Title:
AUTOMATIC PIANO
Document Type and Number:
Japanese Patent JP3711681
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To reproduce the actions of keys with good accuracy by canceling the load fluctuation by pedals (dampers) while decreasing a memory capacity.
SOLUTION: When the position information detected by a pedal (damper) position sensor 24 is supplied to a driving parameter correcting section 25, the driving parameter correcting section 25 forms correction data HD by referencing the position information. A driving parameter changing direction 26 forms corrected position data KD' by adding the correction data HD to the position data KD of the key. As a result, the target value as a driving parameter is corrected. A key driving section 27 drives a key solenoid 28 in such a manner that the corrected position data KD' and the position data of the key from a key solenoid position sensor 29 coincide. As a result, the actions of the keys are reproduced while the load fluctuation of the pedals (dampers) are canceled.
Inventors:
Yasuhiko Oba
Yuji Fujiwara
Yuji Fujiwara
Application Number:
JP3677197A
Publication Date:
November 02, 2005
Filing Date:
February 20, 1997
Export Citation:
Assignee:
Yamaha Corporation
International Classes:
G10F1/02; G10H1/00; (IPC1-7): G10F1/02; G10H1/00
Domestic Patent References:
| JP6012061A | ||||
| JP8044348A | ||||
| JP6027946A | ||||
| JP5011749A |
Attorney, Agent or Firm:
川▲崎▼ 研二
Tomonori Yamashita
Tomonori Yamashita