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1. 发明申请

WO2007119221A2 METHOD AND APPARATUS FOR EXTRACTING MUSICAL SCORE FROM A MUSICAL SIGNAL 审中-公开
标题翻译：从音乐信号中提取乐谱的方法和设备
公开(公告)号：WO2007119221A2
公开(公告)日：2007-10-25
申请号：PCT/IB2007051378
申请日：2007-04-17
申请人： KONINKL PHILIPS ELECTRONICS NV , PHILIPS CORP , SINGH PRANAV , KRISHNAN SRIRAM
发明人： SINGH PRANAV , KRISHNAN SRIRAM
IPC分类号： G10H1/00
CPC分类号： G10H1/00 , G10H7/10 , G10H2210/066 , G10H2210/086
摘要： The present invention provides a system and a method for extracting musical note sequence from a musical signal by incorporating music theory and instrument knowledge. The method includes receiving a replica of a musical signal, identifying musical notes and instrument frequency envelopes of the musical signal by means of spectral analysis and an adaptive knowledgebase, generating a subtractive signal based on the musical notes and instrument frequency envelopes, and subtracting the subtractive signal from the replica of the musical signal. The note-sequence extracted from music signals is used to mine a music database significantly improving search and similarity calculation. The method of present invention provides printable musical score of the musical signal which includes staff and tablature notations with beamed notes, dynamic marks, ornaments, velocity marks and accidentals.
摘要翻译：本发明提供了一种通过结合音乐理论和乐器知识从音乐信号中提取音符序列的系统和方法。该方法包括接收音乐信号的复制品，通过频谱分析和自适应知识库识别音乐信号的音符和乐器频率包络，基于音符和乐器频率包络生成相减信号，并将该相减来自音乐信号复制品的信号。从音乐信号中提取的音符序列用于挖掘音乐数据库，显着改善搜索和相似度计算。本发明的方法提供了音乐信号的可打印乐谱，其包括带有横向音符，动态标记，装饰物，速度标记和偶然事件的工作人员和制表符记符号。

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