US 7,521,626 B2
Automatic player musical instrument, testing system incorporated therein and method for specifying half pedal point
Shigeru Muramatsu, Shizuoka-Ken (Japan)
Assigned to Yamaha Corporation, Shizuoka-Ken (Japan)
Filed on Apr. 16, 2007, as Appl. No. 11/735,515.
Claims priority of application No. 2006-118976 (JP), filed on Apr. 24, 2006.
Prior Publication US 2007/0256550 A1, Nov. 08, 2007
Int. Cl. G10H 1/32 (2006.01)
U.S. Cl. 84—719  [84/626] 20 Claims
OG exemplary drawing
 
1. An automatic player musical instrument for producing tones without a fingering of a human player in an automatic playing, comprising:
a musical instrument including plural manipulators selectively moved for specifying the tones to be produced,
a tone generating system connected to said plural manipulators, and producing said tones specified with the manipulators,
another manipulator connected to said tone generating system, and imparting an effect selected from effects to said tones depending upon a current position of said another manipulator;
an automatic playing system activated for said automatic playing and provided in association with said plural manipulators and said another manipulator so as selectively to move said plural manipulators for specifying said tones and said another manipulator for imparting said effect to said tones; and
a testing system realized through execution of a subroutine program for a testing operation different from another subroutine program for said automatic playing, activated in said testing operation during said execution of said subroutine program for determining a target position of said another manipulator for imparting one of said effects to said tones through an experiment, informing said automatic playing system of said target position for said automatic playing, and including
an exciter giving rise to at least one of said tones through vibrations in said tone generating system,
a driver moving said another manipulator for varying said current position,
a converter converting vibrations expressing said at least one of said tones to pieces of experimental data expressing magnitude of said vibrations varied together with said current position and
an information processor connected to said converter and determining said target position on the basis of at least one point of reflection found in plots expressing relation between said magnitude and said current position.