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1. 发明申请

WO2012089671A4 DYNAMICAL ADAPTATION OF DATA ENCODING DEPENDENT ON CPU LOAD 审中-公开
标题翻译：数据编码依赖于CPU负载的动态适应
公开(公告)号：WO2012089671A4
公开(公告)日：2012-08-23
申请号：PCT/EP2011073972
申请日：2011-12-23
申请人： SKYPE , ASTROM HENRIK , SORENSEN KARSTEN , VOS KOEN
发明人： ASTROM HENRIK , SORENSEN KARSTEN , VOS KOEN
IPC分类号： H04M1/253 , H04N7/26 , H04N21/442
CPC分类号： H04M1/2535 , H04L65/60 , H04N21/233 , H04N21/442 , H04N21/6379 , H04N2007/145
摘要： Method, user terminal (104), communication system (100) and computer program product for processing audio data for transmission over a network (106) in a communication session between the user terminal (104) and a further user terminal (114). Samples of audio data which have a sampling frequency and which provide a digital representation of an analogue audio signal are transmitted to the further user terminal (114) in the communication session. During the communication session, an estimate of processing resources available for processing audio data in the communication session is repeatedly determined (S604), and the sampling frequency is dynamically adjusted during the communication session based on the determined estimate of available processing resources (S606).
摘要翻译：方法，用户终端（104），通信系统（100）和用于在用户终端（104）和另一用户终端（114）之间的通信会话中处理用于在网络（106）上传输的音频数据的计算机程序产品。具有采样频率并且提供模拟音频信号的数字表示的音频数据的样本在通信会话中被发送到另外的用户终端（114）。在通信会话期间，重复确定可用于处理通信会话中的音频数据的处理资源的估计（S604），并且基于所确定的可用处理资源的估计，在通信会话期间动态地调整采样频率（S606）。

2. 发明申请

WO2011057970A1 GAIN CONTROL FOR AN AUDIO SIGNAL 审中-公开
标题翻译：音频信号增益控制
公开(公告)号：WO2011057970A1
公开(公告)日：2011-05-19
申请号：PCT/EP2010/066946
申请日：2010-11-05
申请人： SKYPE LIMITED , SORENSEN, Karsten , BERGENHEIM, Jon , VOS, Koen
发明人： SORENSEN, Karsten , BERGENHEIM, Jon , VOS, Koen
IPC分类号： H03G3/32 , G10L21/02
CPC分类号： H03G3/32 , G10L21/0208
摘要： A method and system for modifying an audio signal, the method comprising: receiving the audio signal at signal processing means; analysing the received audio signal to identify characteristic signal components in the audio signal; determining that another signal is input to the signal processing means, the input signal resulting from an activity which generates noise in the audio signal; and selectively applying an adjusted gain to the audio signal based on the determination that the input signal is input to the signal processing means, wherein the adjusted gain is generated in dependence upon the signal strength of the identified signal components.
摘要翻译：一种用于修改音频信号的方法和系统，所述方法包括：在信号处理装置处接收音频信号; 分析接收到的音频信号以识别音频信号中的特征信号分量; 确定另一信号被输入到所述信号处理装置，所述输入信号是由在所述音频信号中产生噪声的活动产生的; 以及基于所述输入信号被输入到所述信号处理装置的确定来选择性地对所述音频信号施加调整的增益，其中根据所识别的信号分量的信号强度来产生所述调整后的增益。

