Chord estimation apparatus and method

Details Chord estimation apparatus and method Chord estimation apparatus and method

2007-06-11

2008-08-12

Donels, Jeffrey (Department: 2837)

Music

Instruments

Electrical musical tone generation

Reexamination Certificate

active

07411125

ABSTRACT:
A chord estimation apparatus includes: frequency-component extraction means for extracting a frequency component from an input music signal; scale-component information generation means for mapping the frequency component extracted by the frequency-component extraction means onto each tone and generating scale-component information including each tone and loudness thereof; folding means for folding the scale-component information generated by the scale-component information generation means for each two octaves to generate scale-component information including 24 tones; and chord estimation means for inputting the scale-component information including 24 tones into a Bayesian network in order to estimate a chord.

REFERENCES:
patent: 6057502 (2000-05-01), Fujishima
patent: 2007/0095197 (2007-05-01), Kobayashi et al.
patent: 2007/0112558 (2007-05-01), Kobayashi
patent: 2000-298475 (2000-10-01), None
Randal J. Leistikow et al., “Bayesian Identification of Closely-Spaced Chords from Single-Frame STFT Peaks.”, Proc. of the 7thInt. Conference on Digital Audio Effects (DAFx'04), Oct. 5-8, 2004.

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