发明申请
US20070276655A1 Method and apparatus to search fixed codebook and method and apparatus to encode/decode a speech signal using the method and apparatus to search fixed codebook
失效
使用该方法和装置搜索固定码本的方法和装置，用于搜索固定码本和方法和装置来对语音信号进行编码/解码
- 专利标题： Method and apparatus to search fixed codebook and method and apparatus to encode/decode a speech signal using the method and apparatus to search fixed codebook
- 专利标题（中）： 使用该方法和装置搜索固定码本的方法和装置，用于搜索固定码本和方法和装置来对语音信号进行编码/解码
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申请号： US11709255申请日： 2007-02-22
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公开(公告)号： US20070276655A1公开(公告)日： 2007-11-29
- 发明人: Kangeun Lee , Eunmi Oh , Hosang Sung , Changyong Son , Kihyun Choo , Junghoe Kim
- 申请人： Kangeun Lee , Eunmi Oh , Hosang Sung , Changyong Son , Kihyun Choo , Junghoe Kim
- 申请人地址： KR Suwon-si
- 专利权人： Samsung Electronics Co., Ltd
- 当前专利权人： Samsung Electronics Co., Ltd
- 当前专利权人地址： KR Suwon-si
- 优先权： KR2006-47118 20060525
- 主分类号： G06F15/00
- IPC分类号： G06F15/00 ; G06F17/28 ; G11B11/00
摘要：
A method and an apparatus to encode and decode a speech signal using a code excited linear prediction (CELP) algorithm. In order to reduce a bit rate without degrading performance in an enhancement layer based on CELP, each of a fixed codebook of a core layer and a fixed codebook of the enhancement layer is divided into a plurality of spaces. The spaces of the fixed codebook of the enhancement layer excludes a space corresponding to a least distorted space determined from among the spaces of the fixed codebook of the core layer are searched.
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