Chinese national pentatonic emotion recognition method and system

A technology of emotion recognition and tone, applied in the field of emotion recognition, can solve problems such as dependence

Active Publication Date: 2019-01-25

CHINA UNIV OF GEOSCIENCES (WUHAN)

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AI-Extracted Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the defect that the current Chinese national pentatonic mode relies on manual identification. The present invention selects the Chinese national music mode as the research object, and proposes to carry out the Chinese national pentatonic mode by construct...

Abstract

The invention discloses a Chinese national pentatonic emotion recognition method and a Chinese national pentatonic emotion recognition system. Firstly, by decoding a MIDI file, all data representing pitches are extracted, repetitive sounds are removed, and pitch sequences are obtained by sorting pitches. The IACTS algorithm is used to identify the data and verify the results, so as to accurately judge the modal of the data. After finding out the Gongyin, all the notes in the music will be classified according to the Gongyin-based pitch relationship. If all the notes can be accurately classified according to the pitch relationship with the Gongyin, then the check is passed and the mode is finally determined. Conversely, if there is a special interval outside the mode, the verification willnot pass; at last, the emotion color of Chinese folk music is judged according to the generally accepted classification method: fu color and feather color.

Application Domain

Electrophonic musical instrumentsSpeech analysis

Technology Topic

IACTClassification methods +4

Image

Examples

Experimental program(1)

Example Embodiment

[0037] In order to have a clearer understanding of the technical features, objectives and effects of the present invention, the specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] reference figure 1 , Which is a flowchart of an embodiment of the Chinese ethnic five-tone emotion recognition method of the present invention. The implementation of the five-tone emotion recognition method of the Chinese ethnic group includes the following steps:

[0039] S1. Obtain a MIDI file of a piece of music and decode it, and extract all the data representing the pitch from it;

[0040] S2. Process the data, remove repeated pitches, and sort the remaining pitches according to the audio size of the pitch to obtain a pitch sequence;

[0041] S3. Find out from the pitch sequence all intervals that can constitute a major third or by raising and lowering several octaves to constitute a major third, to form a new pitch sequence;

[0042] S4. Remove the preset pitches with the lowest frequency in the new pitch sequence; the preset pitch refers to 1, but in other embodiments, it may also be other numbers, such as 2, 3;

[0043] S5. Find the palace tone from the pitch sequence obtained after processing in step S4; the method for finding palace tone is:

[0044] Determine how many pitch sequences obtained after processing in step S4 can constitute a major third interval, if there is only one, the palace tone is obtained directly according to the interval, if it is, there are multiple pitch sequences obtained after processing in step S4, then select The tone with the most frequency is regarded as the palace tone, if not, find the minor third interval from the pitch sequence obtained after the processing in step S4, and set the tone through the palace;

[0045] S6. According to the found palace sounds, classify all the sounds appearing in the pitch sequence obtained in step S4 according to the interval relationship with the palace sounds to determine the final mode. When setting the key, use the tail sound to set the tone ; In step S6, only when all the notes are in accordance with the interval relationship, the tuning is performed, and if an out-of-mode interval appears, it is determined that the mode does not meet the family mode;

[0046] S7. Perform emotion recognition on the modality determined in step S6 by adopting a classification method of phoenix color or feather color.

[0047] In another embodiment of the present invention, steps S2 and S3 are further included:

[0048] S23. Determine whether the scale of the pitch sequence exceeds an octave. If yes, proceed directly to step S3; otherwise, list all intervals beyond the octave through enumeration iteration, and use the pitch sequence with all octaves removed as step S3 In the pitch sequence and proceed to step S3. reference figure 2 , figure 2 It is a flowchart of an embodiment of the preprocessing steps of the present invention, the preprocessing steps are steps S1-S4.

[0049] reference image 3 , The processing results of the Chinese ethnic five-tone emotion recognition method and system of the present invention are as shown in the figure.

[0050] The embodiments of the present invention are described above with reference to the accompanying drawings, but the present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Those of ordinary skill in the art are Under the enlightenment of the present invention, many forms can be made without departing from the purpose of the present invention and the protection scope of the claims, and these are all within the protection of the present invention.

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