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Device and method for analyzing audio data

A technology of audio data and analysis device, applied in speech analysis, electrical digital data processing, special data processing applications, etc., to achieve the effects of saving time, fast retrieval, and meeting viewing needs

Inactive Publication Date: 2010-03-31
SONY CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Precision can reach 94.9% (37 / 39) and recall 90.2% (37 / 41), but only detection of goals is done

Method used

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  • Device and method for analyzing audio data
  • Device and method for analyzing audio data
  • Device and method for analyzing audio data

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Embodiment Construction

[0040] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0041] In the following, taking a football game as an example, the classifier used in the analyzing device and method of the present invention will be described first.

[0042] In the first embodiment of the present invention, five audio types are defined for the characteristics of football matches, including referee whistles, audience cheers, narrator's excited commentary, music and others, which are used to detect noise in football matches. Highlights such as goals scored, free kicks and more. These five types were chosen to allow for better analysis of the audio stream in relation to the highlights above, where referee whistles, crowd cheers and commentators' exc...

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Abstract

The invention provides a device for analyzing audio data by using an SVM method. The device is characterized by comprising an input unit, a preprocessing unit, a classifying unit and a post processingunit, wherein the input unit is used for inputting audio stream; the preprocessing unit is used for preprocessing the audio stream to obtain a characteristic parameter of each frame; the classifyingunit analyzes the category to which each frame belongs according to the characteristic parameter; and the post processing unit carries out post processing on the classifying result of the classifyingunit to obtain the final subsection result. The characteristic parameter comprises short time average energy, subband energy, zero-crossing rate, Mel frequency domain cepstrum coefficient, delta Mel frequency domain cepstrum coefficient, spectrum flux and fundamental tone frequency. The invention realizes quick retrieval of splendid contents, and can save the time of audiences and meet the watching demand of the audiences.

Description

technical field [0001] The present invention relates to an audio data analysis device and method, in particular, the present invention relates to an analysis device and method for analyzing audio data using the SVM method. Background technique [0002] At present, a large number of sports competitions are pouring into the audience's field of vision. The impact of more and more sports videos makes people's requirements for effective retrieval and management of sports videos more and more urgent. As far as football games are concerned, the entire game time is about 2 hours, and sometimes it will be broadcast live late at night. However, what football fans really care about and want to watch usually takes up a very small portion of the show throughout the game. In this context, fans expect an efficient content analysis and retrieval system. Using this technology, sports fans can not only selectively watch games, but also save a lot of time. [0003] Content analysis of foot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/30G10L11/00G10L25/03G10L25/57
Inventor 刘昆吴伟国
Owner SONY CHINA
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