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Speech Pseudonymisation Assessment Using Voice Similarity Matrices

Abstract : The proliferation of speech technologies and rising privacy legislation calls for the development of privacy preservation solutions for speech applications. These are essential since speech signals convey a wealth of rich, personal and potentially sensitive information. Anonymisation, the focus of the recent VoicePrivacy initiative, is one strategy to protect speaker identity information. Pseudonymisation solutions aim not only to mask the speaker identity and preserve the linguistic content, quality and naturalness, as is the goal of anonymisation, but also to preserve voice distinctiveness. Existing metrics for the assessment of anonymisation are ill-suited and those for the assessment of pseudonymisation are completely lacking. Based upon voice similarity matrices, this paper proposes the first intuitive visualisation of pseudonymisation performance for speech signals and two novel metrics for objective assessment. They reflect the two, key pseudonymisation requirements of de-identification and voice distinctiveness.
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https://hal.archives-ouvertes.fr/hal-02925559
Contributor : Paul-Gauthier Noé <>
Submitted on : Sunday, August 30, 2020 - 1:28:23 PM
Last modification on : Thursday, September 24, 2020 - 3:24:23 PM
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Paul-Gauthier Noé, Jean-François Bonastre, Driss Matrouf, Natalia Tomashenko, Andreas Nautsch, et al.. Speech Pseudonymisation Assessment Using Voice Similarity Matrices. Interspeech 2020, Oct 2020, Shanghai, China. ⟨hal-02925559⟩

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