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1. 发明申请

WO2008114083A3 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114083A3
公开(公告)日：2009-04-09
申请号：PCT/IB2007003979
申请日：2007-12-20
申请人： SKYPE LTD , RODBRO CHRISTOFFER , JENSEN SOREN SKAK , ANDERSEN SOREN VANG
发明人： RODBRO CHRISTOFFER , JENSEN SOREN SKAK , ANDERSEN SOREN VANG
IPC分类号： H04J3/06
CPC分类号： H04J3/0632 , H04L47/10 , H04L47/2416 , H04L47/283 , H04L47/29
摘要： A method of transmitting over a network a signal comprising a plurality of data elements the method comprising; receiving the signal at a terminal; determining a transmission delay of at least one data element; estimating a first component of the transmission delay; determining a second component of the transmission delay by removing the first component of the transmission delay from the transmission delay; and determining a receiver delay to be applied between receiving at the terminal and outputting from the terminal one of said plurality of data elements, in dependence on the second component of the transmission delay.
摘要翻译：一种通过网络发送包括多个数据元素的信号的方法，所述方法包括：在终端接收信号; 确定至少一个数据元素的传输延迟; 估计传输延迟的第一分量; 通过从传输延迟中去除传输延迟的第一分量来确定传输延迟的第二分量; 以及根据所述传输延迟的所述第二分量，确定在所述终端接收之间并且从所述多个数据元素中的一个输出端口之间应用的接收机延迟。

2. 发明专利

BRPI0721454A2 未知
公开(公告)号：BRPI0721454A2
公开(公告)日：2014-06-24
申请号：BRPI0721454
申请日：2007-12-20
申请人： SKYPE LTD
发明人： RODBRO CHRISTOFFER , JENSEN SOREN SKAK , ANDERSEN SOREN VANG
IPC分类号： H04J3/06
摘要： A method of transmitting over a network a signal comprising a plurality of data elements the method comprising; receiving the signal at a terminal; determining a transmission delay of at least one data element; estimating a first component of the transmission delay; determining a second component of the transmission delay by removing the first component of the transmission delay from the transmission delay; and determining a receiver delay to be applied between receiving at the terminal and outputting from the terminal one of said plurality of data elements, in dependence on the second component of the transmission delay.

3. 发明专利

AT532281T 未知
公开(公告)号：AT532281T
公开(公告)日：2011-11-15
申请号：AT07872829
申请日：2007-12-20
申请人： SKYPE LTD
发明人： RODBRO CHRISTOFFER ASGAARD , JENSEN SOREN SKAK , ANDERSEN SOREN VANG
IPC分类号： H04J3/06
摘要： A method of transmitting over a network a signal comprising a plurality of data elements the method comprising; receiving the signal at a terminal; determining a transmission delay of at least one data element; estimating a first component of the transmission delay; determining a second component of the transmission delay by removing the first component of the transmission delay from the transmission delay; and determining a receiver delay to be applied between receiving at the terminal and outputting from the terminal one of said plurality of data elements, in dependence on the second component of the transmission delay.

4. 发明专利

GB2466670B Speech encoding 未知
公开(公告)号：GB2466670B
公开(公告)日：2012-11-14
申请号：GB0900140
申请日：2009-01-06
申请人： SKYPE
发明人： VOS KOEN , SORENSEN KARSTEN VANDBORG , JENSEN SOREN SKAK
IPC分类号： G10L19/00 , G10L19/02 , G10L19/06 , G10L19/07 , G10L25/24
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 comprising successive frames, for each of a plurality of frames of the speech signal, deriving a first line spectral frequency vector for a first portion of the frame, and a second line spectral frequency vector for a second portion of the frame, and determining a transmit line spectral frequency vector and an interpolation factor based on the first and second line spectral frequency vectors, and on the transmit line spectral frequency vector for a preceding one of the frames.

