Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (9): 123-126.DOI: 10.3778/j.issn.1002-8331.2010.09.035

• 数据库、信号与信息处理 • Previous Articles     Next Articles

New adaptive real-time active audio detection algorithm

XU Xue-qiong,YU Xiao-qing,WAN Wang-gen,CHANG Liao-yu   

  1. School of Communication and Information Engineering,Shanghai University,Shanghai 200072,China
  • Received:2008-09-24 Revised:2008-12-23 Online:2010-03-21 Published:2010-03-21
  • Contact: XU Xue-qiong



  1. 上海大学 通信与信息工程学院,上海 200072
  • 通讯作者: 许雪琼

Abstract: The paper proposes a new,effective and real-time algorithm to detect active audio in order to meet the demands of accuracy,complexity and real-time property for signal synchronization in audio assessment system.Based on the short time energy characteristics,the algorithm dynamically sets the threshold using average energy and standard deviation,distinguishes active audio from non-active audio by reversing non-active audio segments.The proposed algorithm also produces a good result in low SNR environment to synchronously detect active audio.

Key words: energy, adaptive, audio detection

摘要: 针对音频评价系统中信号同步处理对算法准确度、复杂度、实时性等要求,提出一种简单、有效、实时的活动音频检测方法。该方法基于音频短时能量特征,通过能量均值和均方差分层逐步调整,动态设定判决门限,通过倒置非活动音频段,快速区分活动音频和非活动音频。提出的方法在低信噪比环境下也能实时地检测出活动音频。

关键词: 能量, 自适应, 音频检测

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