Accuracy improvement of speaker authentication in noisy environments using bone-conducted speech
Accuracy improvement of speaker authentication in noisy environments using bone-conducted speech
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DOI：
10.1109/mwscas.2010.5548701
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发表时间：
2010-08
期刊：
影响因子：
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通讯作者：
Naoto Yamasaki;T. Shimamura
中科院分区：
文献类型：
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作者：
Naoto Yamasaki;T. Shimamura
说话人认证由于只需要话筒和电话网络这两种标准的语音通信设备和广泛使用，近年来在生物特征认证技术中受到了广泛的关注。然而，说话人认证系统存在对噪声敏感的问题。因此，Iijima等人。[7]尝试使用抗噪能力强的骨传导语音，而不是空气传导语音。此外，为了提高高噪声环境下认证的准确率，提出了一种语音变换方法。本文分析了Iijima语音变换方法存在的问题，提出了两种新的语音变换方法。实验证明，本文提出的语音变换方法在高噪声环境下是有效的。
Speaker authentication has received much attention recently in biometrics authentication technology since it needs only microphones and telephone networks which are standard equipments for voice communication and widely used. However, there are problems where speaker authentication systems are sensitive to noise. Thus, Iijima et al. [7] attempted to utilize bone-conducted speech that is robust against noise, instead of airconducted speech. Additionally, a speech transformation method was suggested for improving the authentication accuracy in highly noisy environments. In this paper, we analyze the problem of Iijima's speech transformation method and propose two new speech transformation methods. Experiments verify that the proposed speech transformation methods are effective in highly noisy environments.