5. 发明专利

GB2476041A Soft transition between the audio bandwidth of a signal before and after a switch in sampling rate 未知
公开(公告)号：GB2476041A
公开(公告)日：2011-06-15
申请号：GB0921462
申请日：2009-12-08
申请人： SKYPE LTD
发明人： STROMMER STEFAN , SORENSEN KARSTEN VANDBORG , JENSEN SOREN SKAK , VOS KOEN , BERGENHEIM JON
IPC分类号： G10L19/24 , G10L19/26 , G10L21/02
摘要： A method and apparatus for transmitting an audio signal over a communication channel comprising encoding the audio signal with an encoder 204 using a first sampling rate, filtering the audio signal using a first cut off frequency, the first cut off frequency being chosen in dependence upon the first sampling rate, and transmitting the encoded and filtered audio signal over the communication channel. The presence of a condition in which the sampling rate of the encoder 204 is to be switched to a second sampling rate at a switching time is determined and if the condition has been determined to be present, the cut off frequency used in the filtering step is gradually changed from the first cut off frequency to a second cut off frequency, the second cut off frequency being chosen in dependence upon the second sampling rate, such that the audio bandwidth of the transmitted signal changes gradually when the sampling rate is switched to the second sampling rate.

6. 发明专利

GB2466672B Speech coding 未知
公开(公告)号：GB2466672B
公开(公告)日：2013-03-13
申请号：GB0900142
申请日：2009-01-06
申请人： SKYPE
发明人： VOS KOEN , JENSEN SOREN SKAK
IPC分类号： G10L19/08 , G10L19/09 , G10L19/10 , G10L19/12 , G10L25/00 , G10L25/90
摘要： A method, system and computer program for encoding speech according to a source-filter model. The method comprises deriving a spectral envelope signal representative of a modelled filter and a first remaining signal representative of a modelled source signal, and deriving a second remaining signal from the first remaining signal by, at intervals during the encoding: exploiting a correlation between approximately periodic portions in the first remaining signal to generate a predicted version of a later portion from a stored version of an earlier portion, and using the predicted-version of the later portion to remove an effect of said periodicity from the first remaining signal. The method further comprises, once every number of intervals, transforming the stored version of the earlier portion of the first remaining signal prior to generating the predicted version of the respective later portion.

7. 发明申请

WO2008114084A2 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114084A2
公开(公告)日：2008-09-25
申请号：PCT/IB2007004443
申请日：2007-12-20
申请人： SKYPE LTD , RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
发明人： RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
IPC分类号： H04L12/56
CPC分类号： H04L12/6418 , H04L12/66 , H04L2012/6489
摘要： A method of processing a signal received at a node in a network, comprising the steps of; receiving the signal at the node; determining characteristics of a first part of the signal; determining characteristics of a second part of the signal that is subsequent to the first part of the signal; quantifying an effect on the signal caused by applying an action to the first part of the signal, based on characteristics of the first part of the signal; quantifying an effect on the signal caused by not applying the action on the first part of the signal, based on characteristics of the second part of the signal; applying the action to the first part of the signal if it is determined that the effect on the signal caused by applying the action to the first part of the signal is less detrimental to at least one measure of the signal quality than the effect on the signal caused by not applying the action to the first part of the signal.
摘要翻译：一种处理在网络中的节点处接收的信号的方法，包括以下步骤：在节点处接收信号; 确定信号的第一部分的特性; 确定信号的第一部分之后的信号的第二部分的特性; 基于信号的第一部分的特性量化对信号施加动作所引起的对信号的影响; 基于信号的第二部分的特性量化对不对信号的第一部分施加动作而引起的信号的影响; 如果确定通过对信号的第一部分施加动作而对信号产生的影响对信号质量的至少一个度量的影响比对信号的影响更小，则将该动作应用于信号的第一部分由于不对信号的第一部分采取行动造成的。

8. 发明专利

GB2499505A Speech signal decoding 未知
公开(公告)号：GB2499505A
公开(公告)日：2013-08-21
申请号：GB201300715
申请日：2013-01-15
申请人： SKYPE
发明人： VOS KOEN , JENSEN SOREN SKAK
IPC分类号： G10L19/12
摘要： A received speech signal encoded according to a source filter model is decoded by determining a spectral envelope signal, and deriving a remaining signal representative of the modelled filter comprising successive periodic portions by, at intervals, determining correlation between the periodic portions and predicting later portions based on stored versions of earlier portions. The remaining signal is then reconstructed and a decoded speech signal generated. The stored version of the earlier portions is also, at intervals, transformed prior to generating the predictions.

