Patent ID: 7514627

Claim:
A hybrid keyboard musical instrument comprising: an acoustic musical instrument including a cabinet including a common reference member providing centers of rotation and having a fore-and-aft direction, a lateral direction crossing said fore-and-aft direction at right angle and an up-and-down direction normal to a plane defined by said fore-and-aft direction and said lateral direction, link works independently actuated in a performance for specifying the pitch of tones to be produced and respectively having hammers supported by said common reference member so as to be rotated about said centers of rotation of said common reference member, and a tone generator energized through said hammers, so as to produce said tones at said pitch specified through the actuated link works in cooperation with said hammers; an electric system including a sensor unit having a framework supported by said common reference member and sensors supported by said framework and converting a physical quantity expressing the motion of said hammers to detecting signals, and a data processor connected to said sensors and producing pieces of music data through an analysis on said physical quantity; and plural locators provided on said common reference member, and engaged with said framework so as to locate said sensors at target relative positions in the vicinity of said centers of rotation with respect to said certain links independently determined in at least said fore-and-aft direction and said up-and-down direction.