发明授权
- 专利标题： Apparatus and method applying adaptive spectral whitening in a high-frequency reconstruction coding system
- 专利标题（中）： 在高频重建编码系统中应用自适应频谱白化的装置和方法
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申请号： US11247176申请日： 2005-10-12
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公开(公告)号： US07433817B2公开(公告)日： 2008-10-07
- 发明人: Kristofer Kjörling , Per Ekstrand , Fredrik Henn , Lars Villemoes
- 申请人： Kristofer Kjörling , Per Ekstrand , Fredrik Henn , Lars Villemoes
- 申请人地址： SE Stockholm
- 专利权人： Coding Technologies AB
- 当前专利权人： Coding Technologies AB
- 当前专利权人地址： SE Stockholm
- 代理机构： Glenn Patent Group
- 代理商 Michael A. Glenn
- 优先权： SE0004163 20001114
- 主分类号： G01L19/02
- IPC分类号： G01L19/02
摘要：
The present invention proposes a new method and a new apparatus for enhancement of audio source coding systems utilising high frequency reconstruction (HFR). It utilises adaptive filtering to reduce artifacts due to different tonal characteristics in different frequency ranges of an audio signal upon which HFR is performed. The present invention is applicable to both speech coding and natural audio coding systems.
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