Title:
KEYBOARD MUSICAL INSTRUMENT
Document Type and Number:
Japanese Patent JP3661315
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a scale of which the temperament at the time of modulation does not fail, like just intonation, by more approximating a diatonic scale part to the just intonation and enhancing the consonant characteristic of the interval of major third and perfect fifth.
SOLUTION: If the interval obtd. by equally dividing the interval of one octave to 1200 is defined as 1 cent and if the number of the cents of the major second interval is defined as X, the interval 2X of the major third is specified to 279 cents<X≤393 cents. If the diatonic scalar semitone is defined as Y, Y=(1200-5X)/2 is specified. If the interval of the perfect fifth is defined as Z5, Z5=3X+Y is specified. If the interval of the perfect fourth is defined as Z4, Z4=2X+Y is specified. The temperament is thus attained only at the diatonic scale, by which the diatonic scale parts are more approximated to the just intonation.
Inventors:
Junji Fujii
Application Number:
JP30186696A
Publication Date:
June 15, 2005
Filing Date:
November 13, 1996
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
G10B3/12; G10C3/12; G10H1/44; (IPC1-7): G10H1/44; G10B3/12
Domestic Patent References:
| JP8248960A | ||||
| JP7020871A | ||||
| JP7319467A | ||||
| JP60126699A |
Attorney, Agent or Firm:
Masaki Yamakawa
Previous Patent: COVER OPEN/CLOSE DEVICE OF FARM WORK MACHINE
Next Patent: BOTTLE WASHING MACHINE OF UPSTAIRS AND DOWNSTAIRS CONNECTION TYPE
Next Patent: BOTTLE WASHING MACHINE OF UPSTAIRS AND DOWNSTAIRS CONNECTION TYPE