发明名称 |
Variable rate vocoder |
摘要 |
<p>A method of speech signal compression, by variable rate coding of frames of digitized speech samples, comprising the steps of: determining a level of speech activity for a frame of digitized speech samples; selecting an encoding rate from a set of rates based upon said determined level of speech activity for said frame; coding said frame according to a coding format of a set of coding formats for said selected rate wherein each rate has a corresponding different coding format and wherein each coding format provides for a different plurality of parameter signals representing said digitized speech samples in accordance with a speech model; and generating for said frame a data packet of said parameter signals. <IMAGE></p> |
申请公布号 |
EP1107231(A2) |
申请公布日期 |
2001.06.13 |
申请号 |
EP20010103640 |
申请日期 |
1992.06.03 |
申请人 |
QUALCOMM INCORPORATED |
发明人 |
JACOBS, PAUL E.;GILHOUSEN, KLEIN S.;GARDENER, WILLIAM R.;LAM, S. KATHERINE;LEE, CHONG U.;TSAI, MING-CHANG |
分类号 |
G10L19/00;G10L;G10L11/02;G10L19/02;G10L19/04;G10L19/06;G10L19/12;G10L19/14;G10L21/02;G10L21/04;H03M7/30;H03M7/36;H04B1/66;H04J3/16;H04L1/00;(IPC1-7):G10L19/00 |
主分类号 |
G10L19/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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