基于音频匹配的广告智能监播系统

发布时间：2018-06-01 20:31

本文选题：智能 + DSP　；参考：《南京理工大学》2012年硕士论文

【摘要】：基于传统的广告监播方式带来的录像机维护比较困难,大量的节目录像带的存储占据了很大的空间,录像带损耗严重、不利于保存且查找广告困难,效率低等缺点的暴露,本文设计一种自动的、智能的广告监播系统,能为电视台和广告主提供准确可信的数据报告和录像带。本系统采用基于DSP高速、高精度语音识别方法,通过电脑全天候的监控电视广告节目,并且把监控的记录和资料等数据保存起来,避免了人工监听时的耗时、费力等弊端。一般对广告进行监管,主要有对视频和音频的比较两种方法,本系统主要研究的是音频匹配的方法。本系统在基于对语音进行识别和音乐检索技术的基础上,运用COFDM信道编码和调制方法,能够基本完成对广告中所含有的音频的匹配,在整个系统中,最主要的两大阶段就是对音频特征的提取以及对音频模板的匹配。在开始提取特征时,本系统采用MPEG-7的音频编码,通过模式识别、信号处理、音乐心理学交叉学科技术来识别声音特征。在音频匹配模板阶段,采用AES/EBU音频接口协议和COFDM编码以及一些相关的算法来解决一些譬如丢帧或者多帧等等问题。通过实验的验证,可以证明该算法简单、抗干扰能力强、广告识别准确度高!
[Abstract]:It is difficult to maintain the VCR based on the traditional advertising supervision and broadcast mode. The storage of a large number of program videotapes occupies a large space, the video tape is seriously lost, which is not conducive to the preservation and search of advertising difficulties, low efficiency and other shortcomings exposed. In this paper, an automatic and intelligent advertising monitoring system is designed, which can provide accurate and reliable data reports and video tapes for TV stations and advertisers. This system adopts the method of high speed and high precision speech recognition based on DSP, monitors the TV advertisement program by computer all the time, and saves the monitored data, such as the record and the data, avoids the drawback such as time-consuming and laborious. There are two kinds of methods to compare video and audio. The main research of this system is the method of audio match. Based on the technology of speech recognition and music retrieval, the system uses COFDM channel coding and modulation method, which can basically complete the matching of the audio contained in the advertisement. The two most important stages are the extraction of audio features and the matching of audio templates. At the beginning of feature extraction, the system uses MPEG-7 audio coding to recognize sound features through pattern recognition, signal processing and music psychology. In the stage of audio matching template, AES/EBU audio interface protocol, COFDM coding and some related algorithms are used to solve some problems such as losing frames or multiple frames. Through the experimental verification, it can be proved that the algorithm is simple, strong anti-jamming ability, high accuracy of advertising recognition!
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：TN948.1

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