System and method for analyzing streaming-media real-time music beats and controlling dance

Abstract

The invention provides a system and a method for analyzing streaming-media real-time music beats and controlling dance, which relates to the technical field of music beat analysis, and solves the problem that the prior art is unsuitable for real-time beat detection and needs to be equipped with special hardware. The system comprises an audio-data acquisition module, a music-beat analysis module, a music-beat speed analysis module and a dance control module. The method comprises the following steps of: A, acquiring audio data; B, performing sampling analysis on the audio data acquired in the step A and preliminarily judging suspected beat point data; C, performing second analysis on suspected beat points obtained in the step B and screening out formal beat points; D, analyzing the speed of music beats; and E, controlling dance. The invention can dynamically analyze the speed of the music beats and beat information in real time so as to ensure synchronous play of dance and music. The invention directly obtains waveform sample data from hardware with no special decoder, and then can analyze beat speed, thereby having the advantages of simple method, convenient use and applicability to most of requirements of streaming-media real-time music analysis.

Description

technical field [0001] The invention relates to the field of computer music tempo analysis, in particular to a system and a software method which uses sound card API to directly obtain sound card data for real-time music tempo analysis and music tempo (BPM) analysis, and controls synchronous playback of dance and music. Background technique [0002] Music is a work of art and a creation of human consciousness. It is difficult to analyze the specific performance music with numerical values. Audio files are stored in the computer in the form of sampling points. During playback, the audio files are first decompressed and then decompressed The final data is transmitted to the sound card driver, and the sound card driver processes the data and sends it to the sound card hardware, and the hardware performs digital-to-analog conversion and then sends the analog signal to the sound output device. [0003] The general method of obtaining music beat speed (BPM) and beat information is...

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the above device is that the instantaneousness of the detection beat is not strong. At least three beats of the music are required to obtain the music speed and beat position. In addition, the large amount of calculation is not suitable for real-time beat detection, and the above patents are based on detection A single music tempo is targeted instead of primarily used to obtain beat data

In addition, the above devices are all realized by special hardware, the cost is high and special hardware interface is required, and the versatility is not strong

[0008] In addition, specific music is generally affected by the emotions expressed by the performer and the music, so the tempo of music is not a fixed value, and variations often occur in music, so it is not appropriate to use a single value to describe the tempo of music

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