MIDI rhythm type identification method and application

Abstract

The invention discloses an MIDI rhythm type identification method. The method comprises the steps: splitting an MIDI fragment into a bass area and a middle-high pitch area according to voice thresholddistribution; dividing the MIDI fragment into N units according to a certain unit length, dividing the time length corresponding to each unit into a plurality of time steps, and respectively countingthe occurrence frequency of notes of each time step in a bass region and a middle-high pitch region; aiming at the bass zone and the middle-high pitch zone, respectively counting the average frequency of notes appearing on the time steps corresponding to the N units, wherein a sequence formed by the average frequency according to time steps represents rhythmic characteristics. The invention alsodiscloses a rhythm type-based music style determination method and a rhythm type-based playing mode determination method. The three methods are simple, and a new thought is provided for automatic composition and automatic accompaniment.

Description

technical field [0001] The invention belongs to the field of MIDI music, and in particular relates to a MIDI rhythm type recognition method, a rhythm type-based music style determination method and a performance method determination method. Background technique [0002] The rhythmic pattern of music generally refers to the regular repetition of melody, texture, drums and other parts that give people a sense of music. In jazz, it can be thought of as the quality of a continuously repeating rhythmic unit that results from the interplay of music played by the rhythm section of the band (for example, drums, electric bass or double bass, guitar, and keyboards) . Rhythmic patterns are an important feature of popular music and can be found in many genres, including salsa, funk, rock, fusion, and soul music. A rather typical rock and roll rhythm pattern is the heavy beat of the bass drum and textured instruments in measures 1 and 3, the high-pitched decorative performance of snare...

AI Technical Summary

Problems solved by technology

[0008] However, the existing algorithms generally generate MIDI notes based on a predetermined rhythm pattern template, and analyze the rhythm pattern for a given MIDI, and speculate on the style of the existing MIDI segment, and the scheme of similar or difference generation is relatively vacant.

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