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Audio beat information detection method and device and storage medium

A detection method and audio technology, applied in voice analysis, instruments, electro-acoustic musical instruments, etc., can solve problems such as poor accuracy and achieve the effect of improving detection accuracy

Active Publication Date: 2020-08-07
TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, BPM has a variety of practical applications, such as integrating specific BPM music into video in real time to improve the overall experience of video, so BPM detection is a research hotspot, and traditional audio beat detection methods focus on In audio signal processing, such as using frequency domain signal difference, frequency domain energy envelope, time domain waveform signal envelope peak value, low frequency signal energy and onset position and other information to measure, but the detection accuracy is poor

Method used

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  • Audio beat information detection method and device and storage medium
  • Audio beat information detection method and device and storage medium
  • Audio beat information detection method and device and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0073] In this embodiment, description will be made from the perspective of an audio tempo information detection device. The audio tempo information detection device may be integrated in a server equipped with a storage unit and equipped with a microprocessor and capable of computing.

[0074] see figure 2 , figure 2 It is a schematic flowchart of a method for detecting audio tempo information provided in the embodiment of the present application. The detection method of this audio tempo information comprises:

[0075] In step 101, audio to be detected is obtained, and audio features of the audio to be detected are obtained.

[0076] Wherein, the audio to be detected is audio that needs to detect audio beat information in real time, and the audio to be detected includes an audio genre style, the audio genre style is unknown, and the audio to be detected can be treated according to a preset step size and a preset frame length Perform framing processing to obtain multi-fram...

Embodiment 2

[0122] According to the method described in Embodiment 1, an example will be given below for further detailed description.

[0123] In this embodiment, description will be made by taking the device for detecting tempo information of the audio being integrated in the server and the audio being a music segment as an example.

[0124] see image 3 , image 3 Another schematic flowchart of the method for detecting audio tempo information provided by the embodiment of the present application. The method flow may include:

[0125] In step 201, the server acquires training samples.

[0126] Wherein, the training samples may be multiple music clips, the training samples include multiple audio genres, and the server marks the training samples so that each beat point in the music clips of each training sample is marked.

[0127] In step 202, the server classifies the training samples according to the audio genres to obtain multiple target training sample sets corresponding to differ...

Embodiment 3

[0158] In this embodiment, description will be made from the perspective of an audio tempo information detection device. The audio tempo information detection device may be integrated in a server equipped with a storage unit and equipped with a microprocessor and capable of computing.

[0159] see Figure 5 , Figure 5 It is a schematic flowchart of a method for detecting audio tempo information provided in the embodiment of the present application. The detection method of this audio tempo information comprises:

[0160] In step 301, audio to be detected is obtained, and audio features of the audio to be detected are obtained.

[0161]Wherein, the audio to be detected is audio that needs to detect audio beat information in real time, and the audio to be detected includes an audio genre, and the audio to be detected can be divided into frames according to a preset step size and a preset frame length to obtain multiple Frame signal, for example, set the preset step size to 51...

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Abstract

The embodiment of the invention discloses an audio beat information detection method and device and a storage medium, and the method comprises the steps: obtaining a to-be-detected audio, and obtaining the audio features of the to-be-detected audio; obtaining a pre-trained reference neural network model and a plurality of genre neural network models; respectively inputting the audio features of the to-be-detected audio into each genre neural network model to obtain a plurality of genre audio beat information; inputting the audio features of the to-be-detected audio into the reference neural network model to obtain reference audio beat information; and determining target audio beat information of the to-be-detected audio in combination with the reference audio beat information and the plurality of genre audio beat information. Therefore, multi-model training is carried out according to different audio genre styles, the target audio beat information output by the genre neural network model matched with the audio genre style of the to-be-detected audio is intelligently selected, and the detection accuracy of the audio beat information is improved.

Description

technical field [0001] The present application relates to the technical field of audio processing, in particular to a method, device and storage medium for detecting audio tempo information. Background technique [0002] Digital audio, as the name implies, is the audio stored in the network server in the form of digital signals, which is transmitted in the network space and has the advantage of fast speed, and the number of beats per minute (Beat Per Minute, BPM) is a basic attribute of music , is a quantitative index of music speed, and different BPM can express different music emotions. [0003] In the prior art, BPM has a variety of practical applications, such as integrating specific BPM music into video in real time to improve the overall experience of video, so BPM detection is a research hotspot, and traditional audio beat detection methods focus on In audio signal processing, such as using frequency domain signal difference, frequency domain energy envelope, time do...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10L25/51G10L25/30
CPCG10L25/51G10L25/30G10H2210/076G10H2210/036G10H2250/311
Inventor 陈洲旋
Owner TENCENT MUSIC ENTERTAINMENT TECH SHENZHEN CO LTD
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