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公开(公告)号：EP0954909B1
公开(公告)日：2001-08-29
申请号：EP98922620.4
申请日：1998-03-13
发明人： HERRE, Jürgen , GBUR, Uwe , EHRET, Andreas , DIETZ, Martin , TEICHMANN, Bodo , KUNZ, Oliver , BRANDENBURG, Karlheinz, Dr. , GERHÄUSER, Heinz, Dr.
IPC分类号： H04B1/66
CPC分类号： H04B1/665 , G10L19/028
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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公开(公告)号：EP0954909A1
公开(公告)日：1999-11-10
申请号：EP98922620.0
申请日：1998-03-13
发明人： HERRE, Jürgen , GBUR, Uwe , EHRET, Andreas , DIETZ, Martin , TEICHMANN, Bodo , KUNZ, Oliver , BRANDENBURG, Karlheinz, Dr. , GERHÄUSER, Heinz, Dr.
CPC分类号： H04B1/665 , G10L19/028
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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