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51. 发明公开

EP3333849A1 CONTEXT-BASED ENTROPY CODING OF SAMPLE VALUES OF A SPECTRAL ENVELOPE 有权转让
公开(公告)号：EP3333849A1
公开(公告)日：2018-06-13
申请号：EP17210652.8
申请日：2014-07-15
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Ghido, Florin , Niedermeier, Andreas
IPC分类号： G10L19/02 , G10L19/032 , G10L21/038
CPC分类号： G10L19/06 , G10L19/0019 , G10L19/02 , G10L19/0204 , G10L19/028 , G10L19/032 , G10L19/038 , G10L21/038
摘要： An improved concept for coding sample values of a spectral envelope is obtained by combining spectrotemporal prediction on the one hand and context-based entropy coding the residuals, on the other hand, while particularly determining the context for a current sample value dependent on a measure of a deviation between a pair of already coded/decoded sample values of the spectral envelope in a spectrotemporal neighborhood of the current sample value. The combination of the spectrotemporal prediction on the one hand and the context-based entropy coding of the prediction residuals with selecting the context depending on the deviation measure on the other hand harmonizes with the nature of spectral envelopes.

52. 发明公开

EP3311382A1 HIGH-BAND SIGNAL GENERATION 有权
公开(公告)号：EP3311382A1
公开(公告)日：2018-04-25
申请号：EP16732032.4
申请日：2016-05-26
申请人： Qualcomm Incorporated
发明人： ATTI, Venkatraman , CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar
IPC分类号： G10L21/038 , G10L19/18
CPC分类号： G10L19/087 , G10L19/0204 , G10L19/03 , G10L19/08 , G10L19/167 , G10L19/24 , G10L21/0388
摘要： A device for signal processing includes a memory and a processor. The memory is configured to store a parameter associated with a bandwidth-extended audio stream. The processor is configured to select a plurality of non-linear processing functions based at least in part on a value of the parameter. The processor is also configured to generate a high-band excitation signal based on the plurality of non-linear processing functions.

53. 发明授权

EP3164869B1 CALCULATOR AND METHOD FOR DETERMINING PHASE CORRECTION DATA FOR AN AUDIO SIGNAL 有权
标题翻译：用于确定音频信号的相位校正数据的计算器和方法
公开(公告)号：EP3164869B1
公开(公告)日：2018-04-25
申请号：EP15731358.6
申请日：2015-06-25
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： DISCH, Sascha , LAITINEN, Mikko-Ville , PULKKI, Ville
IPC分类号： G10L19/02 , G10L21/038
CPC分类号： G10L19/0204 , G10L19/02 , G10L19/0208 , G10L19/025 , G10L19/18 , G10L19/26 , G10L21/007 , G10L21/038
摘要： It is shown an audio processor 50 for processing an audio signal 55. The audio processor comprises an audio signal phase measure calculator 60 configured for calculating a phase measure 80 of an audio signal for a time frame 75a, a target phase measure determiner 65 for determining a target phase measure 85 for said time frame 75a, and a phase corrector 70 configured for correcting phases 45 of the audio signal 55 for the time frame 75a using the calculated phase measure 80 and the target phase measure 85 to obtain a processed audio signal 90.

54. 发明授权

EP2471063B1 SIGNAL PROCESSING APPARATUS AND METHOD, AND PROGRAM 有权
标题翻译：信号处理装置和方法以及程序
公开(公告)号：EP2471063B1
公开(公告)日：2018-04-04
申请号：EP11814259.5
申请日：2011-07-27
申请人： Sony Corporation
发明人： YAMAMOTO, Yuki , CHINEN, Toru , HATANAKA, Mitsuyuki
IPC分类号： G10L19/26 , G10L19/02 , G10L21/038
CPC分类号： G10L19/02 , G10L19/26 , G10L21/038
摘要： A method, system, and computer program product for processing an encoded audio signal is described. In one exemplary embodiment, the system receives an encoded low-frequency range signal and encoded energy information used to frequency shift the encoded low-frequency range signal. The low-frequency range signal is decoded and an energy depression of the decoded signal is smoothed. The smoothed low-frequency range signal is frequency shifted to generate a high-frequency range signal. The low-frequency range signal and high-frequency range signal are then combined and outputted.

