音频取证若干关键技术研究进展

摘要

The latest research progress in audio forensics is introduced with the emphasis on audio authen‐ticity .First ,the history of audio forensics research is reviewed .The classification of audio forensics is discussed .Then ,the framework of audio forensics is designed .Several key technologies of audio foren‐sics are summarized including audio active forensics technology ,audio tamper technology based on electri‐cal network frequency (ENF) ,audio tamper detection technology with different sampling rates and audio tamper detection technology with the same sampling rates under the passive power grid frequency compo‐nents ,the characteristic parameters of recording equipment ,pattern recognition ,situation of database construction ,recording environment identification and so on .Finally ,the prospective of audio forensics technology is presented .%介绍了音频取证领域的最新研究进展、音频真实性的研究状况。对音频取证研究领域的历史进行了回顾，探讨了音频取证的分类，构建了音频取证框架。对音频取证的若干个关键技术进行了总结，包括音频主动取证技术、基于电网频率特征的音频篡改技术、无电网频率成分下的音频篡改检测技术、录音设备的特征参数、模式识别、数据库建设情况以及录音场合识别等。最后对音频取证技术进行了总结和展望。