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    • 93. 发明授权
    • Automatic player keyboard musical instrument equipped with key sensors shared between automatic playing system and recording system
    • 自动播放器键盘乐器配备有自动播放系统和录音系统之间共享的按键传感器
    • US06969791B2
    • 2005-11-29
    • US10794054
    • 2004-03-08
    • Yuji Fujiwara
    • Yuji Fujiwara
    • G10F1/02G10G3/04G10H3/06
    • G10F1/02G10G3/04
    • An automatic player piano has various sorts of individuality due to differences in size, design margins applied to the component parts and a difference in electric characteristics of system component parts so that key position signals contain error components due to those sorts of individuality; plural feedback control loops are created between the key sensors and key actuators, and the error components are eliminated from the current key positions through the normalization; even if an original performance is reenacted through the automatic player piano different from that used in the recording, the feedback control loops cause the key actuators to force the keys to move along reference trajectories determined on the basis of the music data codes, whereby the manufacturer makes the key sensors shared between the recording system and the automatic playing system.
    • 自动演奏钢琴由于尺寸差异,组件部分的设计余量和系统组成部分的电气特性不同而具有各种个性,使得键位置信号由于各种个性而含有误差分量; 在键传感器和键致动器之间产生多个反馈控制回路,通过标准化从当前的关键位置消除误差分量; 即使通过与记录中使用的自动播放器钢琴不同的原始演奏,反馈控制循环使得键致动器迫使键沿着基于音乐数据代码确定的参考轨迹移动,由此制造商 使得记录系统和自动播放系统之间共享密钥传感器。