Title:
楽曲情報算出装置及び楽曲再生装置
Document Type and Number:
Japanese Patent JP4817388
Kind Code:
B2
Abstract:
A music information calculation apparatus recognizing a structure of a piece of music based on an acoustic signal. The apparatus includes: an acoustic signal input for inputting the acoustic signal of the piece of music; an acoustic parameter calculator for calculating, using the acoustic signal, at least a first acoustic parameter indicating a volume of the piece of music; an inflection degree calculator for calculating, using at least the first acoustic parameter, an inflection degree indicating an inflection of the piece of music; a story node calculator for calculating, using at least the first acoustic parameter, a story node representing a time at which a formation of the piece of music changes; and a story information calculator for calculating, as story information indicating at least a correspondence between the story node having been calculated and the inflection degree obtained at the time represented by the story node.
Inventors:
Junichi Tagawa
Hiroaki Yamane
Hiroaki Yamane
Application Number:
JP2006528621A
Publication Date:
November 16, 2011
Filing Date:
June 24, 2005
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
G10H1/00; G10L25/03; G10L25/09; G10L25/21; G10L25/24; G10L25/51
Domestic Patent References:
| JPH08265660A | 1996-10-11 | |||
| JPH09230857A | 1997-09-05 | |||
| JPH06118982A | 1994-04-28 | |||
| JP2000148107A | 2000-05-26 | |||
| JP2004191780A | 2004-07-08 | |||
| JP2004240077A | 2004-08-26 | |||
| JP2005107335A | 2005-04-21 |
Foreign References:
| US5048390A | 1991-09-17 |
Attorney, Agent or Firm:
Patent business corporation Ogasawara patent office
Shiro Ogasawara
Shiro Ogasawara