公开(公告)号：EP2384505A1

公开(公告)日：2011-11-09

申请号：EP10700156.2

申请日：2010-01-05

申请人： Skype Limited

发明人： VOS, Koen, Bernard ,  SORENSEN, Karsten, Vandborg ,  JENSEN, Soren, Skak

IPC分类号： G10L19/06

CPC分类号： G10L19/07 ,  G10L19/06 ,  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.

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，由此语音被建模以包括由时变滤波器滤波的源信号。 该方法包括：对于语音信号的多个帧中的每一个，接收包括连续帧的语音信号，导出该帧的第一部分的第一线谱频率向量，以及用于第二部分的第二线谱频率向量 并且基于第一和第二线谱频率矢量以及对于前一帧的发射线谱频率矢量确定发射线谱频率矢量和内插因子。