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    • 1. 发明申请
    • SPEECH CODING
    • 语音编码
    • WO2010079167A1
    • 2010-07-15
    • PCT/EP2010/050057
    • 2010-01-05
    • SKYPE LIMITEDVOS, Koen BernardJENSEN, Soren Skak
    • VOS, Koen BernardJENSEN, Soren Skak
    • G10L19/12
    • G10L19/12G10L19/09
    • 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.
    • 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:导出表示建模滤波器的频谱包络信号和表示建模源信号的第一剩余信号,并且通过在编码期间的间隔导出来自第一剩余信号的第二剩余信号:利用近似周期性 第一剩余信号中的一些部分,以从先前部分的存储版本产生后一部分的预测版本,以及使用后一部分的预测版本从第一剩余信号中去除所述周期性的影响。 该方法进一步包括在每个数量的间隔一次之后,在产生相应后期部分的预测版本之前,变换第一个剩余信号的较早部分的存储版本。
    • 6. 发明公开
    • METHOD OF TRANSMITTING DATA IN A COMMUNICATION SYSTEM
    • 在通信系统中传输数据的方法
    • EP2140637A2
    • 2010-01-06
    • EP07870467.3
    • 2007-12-20
    • Skype Limited
    • RODBRO, ChristofferJENSEN, Soren SkakLINDBLOM, JonasVAFIN, RenatANDERSEN, Soren Vang
    • H04L12/64
    • H04L12/6418H04L12/66H04L2012/6489
    • 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.
    • 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。
    • 7. 发明公开
    • SPEECH CODING
    • 语音编码
    • EP2384508A1
    • 2011-11-09
    • EP10704769.8
    • 2010-01-05
    • Skype Limited
    • VOS, Koen BernardJENSEN, Soren Skak
    • G10L19/12
    • G10L19/12G10L19/09
    • 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.
    • 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:导出表示建模滤波器的频谱包络信号和表示建模源信号的第一剩余信号,并且通过在编码期间的间隔导出来自第一剩余信号的第二剩余信号:利用近似周期性 第一剩余信号中的一些部分,以从先前部分的存储版本产生后一部分的预测版本,以及使用后一部分的预测版本从第一剩余信号中去除所述周期性的影响。 该方法还包括在每个数量的间隔一次之后,在生成相应后面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。