Music detection and recognition method

Abstract

The invention discloses a music detection and recognition method. The method comprises the following steps: 1, acquiring a music signal and extracting corresponding music score information; 2, designing a flow-pass filter with the combination of the music score information, and implementing low-pass filtering after half-wave rectification to obtain an envelope of a music signal, so as to primarily segment a note; 3, matching each segmented music with a music score according to high and low channels, using a harmonic peak value ranking comparison method after implementing low-pass filtering on the signal, using a fundamental frequency peak value ranking comparison method after implementing high-pass filtering, combining match results of two channels to obtain a match result of the ith music signal and the jth row of a music score key matrix; 4, comparing for multiple times to finally obtain a playing right-wrong result of each music event of each piano player. The music detection and recognition method judges whether the playing of each music event in the played music is wrong or right, so as to be favorable for improving the quality of music teaching.

Description

technical field [0001] The invention belongs to the field of audio signal processing, in particular to a detection and recognition method for playing music. Background technique [0002] With the continuous improvement of material living standards, more and more people improve their musical quality by learning musical instruments. In the process of music teaching, teachers need to spend a lot of time on multiple performances of the repertoire and correcting students' fingerings and wrong sounds. If they can accurately detect and identify the music played, and give feedback on the correct and wrong results of the performance, students can be targeted. Correct mistakes, thereby improving learning efficiency, while reducing the teaching burden of music teachers. [0003] With the development of music signal processing technology, a variety of music detection and recognition methods have been produced. The current detection methods can be roughly divided into three types based ...

AI Technical Summary

Problems solved by technology

This method can realize the conversion of performance music and score, but its limitation is that it does not realize the comparison between performance music and known score, and cannot play the role of finding mistakes and correcting mistakes

[0006] It can be seen from the above that the existing technology can realize music mode judgment and music signal transcription, but cannot realize the right or wrong judgment of each music event in the performance music

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