发明授权
US06453282B1 Method and device for detecting a transient in a discrete-time audiosignal
有权
用于检测离散时间音频信号中的瞬态的方法和装置
- 专利标题： Method and device for detecting a transient in a discrete-time audiosignal
- 专利标题（中）： 用于检测离散时间音频信号中的瞬态的方法和装置
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申请号： US09424596申请日： 1999-11-24
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公开(公告)号： US06453282B1公开(公告)日： 2002-09-17
- 发明人: Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
- 申请人： Johannes Hilpert , Jürgen Herre , Bernhard Grill , Rainer Buchta , Karlheinz Brandenburg , Heinz Gerhäuser
- 优先权： DE19736669 19970822
- 主分类号： G10L1900
- IPC分类号： G10L1900
摘要：
A method for detecting a transient in a discrete-time audio signal is performed completely in the time domain and includes the step of segmenting the discrete-time audio signal as to generate consecutive segments of the same length with unfiltered discrete-time audio signals. The discrete-time audio signal in a current segment is filtered. Either the energy of the filtered discrete-time audio signal in the current segment is compared with the energy of the filtered discrete-time audio signal in a preceding segment or a current relationship between the energy of the filtered discrete-time audio signal in the current segment and the energy of the unfiltered discrete-time audio signal in the current segment is formed and this current relationship compared with a preceding corresponding relationship. Whether a transient is present in the discrete-time audio signal is detected using one and/or the other of these comparisons.