发明名称 |
MUSIC SIGNAL PROCESSING APPARATUS AND METHOD, AND PROGRAM |
摘要 |
A music signal processing apparatus includes a frequency spectrum transform unit, a filter, a frequency feature amount generation unit, and a melody feature amount sequence acquisition unit. The frequency spectrum transform unit is configured to transform a music signal into a frequency spectrum, the music signal being a signal of a musical piece containing a part with a melody. The filter is configured to remove a steep peak of the frequency spectrum. The frequency feature amount generation unit is configured to generate, from a signal output from the filter, a frequency feature amount in which a fundamental frequency component of the part is emphasized. The melody feature amount sequence acquisition unit is configured to acquire, based on the frequency feature amount, a melody feature amount sequence that specifies a fundamental frequency of the part at each time. |
申请公布号 |
US2014337019(A1) |
申请公布日期 |
2014.11.13 |
申请号 |
US201414268015 |
申请日期 |
2014.05.02 |
申请人 |
Sony Corporation |
发明人 |
Tsunoo Emiru |
分类号 |
G10L25/54;G10L25/03;G10L25/90 |
主分类号 |
G10L25/54 |
代理机构 |
|
代理人 |
|
主权项 |
1. A music signal processing apparatus, comprising:
a frequency spectrum transform unit configured to transform a music signal into a frequency spectrum, the music signal being a signal of a musical piece containing a part with a melody; a filter configured to remove a steep peak of the frequency spectrum; a frequency feature amount generation unit configured to generate, from a signal output from the filter, a frequency feature amount in which a fundamental frequency component of the part is emphasized; and a melody feature amount sequence acquisition unit configured to acquire, based on the frequency feature amount, a melody feature amount sequence that specifies a fundamental frequency of the part at each time. |
地址 |
Tokyo JP |