Title: Preliminary data producer, automatic player and musical instrument
Application Number: 200610068213 Application Date: 2006.03.20
Publication Number: 1838228 Publication Date: 2006.09.27
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G10F1/02
Applicant(s) Name: Yamaha Corp. Address:
Inventor(s) Name:
Attorney & Agent: di wankui huang xiaolin
Abstract:
     An automatic player piano is equipped with a preliminary data producer comprising an experimental routine and an editor; a motion controller forces each of the black and white keys to travel on a test trajectory at different values of key velocity so that the black or white key gives rise to rotation of hammer by means of an action unit, and a hammer sensor varies the magnitude of a hammer position signal depending upon the current hammer position; the hammer velocity is converted to a value of MIDI velocity so that a table producer correlates the values of key velocity with the values of MIDI velocity; while an automatic player is performing a music passage, the motion controller exactly determines a value of key velocity on the basis of the relation already determined by the preliminary data producer.
Time: 6
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