发明名称 Talkodning
摘要 A method of coding a sampled speech signal in which the speech signal is divided into sequential frames. For each current frame, a first set of linear prediction coding (LPC) coefficients are generated, where the number of LPC coefficients depends upon the characteristics of the current frame. If the number of LPC coefficients in the first set of the current frame differs from the number in the first set of the preceding frame, then a second expanded or contracted set of LPC coefficients is generated from the first set of LPC coefficients for the preceding frame. This second set contains the same number of LPC coefficients as are present in said first set of the current frame. Respective sets of line spectral frequency (LSP) coefficients are generated for the first set of LPC coefficients of the current frame and the second set of LPC coefficients of the preceding frame. The sets of LSP coefficients are then combined to provide an encoded residual signal.
申请公布号 FI973873(A0) 申请公布日期 1997.10.02
申请号 FI19970003873 申请日期 1997.10.02
申请人 NOKIA MOBILE PHONES LTD 发明人 OJALA, PASI;LAKANIEMI, ARI;RUOPPILA, VESA T.
分类号 G10L19/04;G10L19/00;G10L19/06;G10L19/12;H03M7/36;(IPC1-7):G10L 主分类号 G10L19/04
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