发明授权
- 专利标题： LPC vector quantization apparatus
- 专利标题（中）： LPC矢量量化装置
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申请号： US10416532申请日： 2001-11-29
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公开(公告)号： US07392179B2公开(公告)日： 2008-06-24
- 发明人: Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara , Kazunori Mano , Yusuke Hiwasaki
- 申请人： Kazutoshi Yasunaga , Toshiyuki Morii , Hiroyuki Ehara , Kazunori Mano , Yusuke Hiwasaki
- 申请人地址： JP Osaka JP Tokyo
- 专利权人： Matsushita Electric Industrial Co., Ltd.,Nippon Telegraph and Telephone Corporation
- 当前专利权人： Matsushita Electric Industrial Co., Ltd.,Nippon Telegraph and Telephone Corporation
- 当前专利权人地址： JP Osaka JP Tokyo
- 代理机构： Greenblum & Bernstein, P.L.C.
- 优先权： JP2000-366191 20001130
- 国际申请： PCT/JP01/10425 WO 20011129
- 国际公布： WO02/45077 WO 20020606
- 主分类号： G10L19/12
- IPC分类号： G10L19/12
摘要：
The present invention carries out pre-selection on many LPC codevectors stored in an LSF codebook 101 using a weighted Euclidean distortion as a measure and carries out a full-code selection on the LPC codevectors left after the pre-selection using an amount of distortion in a spectral space as a measure. This makes it possible to improve the quantization performance of the LPC parameter vector quantizer and improve the quality of synthesized speech of the speech coder/decoder.
公开/授权文献
- US20040015346A1 Vector quantizing for lpc parameters 公开/授权日：2004-01-22
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