发明授权
- 专利标题： VERFAHREN ZUM CODIEREN EINES AUDIOSIGNALS
- 专利标题（英）： Method for coding an audio signal
- 专利标题（中）： 方法音频信号编码
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申请号： EP98922620.4申请日： 1998-03-13
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公开(公告)号： EP0954909B1公开(公告)日： 2001-08-29
- 发明人: HERRE, Jürgen , GBUR, Uwe , EHRET, Andreas , DIETZ, Martin , TEICHMANN, Bodo , KUNZ, Oliver , BRANDENBURG, Karlheinz, Dr. , GERHÄUSER, Heinz, Dr.
- 申请人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- 申请人地址： Leonrodstrasse 54 80636 München DE
- 专利权人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- 当前专利权人： FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
- 当前专利权人地址： Leonrodstrasse 54 80636 München DE
- 代理机构： Schoppe, Fritz, Dipl.-Ing.
- 优先权： DE19730130 19970714
- 国际公布： WO9904506 19990128
- 主分类号： H04B1/66
- IPC分类号： H04B1/66
摘要：
The invention relates to a method for coding or de-coding an audio signal combining the advantages of TNS processing and noise substitution. A time discrete audio signal is initially transformed in a frequency range in order to obtain spectral value of the temporal audio signal. A prediction of the spectral values in relation to frequency is subsequently made in order to enable spectral residual values. Areas within the spectral values encompassing spectral values with noise properties are detected . The spectral residual values are noise substituted in the noise areas, whereupon data relating to the noise areas and noise substitution are incorporated into side information pertaining to a coded audio signal.
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