发明授权
US07534951B2 Beat extraction apparatus and method, music-synchronized image display apparatus and method, tempo value detection apparatus, rhythm tracking apparatus and method, and music-synchronized display apparatus and method
失效
节拍提取装置和方法，音乐同步图像显示装置和方法，速度值检测装置，节奏跟踪装置和方法以及音乐同步显示装置和方法
- 专利标题： Beat extraction apparatus and method, music-synchronized image display apparatus and method, tempo value detection apparatus, rhythm tracking apparatus and method, and music-synchronized display apparatus and method
- 专利标题（中）： 节拍提取装置和方法，音乐同步图像显示装置和方法，速度值检测装置，节奏跟踪装置和方法以及音乐同步显示装置和方法
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申请号： US11486359申请日： 2006-07-13
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公开(公告)号： US07534951B2公开(公告)日： 2009-05-19
- 发明人: Kosei Yamashita
- 申请人： Kosei Yamashita
- 申请人地址： JP Tokyo
- 专利权人： Sony Corporation
- 当前专利权人： Sony Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Wolf, Greenfield & Sacks, P.C.
- 优先权： JP2005-216786 20050727
- 主分类号： G10H3/00
- IPC分类号： G10H3/00
摘要：
A music-synchronized display apparatus includes a beat extractor configured to detect a portion in which a power spectrum in a spectrogram of an input music signal greatly changes and to output a detection output signal that is synchronized in time to the changing portion in synchronization with the input music signal; a tempo value estimation section configured to detect the self-correlation of the detection output signal from the beat extractor and to estimate a tempo value of the input music signal; a variable frequency oscillator in which an oscillation center frequency is determined on the basis of the tempo value from the tempo value estimation section and the phase of the output oscillation signal is controlled on the basis of a phase control signal; a phase comparator; a beat synchronization signal generation and output section; an attribute information storage section; an attribute information obtaining section; and a display information generator.
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