3. 发明申请

WO2010066861A3 REGENERATION OF WIDEBAND SPEECH 审中-公开
标题翻译：更新宽带语音
公开(公告)号：WO2010066861A3
公开(公告)日：2010-08-05
申请号：PCT/EP2009066876
申请日：2009-12-10
申请人： SKYPE LTD , NILSSON MATTIAS , VANG ANDERSEN SOREN , VOS KOEN BERNARD
发明人： NILSSON MATTIAS , VANG ANDERSEN SOREN , VOS KOEN BERNARD
IPC分类号： G10L21/02 , G10L21/038
CPC分类号： G10L21/038
摘要： A method of regenerating wideband speech from narrowband speech, the method comprising: receiving samples of a narrowband speech signal in a first range of frequencies; modulating received samples of the narrowband speech signal with a modulation signal having a modulating frequency adapted to upshift each frequency in the first range of frequencies by an amount determined by the modulating frequency wherein the modulating frequency is selected to translate into a target band a selected frequency band within the first range of signals; filtering the modulated samples using a target band filter to form a regenerated speech signal in the target band; and combining the narrow band speech signal with the regenerated speech signal in the target band to regenerate a wideband speech signal, the method comprising the step of controlling the modulated samples to lie in a second range of frequencies identified by determining a signal characteristic of frequencies in the first range of frequencies.
摘要翻译：一种从窄带语音再生宽带语音的方法，该方法包括：在第一频率范围内接收窄带语音信号的样本; 用具有调制频率的调制信号调制接收到的窄带语音信号样本，该调制频率适于将第一频率范围中的每个频率升频由调制频率确定的量，其中选择调制频率以将目标频带转换为选定频率在第一信号范围内; 使用目标频带滤波器对经调制的采样进行滤波以在目标频带中形成再生语音信号; 以及将窄带语音信号与目标频带中的再生语音信号组合以再生宽带语音信号，该方法包括以下步骤：将调制样本控制在通过确定频率的信号特征的第二频率范围内第一个频率范围。

4. 发明申请

WO2010079169A1 PYRAMID VECTOR AUDIO CODING 审中-公开
标题翻译： PYRAMID矢量音频编码
公开(公告)号：WO2010079169A1
公开(公告)日：2010-07-15
申请号：PCT/EP2010/050059
申请日：2010-01-05
申请人： SKYPE LIMITED , VOS, Koen Bernard
发明人： VOS, Koen Bernard
IPC分类号： G10L19/02
CPC分类号： G10L19/038
摘要： A system, and method for encoding one or more parent blocks of values, the number of values being the length of each block. The method comprises for each parent block: (a) determining a first sum of values in the parent block; (b) splitting the parent block into smaller subblocks; (c) for at least one of the subblocks, determining a second sum of the values in the subblock, selecting a likelihood table from the plurality of likelihood tables based on said first sum of values in the parent block and encoding the second sum using the likelihood table; (d) designating each subblock a parent block; (e) carrying out steps (a), (b), (c) and (d) until at least one parent block reaches a predetermined condition.
摘要翻译：用于编码一个或多个父值块的系统和方法，值的数量是每个块的长度。该方法包括对于每个父块：（a）确定父块中的值的第一和; （b）将父块分割成更小的子块; （c）对于所述子块中的至少一个，确定所述子块中的值的第二和，基于所述父块中的所述第一和值，从所述多个似然表中选择似然表，并且使用可能性表; （d）指定每个子块为父块; （e）执行步骤（a），（b），（c）和（d），直到至少一个母体块达到预定条件。

5. 发明申请

WO2010079164A1 SPEECH CODING 审中-公开
标题翻译：语音编码
公开(公告)号：WO2010079164A1
公开(公告)日：2010-07-15
申请号：PCT/EP2010/050052
申请日：2010-01-05
申请人： SKYPE LIMITED , VOS, Koen Bernard
发明人： VOS, Koen Bernard
IPC分类号： G10L19/06 , G10L19/08
CPC分类号： G10L19/09 , G10L19/07 , G10L19/12
摘要： A method, system and program for encoding and decoding speech according to a source-filter model whereby speech is modelled to comprise a source signal filtered by a time-varying filter. The method comprises: receiving a speech signal; and from the speech signal, deriving a spectral envelope signal representing the modelled filter and a remaining signal representing the modelled source. At intervals during the encoding, the method further comprises determining a period between portions of the remaining signal having a degree of repetition and determining a correlation between said portions based on that period, thus producing a respective vector of the correlation for each interval. Once every number of said intervals, the method further comprises selecting a codebook from a plurality of codebooks for quantizing the vectors, quantizing the vectors of that number of intervals according to the selected codebook, and transmitting the quantized vectors along with an indication of the selected codebook.
摘要翻译：一种用于根据源滤波器模型对语音进行编码和解码的方法，系统和程序，由此语音被建模为包括由时变滤波器滤波的源信号。该方法包括：接收语音信号; 并从语音信号中得出表示建模滤波器的频谱包络信号和表示建模源的剩余信号。在编码期间，该方法还包括确定具有重复程度的剩余信号的部分之间的周期，并且基于该周期确定所述部分之间的相关性，从而产生每个间隔的相关矢量。一旦每个所述间隔的数量，该方法还包括从多个码本中选择用于量化矢量的码本，根据所选择的码本量化该数量的间隔的矢量，以及发送量化矢量以及所选择的码本的指示码本。

