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A real-time segmentation method of musical instrument audio implemented on smart mobile devices

A technology for mobile devices and musical instruments, applied in voice analysis, sub-office equipment, instruments, etc., can solve the problems of restricting the use and promotion of audio segmentation applications, and the lack of portability of PCs, achieving the effect of fast speed and low resource consumption

Inactive Publication Date: 2018-03-20
WUHAN INSTITUTE OF TECHNOLOGY
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  • Summary
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional audio segmentation method is calculated on the PC side, because the PC is not portable, which limits the use and promotion of some applications that require audio segmentation on smart mobile communication devices

Method used

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  • A real-time segmentation method of musical instrument audio implemented on smart mobile devices
  • A real-time segmentation method of musical instrument audio implemented on smart mobile devices
  • A real-time segmentation method of musical instrument audio implemented on smart mobile devices

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Embodiment Construction

[0024] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0025] Such as figure 1 As shown, a real-time segmentation method for musical instrument audio implemented on a smart mobile device, comprising the following steps:

[0026] 1) Acquisition of audio data: the audio data of musical instruments played is obtained in real time by the recording device on the mobile communication device; the sampling frequency is 44.1KHz or 22.1KHz, and the audio signal file format is mp3.

[0027] 2) Front-end mute elimination: Eliminate the mute data at the beginning of the collected audio data; during the sampling process, because the recording preparation takes a period of time, the front en...

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Abstract

The invention discloses a method for real-time segmentation of musical instrument audio realized on an intelligent mobile device. The method can realize the synchronous operation of recording and segmentation on the mobile device. In order to achieve a real-time effect, the present invention determines the existence of the real jump point by calculating the short-term energy of the signal in the fixed-length window and looking for the sudden change of the energy mean value after fast preprocessing, making it possible to process while collecting. For audio signals produced by musical instruments, the present invention can segment and quickly display the collected audio signals while the user is playing the musical instrument, and perform deep processing such as audio recognition, semantic structured information acquisition, and audio retrieval for the user. Prepare.

Description

technical field [0001] The invention relates, in particular, to a method for real-time segmentation of musical instrument audio realized on an intelligent mobile device. Background technique [0002] Audio segmentation is a necessary step for audio recognition, acquisition of semantically structured information, and audio retrieval. The traditional audio segmentation method starts to segment the audio after obtaining all the audio information, that is, the synchronous operation of recording and segmentation is not realized. The traditional audio segmentation method is calculated on the PC side, because the PC is not portable, which limits the use and promotion of some applications that require audio segmentation on smart mobile communication devices. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a real-time musical instrument audio segmentation method implemented on an intelligent mobile device in view of the ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04M1/725G10L21/0272H04M1/72442
Inventor 冷娇娇赵彤洲方晖李翔李碧翟畅
Owner WUHAN INSTITUTE OF TECHNOLOGY