9. 发明申请

WO2010079167A4 SPEECH CODING 审中-公开
标题翻译：语音编码
公开(公告)号：WO2010079167A4
公开(公告)日：2010-10-14
申请号：PCT/EP2010050057
申请日：2010-01-05
申请人： SKYPE LTD , VOS KOEN BERNARD , JENSEN SOREN SKAK
发明人： VOS KOEN BERNARD , JENSEN SOREN SKAK
IPC分类号： G10L19/12 , G10L19/09
CPC分类号： G10L19/12 , G10L19/09
摘要： A method, system and computer program for encoding speech according to a source-filter model. The method comprises deriving a spectral envelope signal representative of a modelled filter and a first remaining signal representative of a modelled source signal, and deriving a second remaining signal from the first remaining signal by, at intervals during the encoding: exploiting a correlation between approximately periodic portions in the first remaining signal to generate a predicted version of a later portion from a stored version of an earlier portion, and using the predicted version of the later portion to remove an effect of said periodicity from the first remaining signal. The method further comprises, once every number of intervals, transforming the stored version of the earlier portion of the first remaining signal prior to generating the predicted version of the respective later portion.
摘要翻译：一种根据源滤波器模型对语音进行编码的方法，系统和计算机程序。该方法包括导出表示建模过滤器的频谱包络信号和表示建模源信号的第一剩余信号，以及在编码期间间隔从第一剩余信号导出第二剩余信号：利用近似周期性的相关性第一剩余信号中的部分，以从较早部分的存储版本生成稍后部分的预测版本，并且使用稍后部分的预测版本来从第一剩余信号中去除所述周期性的影响。该方法还包括：每产生一次间隔之后，在生成相应较后部分的预测版本之前变换第一剩余信号的较早部分的存储版本。

10. 发明申请

WO2008114084A3 METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中传输数据的方法
公开(公告)号：WO2008114084A3
公开(公告)日：2008-12-24
申请号：PCT/IB2007004443
申请日：2007-12-20
申请人： SKYPE LTD , RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
发明人： RODBRO CHRISTOFFER , JENSEN SOREN SKAK , LINDBLOM JONAS , VAFIN RENAT , ANDERSEN SOREN VANG
IPC分类号： H04L12/64
CPC分类号： H04L12/6418 , H04L12/66 , H04L2012/6489
摘要： A method of processing a signal received at a node in a network, comprising the steps of; receiving the signal at the node; determining characteristics of a first part of the signal; determining characteristics of a second part of the signal that is subsequent to the first part of the signal; quantifying an effect on the signal caused by applying an action to the first part of the signal, based on characteristics of the first part of the signal; quantifying an effect on the signal caused by not applying the action on the first part of the signal, based on characteristics of the second part of the signal; applying the action to the first part of the signal if it is determined that the effect on the signal caused by applying the action to the first part of the signal is less detrimental to at least one measure of the signal quality than the effect on the signal caused by not applying the action to the first part of the signal.
摘要翻译：一种处理在网络中的节点处接收的信号的方法，包括以下步骤：在节点处接收信号; 确定所述信号的第一部分的特性; 确定信号的第一部分之后的信号的第二部分的特性; 基于所述信号的所述第一部分的特性来量化由于对所述信号的所述第一部分应用动作而引起的对所述信号的影响; 基于所述信号的所述第二部分的特性，量化由于未对所述信号的所述第一部分应用所述动作而导致的对所述信号的影响; 如果确定对信号的第一部分施加动作对信号的影响对信号质量的至少一个测量的影响比对信号的影响的影响更小，则将该动作应用于信号的第一部分由于未将动作应用于信号的第一部分而导致。

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