Music information calculation apparatus and music...

Details Music information calculation apparatus and music... Music information calculation apparatus and music...

2005-06-24

2008-11-04

Donels, Jeffrey (Department: 2837)

Music

Instruments

Electrical musical tone generation

C084S649000, C084S650000, C084S653000, C084S654000, C084S658000, C084S663000, C084S665000, C084S666000

Reexamination Certificate

active

07446252

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.

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