发明授权
US07786372B2 Wind musical instrument with pitch changing mechanism and supporting system for pitch change 有权
风琴乐器具有俯仰变化机构和音调变化的支撑系统

Wind musical instrument with pitch changing mechanism and supporting system for pitch change
摘要:
Three valve assemblies are linked with finger buttons and inserted into a pipe structure of a trumpet for changing the length of air column, and a supporting system assists a player in fingering on the finger buttons; sensors are adhered to the finger buttons so as to supply a detecting signal representative of force exerted on the finger buttons by the player to a controlling unit; when the force exceeds over a threshold, the controlling unit energizes actuators connected to the valve assemblies so as to make the player feel the valve assemblies lightly changed.
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