Music note position detection apparatus, electronic musical instrument, music note position detection method and storage medium

Abstract

In the present invention, a CPU detects bar lines in a musical score image to divide at each bar line, and obtains the layout range of music notes in each measure obtained by the division. Subsequently, the CPU estimates the position of each music note in the obtained layout range by using music note data, and detects a matching value and a detected position of a music note at the estimated position as position candidates. Then, the CPU excludes a musically improper position candidate from among the detected position candidates, and determines the detected position of a position candidate having the highest matching coefficient among the remaining position candidates as the position of the music note.

Description

[0001] This application claims priority based on Japanese Patent Application No. 2012-99643 for which it applied on April 25, 2012, and uses the whole content here. technical field [0002] The present invention relates to a note position detection device, an electronic musical instrument, and a note position estimation method for detecting the position of a note in a score image corresponding to a sound represented by the note data based on a score image and note data of the same musical piece that are independent and not associated with each other. Background technique [0003] Users who want to become familiar with music, especially beginners, often do not know which notes are displayed on the score. Therefore, in recent years, various technologies have been developed that enable intuitive confirmation of the correspondence between musical notes displayed on a musical score and musical note data representing the musical notes. For example, in Japanese Patent No. 3980888, ...

AI Technical Summary

Problems solved by technology

[0004] However, in the technology disclosed in the above-mentioned Japanese Patent No. 3980888, a plurality of note data representing each sound constituting a melody is previously associated with the display position of each note displayed on the music score, so although the note specified by the touch operation can be sounded sound, but there is a problem that the position of the musical note in the musical score image corresponding to the sound represented by the musical note data cannot be detected based on the musical score image and musical note data of the same musical piece which are independent of each other and have no relationship established.

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