Automatic music playing piano
AssigneeYamaha Corporation
InventorJun Yamamoto
Life of this patent
Estimating the term…
Abstract
The present invention relates to a pedal movement control and recording apparatus for an automatic music playing piano in which the pedal displacement corresponding to sequentially changing pedal control signals is determined in order to generate a pedal position conversion table, and which provides means for generating position data normalization tables and reverse normalization tables, whereby music performed on one piano can be replayed on a second automatic music playing piano, correcting for the unique response characteristics of each piano, thereby preserving nuances of pedal movement during replay.
Claims24
A pedal movement control and recording apparatus for an automatic music playing piano comprising:
- at least one pedal for musical tone control, said pedal having a range of displacement;
- a pedal drive means for driving said pedal;
- a pedal displacement detection means for determining the displacement of said pedal;
- a conversion table creation means for creating a conversion table, in which said conversion table creation means sequentially changes characteristics for a drive signal supplied to said pedal drive means while detecting pedal displacement with said pedal displacement detection means, wherein a position data conversion table is created based on a relationship between the characteristics of said drive signal supplied to said pedal drive means and said pedal displacement detected by said pedal displacement detection means, said conversion table creation means including means for determining a half pedal region in the range of displacement of the pedal corresponding to a change in pedal displacement characteristics;
- and
- control means for receiving recorded performance data for said automatic music playing piano and driving the pedal drive means in response to the performance data and in accordance with the conversion table and said half pedal region.
A pedal movement control and recording apparatus in for an automatic music playing piano comprising at least one pedal for musical tone control, a pedal drive means for driving said pedal, a pedal displacement detection means for determining the displacement of said pedal, and a state judgment means for determining different operating states of said pedal in which pedal displacement characteristics are different in response to the driving of the pedal, wherein said state judgment means sequentially changes characteristics of a drive signal supplied to said pedal drive means while detecting pedal displacement with said pedal displacement detection means, so as to determine the different pedal operating states.
A pedal movement control and recording apparatus for an automatic music playing piano comprising:
- at least one pedal for musical tone control,
- a pedal drive means for driving said pedal,
- a pedal displacement detection means for determining the displacement of said pedal,
- a conversion table creation means for creating a conversion table, in which said conversion table creation means sequentially changes characteristics for a drive signal supplied to said pedal drive means while detecting pedal displacement between maximum and minimum values with said pedal displacement detection means, wherein a position data conversion table is created based on a relationship between the characteristics of said drive signal supplied to said pedal drive means and said pedal displacement detected by said pedal displacement detection means, and said
- control means for receiving recorded performance data for said automatic music playing piano including data representing commanded pedal position with reference to normalized minimum and maximum positions and for providing a drive signal to the pedal drive means in accordance with the commanded pedal position and the conversion table.
A pedal control apparatus for an automatic music playing piano having at least one pedal for a musical tone control, comprising:
- a pedal drive means for driving said pedal;
- a pedal displacement detection means for determining the displacement of said pedal;
- characteristics determining means for determining drive value versus displacement characteristics for said pedal;
- and
- control means for receiving normalized pedal performance data representing desired pedal position between minimum and maximum displacement and converting the normalized data to drive data for said pedal drive means in accordance with the characteristics determined by the characteristics determining means.
A piano system for producing recordings for automatic music playing pianos, comprising:
- a piano having at least one pedal for musical tone control;
- pedal displacement detection means for determining displacement of the pedal;
- pedal characteristics determining means for determining pedal displacement values of the detection means which correspond to at least one of a slack range or a half pedal range of the pedal;
- recording means for recording a musical performance on the piano including means coupled to the detection means for recording pedal displacement during the musical performance;
- and
- converting means for converting the recorded pedal displacement to a normalized recording with reference to the determined slack range or half pedal range so that particular pedal displacement values in the normalized recording positively represent desired slack range or half pedal range operation during reproduction of the normalized recording.
Dependencies are inferred from the claim text.