55. 发明授权

EP3025338B1 CONTEXT-BASED ENTROPY CODING OF SAMPLE VALUES OF A SPECTRAL ENVELOPE 有权
标题翻译：一个谱包络的样本值的基于上下文的熵编码
公开(公告)号：EP3025338B1
公开(公告)日：2018-03-07
申请号：EP14738866.4
申请日：2014-07-15
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： GHIDO, Florin , NIEDERMEIER, Andreas
IPC分类号： G10L19/02 , G10L19/032 , G10L21/038 , G10L19/038
CPC分类号： G10L19/06 , G10L19/0019 , G10L19/02 , G10L19/0204 , G10L19/028 , G10L19/032 , G10L19/038 , G10L21/038
摘要： An improved concept for coding sample values of a spectral envelope is obtained by combining spectrotemporal prediction on the one hand and context-based entropy coding the residuals, on the other hand, while particularly determining the context for a current sample value dependent on a measure of a deviation between a pair of already coded/decoded sample values of the spectral envelope in a spectrotemporal neighborhood of the current sample value. The combination of the spectrotemporal prediction on the one hand and the context-based entropy coding of the prediction residuals with selecting the context depending on the deviation measure on the other hand harmonizes with the nature of spectral envelopes.

56. 发明公开

EP3288031A1 APPARATUS AND METHOD FOR ENCODING AN AUDIO SIGNAL USING A COMPENSATION VALUE 审中-公开
标题翻译：用补偿值编码音频信号的装置和方法
公开(公告)号：EP3288031A1
公开(公告)日：2018-02-28
申请号：EP16185398.1
申请日：2016-08-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. , Friedrich-Alexander-Universität Erlangen-Nürnberg
发明人： Disch, Sascha , Reutelhuber, Franz , Büthe, Jan , Multrus, Markus , Edler, Bernd
IPC分类号： G10L21/038
CPC分类号： G10L21/038
摘要： An apparatus for encoding an audio signal, comprises: a core encoder for core encoding first audio data in a first spectral band; a parametric coder for parametrically coding second audio data in a second spectral band being different from the first spectral band, wherein the parametric coder comprises: an analyzer for analyzing first audio data in the first spectral band to obtain a first analysis result and for analyzing second audio data in the second spectral band to obtain a second analysis result; a compensator for calculating a compensation value using the first analysis result and the second analysis result; and a parameter calculated for calculating a parameter from the second audio data in the second spectral band using the compensation value.
摘要翻译：一种用于编码音频信号的设备，包括：核心编码器，用于对第一频谱带中的第一音频数据进行核心编码; 参数编码器，用于参数化地编码与所述第一光谱带不同的第二光谱带中的第二音频数据，其中所述参数编码器包括：分析器，用于分析所述第一光谱带中的第一音频数据以获得第一分析结果并分析第二第二频谱段中的音频数据以获得第二分析结果; 补偿器，用于使用第一分析结果和第二分析结果来计算补偿值; 以及使用补偿值计算用于从第二频谱带中的第二音频数据计算参数的参数。

57. 发明公开

EP3288027A1 APPARATUS AND METHOD FOR GENERATING AUDIO SUBBAND VALUES AND APPARATUS AND METHOD FOR GENERATING TIME-DOMAIN AUDIO SAMPLES 有权
标题翻译：用于产生音频子带值的装置和方法以及用于产生时域音频样本的装置和方法
公开(公告)号：EP3288027A1
公开(公告)日：2018-02-28
申请号：EP17169583.6
申请日：2007-10-23
申请人： Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
发明人： Schnell, Markus , Lutzky, Manfred , Lohwasser, Markus , Schmidt, Markus , Gayer, Marc , Mellar, Michael , Edler, Bernd , Multrus, Markus , Schuller, Gerald , Geiger, Ralf , Grill, Bernhard
IPC分类号： G10L19/022 , H03H17/02 , G10L19/02 , G10L25/45 , G10L21/038
CPC分类号： G10L19/0204 , G10L19/022 , G10L21/038 , G10L25/45 , H03H17/0266
摘要： An embodiment of an apparatus (100) for generating audio subband values in audio subband channels comprises an analysis windower (110) for windowing a frame (120) of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function (190) comprising a sequence of window coefficients to obtain windowed samples. The analysis window function (190) comprises a first group (200) of window coefficients and a second group (210) of window coefficients. The first group (200) of window coefficients is used for windowing later time-domain samples and the second group (210) of window coefficients is used for windowing an earlier time-domain samples. The apparatus (100) further comprises a calculator (170) for calculating the audio subband values using the windowed samples.
摘要翻译：用于在音频子带通道中生成音频子带值的设备（100）的实施例包括：分析加窗器（110），用于对时域音频输入采样的帧（120）进行加窗，所述时域音频输入采样的时间序列从早期采样延伸到稍后使用包括窗系数序列的分析窗函数（190）来采样以获得加窗样本。分析窗函数（190）包括窗系数的第一组（200）和窗系数的第二组（210）。窗系数的第一组（200）被用于对后面的时域采样进行加窗，并且窗系数的第二组（210）被用于对早期的时域采样进行加窗。该设备（100）还包括用于使用加窗样本来计算音频子带值的计算器（170）。

