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1. 发明授权

EP1443497B1 Audio signal quality assessment method 有权
标题翻译：一种用于确定音频信号的质量的方法
公开(公告)号：EP1443497B1
公开(公告)日：2008-03-12
申请号：EP03250361.7
申请日：2003-01-21
申请人： Psytechnics Ltd
发明人： Reynolds, Richard , Broom, Simon , Barrett, Paul
IPC分类号： G10L19/00
CPC分类号： G10L25/69

2. 发明公开

EP1443497A1 Audio signal quality assessment method 有权
标题翻译： Verfahren zurQualitätsbestimmungeines Audiosignals
公开(公告)号：EP1443497A1
公开(公告)日：2004-08-04
申请号：EP03250361.7
申请日：2003-01-21
申请人： Psytechnics Ltd
发明人： Reynolds, Richard , Broom, Simon , Barrett, Paul
IPC分类号： G10L19/00
CPC分类号： G10L25/69
摘要： This invention relates to a non-intrusive speech quality assessment system. The invention provides a method and apparatus for storing a sequence of intercepted packets associated with a call, each packet containing speech data, and an indication of a transmission time of said packet; storing with each intercepted packet an indication of an intercept time of said packet; extracting a set of parameters from said sequence of packets; and generating an estimated mean opinion score in dependence upon said set of parameters; wherein the extracting step comprises the sub steps of: generating a jitter parameter for each of a sequence of stored packets in dependence upon the difference between the transmission time of a stored packet and the transmission time of a preceding stored packet of the sequence; and the difference between the intercept time of said stored packet and the intercept time of said preceding packet; and generating a consecutive positive jitter parameter for said stored packet in dependence upon the polarity of said jitter parameter for said stored packet and the polarity of said jitter parameter for any preceding stored packets.
摘要翻译：本发明涉及非入侵语音质量评估系统。本发明提供了一种用于存储与呼叫相关联的被拦截的分组的序列的方法和装置，每个包含语音数据的分组以及所述分组的传输时间的指示; 与每个截取的分组一起存储所述分组的截取时间的指示; 从所述分组序列中提取一组参数; 以及根据所述一组参数产生估计平均意见得分; 其中所述提取步骤包括以下子步骤：根据存储的分组的传输时间与所述序列的先前存储的分组的传输时间之间的差异，为所存储的分组序列中的每一个生成抖动参数; 以及所述存储分组的截取时间与所述前一分组的截取时间之间的差; 以及根据所述存储的分组的所述抖动参数的极性以及任何先前存储的分组的所述抖动参数的极性，为所述存储的分组生成连续的正抖动参数。

3. 发明授权

EP1720287B1 Packet filtering 有权
标题翻译：过滤数据包
公开(公告)号：EP1720287B1
公开(公告)日：2008-06-25
申请号：EP06113280.9
申请日：2006-04-28
申请人： Psytechnics Ltd
发明人： Barrett, Paul
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L45/00 , H04L43/12

4. 发明公开

EP1918909A1 Sampling error compensation 有权
标题翻译：采样误差补偿
公开(公告)号：EP1918909A1
公开(公告)日：2008-05-07
申请号：EP06123492.8
申请日：2006-11-03
申请人： Psytechnics Ltd
发明人： Barrett, Paul , Malfait, Ludovic
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/09 , G10L25/69
摘要： This invention relates to generation of a sample error coefficient suitable for use in an audio signal quality assessment system. The invention provides a method of determining a sample error coefficient between a first signal and a similar second signal comprising the steps of: determining a first periodicity measure from the first signal; determining a second periodicity measure from the second signal; generating a ratio in dependence upon said first periodicity measure and said second periodicity measure; and determining a sampling rate error coefficient in dependence upon said ratio.
摘要翻译：本发明涉及适合用于音频信号质量评估系统的样本误差系数的产生。本发明提供了一种确定第一信号和相似的第二信号之间的采样误差系数的方法，包括以下步骤：从第一信号确定第一周期性测量; 从第二信号确定第二周期性测量; 根据所述第一周期性测量和所述第二周期性测量产生比率; 并根据所述比率确定采样率误差系数。

5. 发明授权

EP1441329B1 Audio signal quality assessment method and apparatus 有权
标题翻译：用于确定音频信号的质量的方法和装置
公开(公告)号：EP1441329B1
公开(公告)日：2009-09-09
申请号：EP03250365.8
申请日：2003-01-21
申请人： Psytechnics Ltd
发明人： Reynolds, Richard , Broom, Simon , Barrett, Paul
IPC分类号： G10L19/00
CPC分类号： G10L25/69

