Keyboard musical instrument faithfully reproducing original performance without complicated tuning and music data generating system incorporated therein

摘要

An automatic player piano is an acoustic piano equipped with a data acquisition system and a playback system, and the data acquisition system monitors the hammers with hammer sensors for producing a set of music data codes representative of a performance on the keyboard, wherein the hammer sensor has a detectable range over the trajectory of the associated hammer so that the data acquisition system obtains pieces of music data accurately representative of the trajectory of hammer to be required for a faithful reproduction of the original performance.