Musical instrument having a chord detecting function

Details Musical instrument having a chord detecting function Musical instrument having a chord detecting function

1994-07-05

1997-06-24

Martin, David S.

Music

Instruments

Electrical musical tone generation

84637, 84669, G10H 138

Patent

active

056419287

ABSTRACT:
In accordance with one chord detecting approach, a peak value of the number of notes composing performance data is periodically detected for each predetermined time period and a combination of notes corresponding to the detected peak value is extracted as a representative note combination for the period, so that a chord is detected, for each of the predetermined time periods, on the basis of the extracted combination of notes. In accordance with another chord detecting approach, detection is made of a state of notes composing the performance data at each of three specific timings, i.e., predetermined beat timing, preceding timing slightly before the beat timing and succeeding timing slightly after the beat timing in an automatic accompaniment. A chord is detected on the basis of the thus-detected state of notes.

REFERENCES:
patent: 4381689 (1983-05-01), Oya
patent: 4499807 (1985-02-01), Ishida
patent: 4646609 (1987-03-01), Teruo et al.
patent: 5056401 (1991-10-01), Yamaguchi et al.
patent: 5069104 (1991-12-01), Shibukawa
patent: 5179557 (1993-01-01), Kudo
patent: 5202528 (1993-04-01), Iwaooji
patent: 5459281 (1995-10-01), Shibukawa

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