6. 发明公开

EP1720287A1 Packet filtering 有权
标题翻译：冯·帕克特恩
公开(公告)号：EP1720287A1
公开(公告)日：2006-11-08
申请号：EP06113280.9
申请日：2006-04-28
申请人： Psytechnics Ltd
发明人： Barrett, Paul
IPC分类号： H04L12/26 , H04L12/56
CPC分类号： H04L45/00 , H04L43/12
摘要： This invention relates to a method and apparatus for filtering network packets (12). The method comprises a method of filtering a packet (12) in a packet switched network in which two complementary packets (12,14) are transmitted in opposite directions between a particular source and a particular destination comprising the steps of: a) selecting a complementary portion of the source and destination address of said packet (40); b) performing a commutative operation on said complementary portion (42); and c) processing or discarding the packet in dependence upon the results of said commutative operation (48).
摘要翻译：本发明涉及一种过滤网络包（12）的方法和装置。该方法包括对分组交换网络中的分组（12）进行过滤的方法，其中两个互补分组（12,14）在特定源和特定目的地之间以相反方向发送，包括以下步骤：a）选择互补所述分组（40）的源和目的地地址的一部分; b）在所述互补部分（42）上进行交换操作; 以及c）根据所述交换操作的结果来处理或丢弃所述分组（48）。

7. 发明授权

EP2043278B1 Signal processing 有权
标题翻译：信号处理
公开(公告)号：EP2043278B1
公开(公告)日：2013-03-20
申请号：EP07117264.7
申请日：2007-09-26
申请人： Psytechnics Ltd
发明人： Malfait, Ludo , Barrett, Paul , Whitefield, Andrew
IPC分类号： H04B3/46
CPC分类号： H04B3/493

8. 发明授权

EP1918909B1 Sampling error compensation 有权
标题翻译：采样误差补偿
公开(公告)号：EP1918909B1
公开(公告)日：2010-07-07
申请号：EP06123492.8
申请日：2006-11-03
申请人： Psytechnics Ltd
发明人： Barrett, Paul , Malfait, Ludovic
IPC分类号： G10L19/00 , G10L21/04
CPC分类号： G10L21/04 , G10L19/09 , G10L25/69
摘要： This invention relates to generation of a sample error coefficient suitable for use in an audio signal quality assessment system. The invention provides a method of determining a sample error coefficient between a first signal and a similar second signal comprising the steps of: determining a first periodicity measure from the first signal; determining a second periodicity measure from the second signal; generating a ratio in dependence upon said first periodicity measure and said second periodicity measure; and determining a sampling rate error coefficient in dependence upon said ratio.

9. 发明公开

EP2043278A1 Signal processing 有权
标题翻译： Signalverarbeitung
公开(公告)号：EP2043278A1
公开(公告)日：2009-04-01
申请号：EP07117264.7
申请日：2007-09-26
申请人： Psytechnics Ltd
发明人： Malfait, Ludo , Barrett, Paul , Whitefield, Andrew
IPC分类号： H04B3/46
CPC分类号： H04B3/493
摘要： The present invention relates to detection of echo in telecommunications networks. The invention provides a method of echo detection comprising the steps of: generating a series of inbound vectors for an inbound signal; generating a series of outbound vectors for an outbound signal; repeating a predetermined number of comparison steps comprising the sub-steps of selecting an outbound vector from the outbound vectors; selecting an inbound vector from the inbound vectors; comparing said outbound vector with said inbound vector and with successive inbound vectors to generate a plurality of similarity metrics; and determining a relative position of the compared outbound vector having maximum correlation with said inbound vector; and counting the number of times each relative position is determined to be the position of maximum correlation.
摘要翻译：本发明涉及电信网络中的回波检测。本发明提供了一种回波检测方法，包括以下步骤：产生入站信号的一系列入站向量; 生成出站信号的一系列出站向量; 重复预定数量的比较步骤，包括从出站向量中选择出站向量的子步骤; 从入站向量中选择入站向量; 将所述出站向量与所述入站向量和连续入站向量进行比较以生成多个相似性度量; 以及确定与所述入站向量具有最大相关性的所述比较出站向量的相对位置; 并计算每个相对位置被确定为最大相关位置的次数。

10. 发明公开

EP1968235A1 Method of data analysis in a packet switched network 审中-公开
标题翻译：在einem paketvermittelten Netzwerk的Verfahren zur Datenanalyse
公开(公告)号：EP1968235A1
公开(公告)日：2008-09-10
申请号：EP07103512.5
申请日：2007-03-05
申请人： Psytechnics Ltd
发明人： Barrett, Paul
IPC分类号： H04L12/24 , H04L12/26
CPC分类号： H04L43/062 , H04L41/14 , H04L43/026 , H04L43/0847
摘要： This invention relates to an apparatus and method for analysis of packet media streams. In particular for analysis of media streams from different network monitoring points where it is desirable to compare analysis of a particular media packet stream from different monitoring points in the network. The invention provides a method for generating a report relating to a stream of packets in a packet switched network from a monitoring point in said network, comprising the step of: generating a signature from a plurality of packets in said stream; and in which said report includes said signature.
摘要翻译：本发明涉及分组媒体流的分析装置和方法。特别是用于分析来自不同网络监控点的媒体流，其中期望比较来自网络中不同监控点的特定媒体分组流的分析。本发明提供了一种用于从所述网络中的监控点生成与分组交换网络中的分组流有关的报告的方法，包括以下步骤：从所述流中的多个分组生成签名; 并且所述报告包括所述签名。

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