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arXiv 2005.08601eess.AScs.CL
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基于X向量的说话人自动化的设计选择

Design Choices for X-vector Based Speaker Anonymization

Inria(法国国家信息与自动化研究所);Laboratoire Informatique d’Avignon (LIA)(阿维尼翁计算机实验室);Avignon Université(阿维尼翁大学);National Institute of Informatics(国立信息学研究所);Université de Lorraine(洛林大学);CNRS(法国国家科学研究中心);LORIA(洛林计算机科学及其应用实验室)

Brij Mohan Lal Srivastava, Natalia Tomashenko, Xin Wang, Emmanuel Vincent, Junichi Yamagishi, Mohamed Maouche, Aurélien Bellet, Marc Tommasi

摘要:

最近提出的基于x向量的匿名化方案将任何输入语音转换为随机伪说话者的语音。在本文中,我们提出了一个灵活的伪扬声器选择技术作为基线的第一个语音隐私的挑战。我们探讨了几种设计选择的距离度量扬声器之间,该区域的x-向量空间的伪扬声器被选中,和性别选择。为了评估匿名化的强度,我们考虑使用基于x向量的说话人验证系统的攻击者,他们可能会使用原始或匿名语音进行注册,这取决于他们对匿名化方案的了解。报告了攻击者实现的等错误率(EER)和匿名数据的解码字错误率(WER)作为隐私和实用性的度量。使用LibriSpeech数据集进行实验,以找到隐私和实用性方面的设计选择的最佳组合。

英文摘要:

The recently proposed x-vector based anonymization scheme converts any input voice into that of a random pseudo-speaker. In this paper, we present a flexible pseudo-speaker selection technique as a baseline for the first VoicePrivacy Challenge. We explore several design choices for the distance metric between speakers, the region of x-vector space where the pseudo-speaker is picked, and gender selection. To assess the strength of anonymization achieved, we consider attackers using an x-vector based speaker verification system who may use original or anonymized speech for enrollment, depending on their knowledge of the anonymization scheme. The Equal Error Rate (EER) achieved by the attackers and the decoding Word Error Rate (WER) over anonymized data are reported as the measures of privacy and utility. Experiments are performed using datasets derived from LibriSpeech to find the optimal combination of design choices in terms of privacy and utility.

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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