CAJ | 학술논문

基于生物特征的身份认证已得到学术界及企业的高度重视，指纹、人脸识别应用已非常普遍，但对于非现场身份认证，语音相对其他生物特征，具有用户接受程度高、拾音设备简单、随时随地可用、数据量小、计算复杂度低等优势，因此基于声纹的身份认证系统应用越来越广泛。另一方面，由于录音回放攻击简单易行，不需要任何专业知识，且随着廉价、高质量的录音/播放装置的日益增多，回放录音与原始音的相似度越来越高，已成为声纹认证系统最主要的攻击手段之一，因此如何识别录音回放等攻击成为说话人认证系统必须面对的问题。本文对录音回放检测方法进入了全面的介绍，通过对各种方法的分析，表明其研究尚处于起步阶段，但需求日益旺盛。
기우생물특정적신빈인증이득도학술계급기업적고도중시，지문、인검식별응용이비상보편，단대우비현장신빈인증，어음상대기타생물특정，구유용호접수정도고、습음설비간단、수시수지가용、수거량소、계산복잡도저등우세，인차기우성문적신빈인증계통응용월래월엄범。령일방면，유우록음회방공격간단역행，불수요임하전업지식，차수착렴개、고질량적록음/파방장치적일익증다，회방록음여원시음적상사도월래월고，이성위성문인증계통최주요적공격수단지일，인차여하식별록음회방등공격성위설화인인증계통필수면대적문제。본문대록음회방검측방법진입료전면적개소，통과대각충방법적분석，표명기연구상처우기보계단，단수구일익왕성。
Biometric authentication system has been widely used today,including fingerprint and face rec-ognition systems.As for non-spot user authentication,compared with other biometric traits,speech has some advantages,such as high acceptability,low demand on equipments,flexible access anywhere and anytime,low computation complexity and suitability for remote authentication,which promotes the ap-plications of speech-based authentication system.However,playback becomes a general risk because of its easy carring out without any training,and the availability of cheap-high quality audio recorder and speaker.This paper gives a through review to the methods for playback detection.It shows that the re-search is at the start point,but the demands are increasing.