arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2202.03484cs.LG
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基于人机对话的自监督说话人识别训练

Self-supervised Speaker Recognition Training Using Human-Machine Dialogues

Amazon(亚马逊公司)

Metehan Cekic, Ruirui Li, Zeya Chen, Yuguang Yang, Andreas Stolcke, Upamanyu Madhow

摘要:

说话人识别,仅基于语音识别说话人身份,可以实现重要的下游应用,如个性化和身份验证。在监督学习的背景下,说话人表征的学习在很大程度上依赖于干净且足够的标记数据,而这些标记数据通常很难获得。另一方面,噪声未标记数据也提供了有价值的信息,可以使用自监督训练方法加以利用。在这项工作中,我们研究了如何通过利用客户和智能扬声器设备之间的对话来预训练说话人识别模型。然而,这样的对话中的监督信息固有地是嘈杂的,因为多个说话者可能在同一对话的过程中对设备说话。为了解决这个问题,我们提出了一个有效的拒绝机制,选择性地学习对话的基础上,他们的声学同质性。比较了基于重构和基于对比学习的自监督方法。实验表明,该方法提供了显着的性能改善,优于早期的工作。对话预训练时,结合拒绝机制产生27.10%的平等出错率(EER)减少说话人识别,相比没有自我监督的预训练模型。

英文摘要:

Speaker recognition, recognizing speaker identities based on voice alone, enables important downstream applications, such as personalization and authentication. Learning speaker representations, in the context of supervised learning, heavily depends on both clean and sufficient labeled data, which is always difficult to acquire. Noisy unlabeled data, on the other hand, also provides valuable information that can be exploited using self-supervised training methods. In this work, we investigate how to pretrain speaker recognition models by leveraging dialogues between customers and smart-speaker devices. However, the supervisory information in such dialogues is inherently noisy, as multiple speakers may speak to a device in the course of the same dialogue. To address this issue, we propose an effective rejection mechanism that selectively learns from dialogues based on their acoustic homogeneity. Both reconstruction-based and contrastive-learning-based self-supervised methods are compared. Experiments demonstrate that the proposed method provides significant performance improvements, superior to earlier work. Dialogue pretraining when combined with the rejection mechanism yields 27.10% equal error rate (EER) reduction in speaker recognition, compared to a model without self-supervised pretraining.

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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