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

Applicant: SKYPE LTD ,  VOS KOEN BERNARD ,  JENSEN SOREN SKAK

Inventor： VOS KOEN BERNARD ,  JENSEN SOREN SKAK

IPC: G10L19/12 ,  G10L19/09

CPC classification number: G10L19/12 ,  G10L19/09

Abstract: 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.

Abstract translation: 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。

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

Applicant: SKYPE LTD ,  RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  LINDBLOM JONAS ,  VAFIN RENAT ,  ANDERSEN SOREN VANG

Inventor： RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  LINDBLOM JONAS ,  VAFIN RENAT ,  ANDERSEN SOREN VANG

IPC: H04L12/56

CPC classification number: H04L12/6418 ,  H04L12/66 ,  H04L2012/6489

Abstract: 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.

Abstract translation: 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。

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

Applicant: SKYPE LTD ,  RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  ANDERSEN SOREN VANG

Inventor： RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  ANDERSEN SOREN VANG

IPC: H04J3/06

CPC classification number: H04J3/0632 ,  H04L47/10 ,  H04L47/2416 ,  H04L47/283 ,  H04L47/29

Abstract: 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.

Abstract translation: 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。

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

Applicant: SKYPE LTD ,  RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  LINDBLOM JONAS ,  VAFIN RENAT ,  ANDERSEN SOREN VANG

Inventor： RODBRO CHRISTOFFER ,  JENSEN SOREN SKAK ,  LINDBLOM JONAS ,  VAFIN RENAT ,  ANDERSEN SOREN VANG

IPC: H04L12/64

CPC classification number: H04L12/6418 ,  H04L12/66 ,  H04L2012/6489

Abstract: 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.

Abstract translation: 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。