Musical instrument performance point determining and rhythm scoring method

Abstract

The invention discloses a musical instrument performance point determining and rhythm scoring method. The method includes the steps of S1, obtaining audio performance data; S2, dividing the audio performance data into fixed-length segments, naming the fixed-length segments in sequence, performing short-time Fourier transform, and getting a fixed-proportion spectrogram with the corresponding name;S3, inputting the spectrogram into a target detection framework; S4, selecting whether to delete certain bounding boxes with scores lower than a preset value or not based on certainty scores; S5, according to file names, reorganizing a bounding box sequence; S6, setting the two horizontal coordinates of the bounding boxes as X1 and X2 to obtain the time series of user performance points; S7, performing operation in the steps S1 to S6 on template audio data to obtain the time series of template performance points; S8, using dynamic programming for point matching; and S9, performing scoring. Theoutput data of the audio data after the short-time Fourier transform is used to generating an image by using a color gradient, it is visually reflected that the color is darker, and either the performance point is noise or musical instrument sound is judged.

Description

technical field [0001] The invention relates to the field of electronic musical instruments, more precisely, it relates to a method for determining performance points of musical instruments and scoring rhythms. Background technique [0002] The determination of the performance point of the existing musical instruments generally adopts methods such as difference processing and Fourier transform. This method cannot accurately obtain the performance point of the musical sound for the fast-paced segment, and the experience is relatively poor in a noisy environment. At the same time, It is difficult to detect playing points with low volume. Contents of the invention [0003] The present invention mainly solves the technical problems existing in the prior art, thereby providing a method for determining musical instrument performance points and scoring rhythm. [0004] Above-mentioned technical problem of the present invention is mainly solved by following technical scheme: [...

AI Technical Summary

Problems solved by technology

[0002] The determination of the performance point of the existing musical instruments generally adopts methods such as difference processing and Fourier transform. This method cannot accurately obtain the performance point of the musical sound for the fast-paced segment, and the experience is relatively poor in a noisy environment. At the same time, Difficult to detect playing points at low volumes

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