arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2104.07286cs.SDcs.LGeess.AS
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用于虚假音频检测的持续学习

Continual Learning for Fake Audio Detection

Institute of Automation, Chinese Academy of Sciences(中国科学院自动化研究所);University of Chinese Academy of Sciences(中国科学院大学);CAS Center for Excellence in Brain Science and Intelligence Technology(中国科学院脑科学与智能技术卓越创新中心)

Haoxin Ma, Jiangyan Yi, Jianhua Tao, Ye Bai, Zhengkun Tian, Chenglong Wang

摘要:

虚假音频攻击成为说话人确认系统的主要威胁。虽然目前的检测方法已经取得了可喜的成果,在特定的情况下,他们遇到的困难,看不见的欺骗数据。为纳入新数据,从零开始进行了微调和再培训。然而,微调会导致先前数据的性能下降。重新训练需要大量的时间和计算资源。此外,在某些情况下,由于隐私原因,以前的数据不可用。针对上述问题,本文提出了一种基于连续学习的无遗忘伪检测方法,使模型能够增量地学习新的欺骗攻击。在损失函数中引入知识蒸馏损失,以保持原模型的记忆。假设真实语音在不同场景中的分布是一致的,额外的嵌入相似性损失被用作另一个约束,以进一步进行正样本对齐。实验在ASVspoof2019数据集上进行。实验结果表明,该方法的平均等出错率相对降低了81.62%。

英文摘要:

Fake audio attack becomes a major threat to the speaker verification system. Although current detection approaches have achieved promising results on dataset-specific scenarios, they encounter difficulties on unseen spoofing data. Fine-tuning and retraining from scratch have been applied to incorporate new data. However, fine-tuning leads to performance degradation on previous data. Retraining takes a lot of time and computation resources. Besides, previous data are unavailable due to privacy in some situations. To solve the above problems, this paper proposes detecting fake without forgetting, a continual-learning-based method, to make the model learn new spoofing attacks incrementally. A knowledge distillation loss is introduced to loss function to preserve the memory of original model. Supposing the distribution of genuine voice is consistent among different scenarios, an extra embedding similarity loss is used as another constraint to further do a positive sample alignment. Experiments are conducted on the ASVspoof2019 dataset. The results show that our proposed method outperforms fine-tuning by the relative reduction of average equal error rate up to 81.62%.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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