58. 发明公开

EP3252767A1 VOICE SIGNAL PROCESSING METHOD, RELATED APPARATUS, AND SYSTEM 有权
标题翻译：语音信号处理方法，相关装置和系统
公开(公告)号：EP3252767A1
公开(公告)日：2017-12-06
申请号：EP17171205.2
申请日：2017-05-16
申请人： Huawei Technologies Co., Ltd.
发明人： WANG, Bin , XIA, Bingyin , LIU, Zexin , MIAO, Lei
IPC分类号： G10L21/038 , G10L19/16 , G10L19/24
CPC分类号： H04M11/06 , G10L19/167 , G10L19/173 , G10L19/24 , G10L21/038 , H04M7/006 , H04N7/15
摘要： Embodiments of the present invention disclose a voice signal processing method, a related apparatus, and a system. The voice signal processing method includes: receiving, by a network device, a first voice coded signal from a first terminal, and performing voice decoding processing on the first voice coded signal to obtain a voice decoding parameter and a first voice decoded signal; performing, by using the voice decoding parameter, virtual bandwidth extension processing to obtain a bandwidth extension voice decoded signal corresponding to the first voice decoded signal; after combining the first voice decoded signal and the bandwidth extension voice decoded signal, performing voice coding processing to obtain a second voice coded signal; and sending the second voice coded signal to a second terminal that establishes a call connection to the first terminal, where a maximum frequency bandwidth supported by the first terminal is less than a maximum frequency bandwidth supported by the second terminal. In the embodiments of the present invention, service quality of terminals that have asymmetric maximum frequency bandwidth support capabilities can be improved.
摘要翻译：本发明的实施例公开了一种语音信号处理方法，相关装置和系统。所述语音信号处理方法包括：网络设备接收来自第一终端的第一语音编码信号，并对所述第一语音编码信号进行语音解码处理，得到语音解码参数和第一语音解码信号; 通过所述语音解码参数进行虚拟带宽扩展处理，得到与所述第一语音解码信号对应的带宽扩展语音解码信号; 在对所述第一语音解码信号和所述带宽扩展语音解码信号进行合并后，进行语音编码处理，得到第二语音编码信号; 将所述第二语音编码信号发送给与所述第一终端建立通话连接的第二终端，所述第一终端支持的最大频率带宽小于所述第二终端支持的最大频率带宽。在本发明的实施例中，可以提高具有非对称最大频率带宽支持能力的终端的服务质量。

59. 发明公开

EP3248192A1 SCALING FOR GAIN SHAPE CIRCUITRY 有权
标题翻译：增益形状电路的缩放
公开(公告)号：EP3248192A1
公开(公告)日：2017-11-29
申请号：EP16703190.5
申请日：2016-01-08
申请人： Qualcomm Incorporated
发明人： CHEBIYYAM, Venkata Subrahmanyam Chandra Sekhar , ATTI, Venkatraman S.
IPC分类号： G10L21/038
摘要： A method of operation of a device includes receiving a first set of samples and a second set of samples. The first set of samples corresponds to a portion of a first audio frame and the second set of samples corresponds to a second audio frame. The method further includes generating a target set of samples based on the first set of samples and a first subset of the second set of samples and generating a reference set of samples based at least partially on a second subset of the second set of samples. The method also includes scaling the target set of samples to generate a scaled target set of samples and generating a third set of samples based on the scaled target set of samples and one or more samples of the second set of samples.

60. 发明授权

EP3063761B1 AUDIO BANDWIDTH EXTENSION BY INSERTION OF TEMPORAL PRE-SHAPED NOISE IN FREQUENCY DOMAIN 有权
标题翻译：插入频率域中的时间预形成噪声的音频带宽扩展
公开(公告)号：EP3063761B1
公开(公告)日：2017-11-22
申请号：EP14792794.1
申请日：2014-10-30
申请人： Fraunhofer Gesellschaft zur Förderung der angewandten Forschung E.V.
发明人： DISCH, Sascha , MULTRUS, Markus , SCHUBERT, Benjamin , SCHNELL, Markus
IPC分类号： G10L19/02 , G10L19/028 , G10L19/16 , G10L21/038 , G10L19/24 , G10L19/03
CPC分类号： G10L19/028 , G10L19/0212 , G10L19/03 , G10L19/167 , G10L19/24 , G10L21/038
摘要： An audio decoder device for decoding a bitstream includes a bitstream receiver configured to receive the bitstream and to derive an encoded audio signal from the bitstream; a core decoder module configured for deriving a decoded audio signal in a time domain from the encoded audio signal; a temporal envelope generator configured to determine a temporal envelope of the decoded audio signal; a bandwidth extension module configured to produce a frequency domain bandwidth extension signal; a time-to-frequency converter configured to transform the decoded audio signal into a frequency domain decoded audio signal; a combiner configured to combine the frequency domain decoded audio signal and the frequency domain bandwidth extension signal in order to produce a bandwidth extended frequency domain audio signal; and a frequency-to-time converter configured to transform the bandwidth extended frequency domain audio signal into a bandwidth-extended time domain audio signal.

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