6. 发明申请

WO2008110867A3 METHOD AND DEVICE FOR REDUCING RINGING IN A FILTER OUTPUT SIGNAL 审中-公开
标题翻译：用于减少滤波器输出信号中的振铃的方法和装置
公开(公告)号：WO2008110867A3
公开(公告)日：2008-11-06
申请号：PCT/IB2007004442
申请日：2007-12-20
申请人： SKYPE LTD , VOS KOEN
发明人： VOS KOEN
IPC分类号： H03H17/02
CPC分类号： H03H17/0219 , H03H17/025 , H03H17/0294 , H03H17/04
摘要： A method for reducing ringing in a signal output from a filter comprising inputting a signal into a filter; filtering a first portion of the input signal to generate a filtered portion of the output signal; analyzing the filtered portion of the output signal; detecting if ringing is present in the filtered portion of the output signal based on said analysis; and adjusting the filter characteristics to reduce ringing in a subsequent filtered portion of the output signal if it is determined that ringing is present.
摘要翻译：一种用于减少从滤波器输出的信号中的振铃的方法，包括将信号输入滤波器; 过滤输入信号的第一部分以产生输出信号的滤波部分; 分析输出信号的滤波部分; 基于所述分析，检测所述输出信号的滤波部分中是否存在振铃; 以及如果确定存在振铃，则调整滤波器特性以减少输出信号的后续滤波部分中的振铃。

7. 发明申请

WO2008102207A3 METHOD OF ESTIMATING NOISE LEVELS IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：通信系统中噪声水平的估算方法
公开(公告)号：WO2008102207A3
公开(公告)日：2008-10-30
申请号：PCT/IB2007004498
申请日：2007-12-20
申请人： SKYPE LTD , VOS KOEN , SORENSEN KARSTEN VANDBORG , BERGENHEIM JON
发明人： VOS KOEN , SORENSEN KARSTEN VANDBORG , BERGENHEIM JON
IPC分类号： G10L21/02 , G10L21/0208 , G10L21/0232
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A method of estimating noise in data containing voice information and noise comprising the steps of receiving the data as a sequence of input values; transforming the data by applying a first non linear mapping to the input values wherein the derivative function of the mapping decreases in magnitude as the input values increase in magnitude smoothing the transformed data; and transforming the smoothed transformed data by applying a second non linear mapping that is opposite to the first non linear mapping, to determine an estimate of the noise in the inputted data.
摘要翻译：一种估计包含语音信息和噪声的数据中的噪声的方法，包括以下步骤：接收作为输入值序列的数据; 通过对输入值应用第一非线性映射来变换数据，其中随着输入值在幅度平滑变换的数据中映射的导数函数在幅度上减小; 以及通过应用与第一非线性映射相反的第二非线性映射来变换平滑的变换数据以确定输入数据中的噪声的估计。

