一种快速鲁棒的广告音频指纹提取方法  

Fast and Robust Extraction Method for Advertising Audio Fingerprint

作　　者：聂华[1,2] 欧阳建权[1,2] 

机构地区：[1]湘潭大学智能计算与信息处理教育部重点实验室,湖南湘潭411105 [2]湘潭大学信息工程学院,湖南湘潭411105

出　　处：《计算机工程》2011年第10期207-209,共3页Computer Engineering

基　　金：国家科技支撑计划基金资助项目"面向全网运营的数字卡通工程化技术研究与应用"(2007BAH14B05)

摘　　要：利用音频特征检测电视广告具有处理速度快、准确率高等优点,为此提出一种快速鲁棒的广告音频指纹提取方法。该方法将优化后的频域分为33个频带,分别计算当前帧相邻2个子带频域幅值的差异值与前一帧对应的相邻2个子带频域幅值的差异值,并将2帧的差异值之和相应设为0或1,每帧提取32个0/1值作为指纹。实验结果表明,该方法在保证快速提取指纹的同时,对常见的音频信号处理具有较强鲁棒性。TV commercial detection using audio features has many advantages such as high speed and accuracy.This paper presents a fast and robust audio fingerprint extraction algorithm.The optimized frequency domain is divided into 33 bands,and the energy differences of the neighbor bands in current frame and in the previous frame are extracted separately.And the sum of the energy differences is set as corresponding value of 0 or 1.The audio fingerprint can be generated by 32 values of 0 or 1 in each frame.Experimental results show that the method proposed ensures high extraction speed and robustness against common audio signal operations.

关 键 词：广告检测 音频指纹 指纹提取 鲁棒性 实时性 

分 类 号：TN911.73[电子电信—通信与信息系统]