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Privacy-preserving Automatic Speaker Diarization

2022-10-26 19:34:47
Francisco Teixeira, Alberto Abad, Bhiksha Raj, Isabel Trancoso
arXiv_SD
       
Abstract

Automatic Speaker Diarization (ASD) is an enabling technology with numerous applications, which deals with recordings of multiple speakers, raising special concerns in terms of privacy. In fact, in remote settings, where recordings are shared with a server, clients relinquish not only the privacy of their conversation, but also of all the information that can be inferred from their voices. However, to the best of our knowledge, the development of privacy-preserving ASD systems has been overlooked thus far. In this work, we tackle this problem using a combination of two cryptographic techniques, Secure Multiparty Computation (SMC) and Secure Modular Hashing, and apply them to the two main steps of a cascaded ASD system: speaker embedding extraction and agglomerative hierarchical clustering. Our system is able to achieve a reasonable trade-off between performance and efficiency, presenting real-time factors of 1.1 and 1.6, for two different SMC security settings.

Abstract (translated)

URL

https://arxiv.org/abs/2210.14995

PDF

https://arxiv.org/pdf/2210.14995.pdf

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