8. 发明申请

WO2008102207A2 METHOD OF ESTIMATING NOISE LEVELS IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中估计噪声水平的方法
公开(公告)号：WO2008102207A2
公开(公告)日：2008-08-28
申请号：PCT/IB2007/004498
申请日：2007-12-20
申请人： SKYPE LIMITED , VOS, Koen , SORENSEN, Karsten, Vandborg , BERGENHEIM, Jon
发明人： VOS, Koen , SORENSEN, Karsten, Vandborg , BERGENHEIM, Jon
IPC分类号： G10L21/02
CPC分类号： G10L21/0208 , G10L21/0232
摘要： A method of estimating noise in data containing voice information and noise comprising the steps of receiving the data as a sequence of input values; transforming the data by applying a first non linear mapping to the input values wherein the derivative function of the mapping decreases in magnitude as the input values increase in magnitude smoothing the transformed data; and transforming the smoothed transformed data by applying a second non linear mapping that is opposite to the first non linear mapping, to determine an estimate of the noise in the inputted data.
摘要翻译：一种在包含语音信息和噪声的数据中估计噪声的方法，包括以下步骤：接收数据作为输入值序列; 通过对输入值应用第一非线性映射来变换数据，其中映射的导数函数随着输入值在幅度上增加而平滑化变换后的数据; 以及通过应用与第一非线性映射相反的第二非线性映射来变换平滑变换的数据，以确定输入数据中噪声的估计。

9. 发明申请

WO2006116024A2 SYSTEMS, METHODS, AND APPARATUS FOR GAIN FACTOR ATTENUATION 审中-公开
标题翻译：系数，方法和设备增益因子衰减
公开(公告)号：WO2006116024A2
公开(公告)日：2006-11-02
申请号：PCT/US2006/014992
申请日：2006-04-21
申请人： QUALCOMM INCORPORATED , VOS, Koen Bernard , KANDHADAI, Ananthapadmanabhan A.
发明人： VOS, Koen Bernard , KANDHADAI, Ananthapadmanabhan A.
IPC分类号： G10L19/04
CPC分类号： G10L19/04 , G10L19/0208 , G10L21/038
摘要： A method of signal processing according to one embodiment includes calculating an envelope of a first signal that is based on a low-frequency portion of a speech signal, calculating an envelope of a second signal that is based on a high-frequency portion of the speech signal, and calculating a plurality of gain factor values according to a time-varying relation between the envelopes of the first and second signal. The method includes attenuating, based on a variation over time of a relation between the envelopes of the first and second signals, at least one of the plurality of gain factor values. In one example, the variation over time of a relation between the envelopes is indicated by at least one distance among the plurality of gain factor values.
摘要翻译：根据一个实施例的信号处理方法包括：计算基于语音信号的低频部分的第一信号的包络，计算基于语音的高频部分的第二信号的包络信号，并且根据第一和第二信号的包络之间的时变关系来计算多个增益因子值。该方法包括基于第一和第二信号的包络之间的关系随时间的变化而衰减多个增益因子值中的至少一个。在一个示例中，信封之间的关系随时间的变化由多个增益因子值中的至少一个距离指示。

10. 发明申请

WO2006107833A1 METHOD AND APPARATUS FOR VECTOR QUANTIZING OF A SPECTRAL ENVELOPE REPRESENTATION 审中-公开
标题翻译：用于矢量量化的光谱包络表示的方法和装置
公开(公告)号：WO2006107833A1
公开(公告)日：2006-10-12
申请号：PCT/US2006/012227
申请日：2006-04-03
申请人： QUALCOMM INCORPORATED , VOS, Koen, Bernard
发明人： VOS, Koen, Bernard
IPC分类号： G10L19/06
CPC分类号： G10L21/0208 , G10L19/0208 , G10L19/038 , G10L19/24 , G10L21/0232 , G10L21/038
摘要： A quantizer according to an embodiment is configured to quantize a smoothed value of an input value (e.g., a vector of line spectral frequencies) to produce a corresponding output value, where the smoothed value is based on a scale factor and a quantization error of a previous output value.
摘要翻译：根据实施例的量化器被配置为量化输入值（例如，线谱频率的矢量）的平滑值以产生相应的输出值，其中平滑值基于比例因子和量化误差以前的输出值。

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