Piano playing evaluation method and system

Abstract

The invention discloses a piano playing evaluation method and system. The method comprises: obtaining to-be-evaluated music; obtaining sample music; extracting semitone features of the to-be-evaluated music and the sample music; with a dynamic time wrapping algorithm, carrying out matching and comparison on the semitone features of the to-be-evaluated music and the sample music to obtain a mismatching wrong time point; extracting a music signal of the sample music at the wrong time point; with a short-time Fourier transform method, processing the music signal at the wrong time point to obtain a frequency spectrum feature of the music signal; carrying out non-negative matrix decomposition on the correct frequency spectrum feature to obtain frequency spectrum features of all pitches in a chord; according to the frequency spectrum features of all pitches, calculating frequencies of all pitches; converting the frequencies of all pitches into notes; and outputting the notes. According to the piano playing evaluation method and system, the piano practice can find out a playing error by himself inpendnelty without accompany of a teacher and thus can carry out correction timely, so that the practicing efficiency can be improved.

Description

technical field [0001] The invention relates to the field of music evaluation, in particular to a piano performance evaluation method and system. Background technique [0002] The piano, because of its ease of use and artistry, has a large number of amateurs and professional learners. Under normal circumstances, piano learning requires the guidance of a professional teacher, who corrects mistakes made by piano students during their performance while teaching. However, professional teachers cannot pay attention to each practitioner all the time, so most of the time, practitioners need to practice independently in order to be able to play the piano accurately and fluently. Although many beginners will use various recording equipment to record relatively "accurate" versions played by professional teachers, because beginners have relatively shallow cognition of notes, when a beginner is practicing piano music, he cannot Judge whether the result you play is consistent with the ...

AI Technical Summary

Problems solved by technology

However, professional teachers cannot pay attention to each practitioner all the time, so most of the time, practitioners need to practice independently to be able to play the piano accurately and fluently

Although many beginners will use various recording equipment to record relatively "accurate" versions played by professional teachers, because beginners have relatively shallow cognition of notes, when a beginner is practicing piano music, he cannot Judging whether the result you play is consistent with the version played by the teacher. Even if you can distinguish the difference, you cannot accurately find the wrong place

This determines that he has to wait until the next teaching to make corrections through the judgment of professional teachers, resulting in low practice efficiency, which is obviously unacceptable

[0003] In the prior art, there are few related technologies that can assist beginners to independently find errors in playing and correct them in time without the company of a teacher when they first start practicing the piano. and the accuracy of the final music performance is difficult to improve quickly

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