感兴趣的子帧中的滞后。

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