Search Results for author: Pierre Champion

Found 9 papers, 4 papers with code

The VoicePrivacy 2024 Challenge Evaluation Plan

1 code implementation3 Apr 2024 Natalia Tomashenko, Xiaoxiao Miao, Pierre Champion, Sarina Meyer, Xin Wang, Emmanuel Vincent, Michele Panariello, Nicholas Evans, Junichi Yamagishi, Massimiliano Todisco

The task of the challenge is to develop a voice anonymization system for speech data which conceals the speaker's voice identity while protecting linguistic content and emotional states.

Anonymizing Speech: Evaluating and Designing Speaker Anonymization Techniques

2 code implementations5 Aug 2023 Pierre Champion

The growing use of voice user interfaces has led to a surge in the collection and storage of speech data.

Quantization Voice Cloning +1

Evaluation of Speaker Anonymization on Emotional Speech

no code implementations15 Apr 2023 Hubert Nourtel, Pierre Champion, Denis Jouvet, Anthony Larcher, Marie Tahon

This paper studies the impact of the speaker anonymization baseline system of the VPC on emotional information present in speech utterances.

Automatic Speech Recognition Emotion Recognition +3

The VoicePrivacy 2022 Challenge Evaluation Plan

1 code implementation23 Mar 2022 Natalia Tomashenko, Xin Wang, Xiaoxiao Miao, Hubert Nourtel, Pierre Champion, Massimiliano Todisco, Emmanuel Vincent, Nicholas Evans, Junichi Yamagishi, Jean-François Bonastre

Participants apply their developed anonymization systems, run evaluation scripts and submit objective evaluation results and anonymized speech data to the organizers.

Speaker Verification

Privacy-Preserving Speech Representation Learning using Vector Quantization

no code implementations15 Mar 2022 Pierre Champion, Denis Jouvet, Anthony Larcher

With the popularity of virtual assistants (e. g., Siri, Alexa), the use of speech recognition is now becoming more and more widespread. However, speech signals contain a lot of sensitive information, such as the speaker's identity, which raises privacy concerns. The presented experiments show that the representations extracted by the deep layers of speech recognition networks contain speaker information. This paper aims to produce an anonymous representation while preserving speech recognition performance. To this end, we propose to use vector quantization to constrain the representation space and induce the network to suppress the speaker identity. The choice of the quantization dictionary size allows to configure the trade-off between utility (speech recognition) and privacy (speaker identity concealment).

Privacy Preserving Quantization +3

On the invertibility of a voice privacy system using embedding alignement

1 code implementation8 Oct 2021 Pierre Champion, Thomas Thebaud, Gaël Le Lan, Anthony Larcher, Denis Jouvet

This paper explores various attack scenarios on a voice anonymization system using embeddings alignment techniques.

Translation

Evaluating X-vector-based Speaker Anonymization under White-box Assessment

no code implementations24 Sep 2021 Pierre Champion, Denis Jouvet, Anthony Larcher

In the scenario of the Voice Privacy challenge, anonymization is achieved by converting all utterances from a source speaker to match the same target identity; this identity being randomly selected.

A Study of F0 Modification for X-Vector Based Speech Pseudonymization Across Gender

no code implementations21 Jan 2021 Pierre Champion, Denis Jouvet, Anthony Larcher

Speech pseudonymization aims at altering a speech signal to map the identifiable personal characteristics of a given speaker to another identity.

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