Method and system for obtaining music beat information in real time

A real-time acquisition and beat technology, applied in the field of signal processing, can solve problems such as inability to guide beat operation, large amount of calculation, long delay, etc.

Active Publication Date: 2016-08-17
HEFEI IFLYTEK TOYCLOUD TECH
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Problems solved by technology

[0004] In the prior art, the offline detection method is usually used to detect the music beat. This method not only has a large amount of calculati

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  • Method and system for obtaining music beat information in real time
  • Method and system for obtaining music beat information in real time
  • Method and system for obtaining music beat information in real time

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[0088] In order to enable those skilled in the art to better understand the solutions of the embodiments of the present invention, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings and implementation manners.

[0089] The method and system for obtaining music beat information in real time provided by the embodiments of the present invention receive music signals through real-time tracking, and discretely sample the music signals to obtain a sampling sequence, and then obtain an effective signal peak point sequence according to the sampling sequence, And use the effective signal peak point sequence to determine the starting point of the subsequent beat. Therefore, the starting point of the next beat can be determined instantly while the music is playing, which realizes the advance prediction of the starting point of the subsequent beat, and provides conditions for real-time response operations of various b...

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Abstract

The present invention relates to the technical field of signal processing, and discloses a method and system for obtaining music tempo information in real time. The method includes: tracking and receiving music signals in real time, and performing discrete sampling on the music signals to obtain a sampling sequence; The sequence determines the historical path set of the beat starting point of the music signal prediction segment; predicts the beat period of the newly received music signal; determines the beat starting point of the subsequent music signal according to the historical path set of the beat starting point and the predicted beat period. The invention can realize real-time tracking and prediction of music signals, and provide accurate information for real-time operation of various beats.

Description

technical field [0001] The invention relates to the technical field of signal processing, in particular to a method and system for acquiring music tempo information in real time. Background technique [0002] Beat is an organizational form in music that expresses the fixed unit time value and the law of strength and weakness. It has two characteristics, periodicity and continuity. Beat periodicity is expressed as a beat structure, which is a rhythmic sequence that occurs periodically in a piece of music. Beat continuity is expressed as the average speed of music, and its unit is bpm (beat per minute, the number of music beats per minute). [0003] At present, in many applications, it is necessary to track and obtain the beat information of the music in real time. For example, a music DJ needs to know the beat information of the music when making a soundtrack; It is not only necessary to detect the beat of the music, but also to be able to predict the starting point of the ...

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Application Information

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IPC IPC(8): G10L25/48
Inventor 谢秀琴王海坤何婷婷胡国平胡郁刘庆峰
Owner HEFEI IFLYTEK TOYCLOUD TECH
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