摘要
研究录音资料真实性的准确检测问题。录音资料中由于放置时间、录制环境等问题,会产生大量的噪声,噪声对存储介质中磁/荷分布产生干扰,造成连续的识别信号发生跳变。传统算法本质上是对存储介质中磁/荷分布连续性的检测,一旦发生跳变,会对检测结果造成较大程度的干扰,检测准确度降低。为解决上述问题,提出一种对录音资料真实性的检测方法,根据duffing混沌校验的微弱信号检测理论,通过对大量录音资料的时域分析,排除噪声干扰,完成录音资料真实性的判断。仿真结果证明,新方法不仅能有效地检测录音资料的真实性,而且能估计剪辑点的位置,具有较高鉴别率。
Research accurate recognition of recording material.Recording material is complex and has many noises This paper put forward a 2-d recording material authenticity identification algorithm based on Duffing chaotic check signal detection theory.Based on a large number of recording data of time domain analysis,the noise interference was eliminated to finish the recording material authenticity judgment.The experiment results show that the proposed algorithm can improve the accuracy of identification..
出处
《计算机仿真》
CSCD
北大核心
2012年第10期419-422,共4页
Computer Simulation
基金
国家科技计划项目(2008RR0003)
贵州省国际科技合作计划项目([2009]700109)
关键词
混沌校验
录音资料
真实性检测
Chaos calibration
Recording material
Authenticity detection
