| 摘要 |
<P>PROBLEM TO BE SOLVED: To highly accurately synchronize display of words and musical scores and reproduction of an acoustic signal. <P>SOLUTION: A storage device 14 stores musical sound data DA designating time series of musical sound composing musical pieces and display data DB designating time series of words of the musical pieces. A first feature extraction part 42 generates a feature amount in each unit section F1 of an acoustic signal P1 supplied from a signal supply device 80. A second feature extraction part 46 generates a feature amount in each unit section F2 of an acoustic signal P2 converting the musical sound data DA. A synchronization analysis part 48 specifies, for the acoustic signal P2, a synchronization section σS resembled by the feature amount in each of a plurality of reference sections σREF dividing the acoustic signal P1 on a time axis. A display control part 60 displays characters designated by the display data DB on a display 72 on the basis of processing result of the synchronization analysis part 48 so as to be synchronized with reproduction of the acoustic signal P1. <P>COPYRIGHT: (C)2011,JPO&INPIT |
