| 摘要 |
A characteristic-data-extraction unit (13) extracts characteristic data containing changing information from song data, then an impression-data-conversion unit (14) uses a pre-learned hierarchical neural network to convert the characteristic data extracted by the characteristic-data-extraction unit (13) to impression data and stores it together with song data into a song database (15). A song search unit (18) searches the song database (15) based on impression data input from a PC-control unit (19), and outputs the search results to a search-results-output unit (21).
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