发明申请
- 专利标题： SUBBAND CODING APPARATUS AND METHOD OF CODING SUBBAND
- 专利标题（中）： 子带编码装置和编码子带的方法
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申请号： US12095548申请日： 2006-11-29
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公开(公告)号： US20100228541A1公开(公告)日： 2010-09-09
- 发明人: Masahiro Oshikiri
- 申请人： Masahiro Oshikiri
- 申请人地址： JP Osaka
- 专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
- 当前专利权人地址： JP Osaka
- 优先权： JP2005-347342 20051130
- 国际申请： PCT/JP2006/323841 WO 20061129
- 主分类号： G10L19/02
- IPC分类号： G10L19/02
摘要：
A subband coding apparatus carries out subband coding which prevents deterioration in coding performance and improves audio quality of decoded signals. The subband coding apparatus includes a low-band coding section (103) to code a low-band spectrum (S13). A low-band decoding section (106) decodes a low-band coded data (S14) and outputs a decoded low-band spectrum (S18) to a high-band coding section (107). A spectrum rearranging section (105) rearranges to make each frequency component of a high-band spectrum (S16) in reverse order on the frequency axis and outputs a modified high-band spectrum (S17) after rearranging to a high-band coding section (107). The high-band coding section (107) uses the decoded low-band spectrum (S18) output from the low-band decoding section (106) to code the modified high-band spectrum (S17) output from the spectrum rearranging section (105).
公开/授权文献
- US08103516B2 Subband coding apparatus and method of coding subband 公开/授权日：2012-01-24
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