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De-identification of data used for automatic speech recognition modeling is a critical component in protecting privacy, especially in the medical domain. However, simply removing all personally identifiable information (PII) from end-to-end…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-13 Martin Flechl , Shou-Chun Yin , Junho Park , Peter Skala

The emergence of AI legislation has increased the need to assess the ethical compliance of high-risk AI systems. Traditional auditing methods rely on platforms' application programming interfaces (APIs), where responses to queries are…

Despite advances in language and speech technologies, no open-source system enables full speech-to-speech, multi-turn dialogue with integrated tool use and agentic reasoning. We introduce AURA (Agent for Understanding, Reasoning, and…

Artificial Intelligence · Computer Science 2025-07-01 Leander Melroy Maben , Gayathri Ganesh Lakshmy , Srijith Radhakrishnan , Siddhant Arora , Shinji Watanabe

The growing reliance on large-scale speech data has made privacy protection a critical concern. However, existing anonymization approaches often degrade data utility, for example by disrupting acoustic continuity or reducing vocal…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-21 Yunchong Xiao , Yuxiang Zhao , Ziyang Ma , Shuai Wang , Kai Yu , Jiachun Liao , Xie Chen

Reliable detection of personally identifiable information (PII) is increasingly important across modern data-processing systems, yet the task remains difficult: PII spans are heterogeneous, locale-dependent, context-sensitive, and often…

Computation and Language · Computer Science 2026-05-12 Urchade Zaratiana , Ash Lewis , George Hurn-Maloney

The development of privacy-preserving automatic speaker verification systems has been the focus of a number of studies with the intent of allowing users to authenticate themselves without risking the privacy of their voice. However, current…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-28 Francisco Teixeira , Alberto Abad , Bhiksha Raj , Isabel Trancoso

We present a concept to achieve non-repudiation for natural language conversations by electronically signing packet-based, digital, voice communication. Signing a VoIP-based conversation means to protect the integrity and authenticity of…

Cryptography and Security · Computer Science 2007-05-23 Christian Hett , Nicolai Kuntze , Andreas U. Schmidt

Sanitizing sensitive text data typically involves removing personally identifiable information (PII) or generating synthetic data under the assumption that these methods adequately protect privacy; however, their effectiveness is often only…

Cryptography and Security · Computer Science 2026-03-17 Rui Xin , Niloofar Mireshghallah , Shuyue Stella Li , Michael Duan , Hyunwoo Kim , Yejin Choi , Yulia Tsvetkov , Sewoong Oh , Pang Wei Koh

Anonymous metadata-private voice call protocols suffer from high delays and so far cannot provide group call functionality. Anonymization inherently yields delay penalties, and scaling signalling and communication to groups of users…

Cryptography and Security · Computer Science 2024-04-16 Christoph Coijanovic , Akim Stark , Daniel Schadt , Thorsten Strufe

The subtlety of emotional expressions makes implicit emotion analysis (IEA) particularly sensitive to user-specific characteristics. Current studies personalize emotion analysis by focusing on the author but neglect the impact of the…

Computation and Language · Computer Science 2025-05-23 Jian Liao , Yu Feng , Yujin Zheng , Jun Zhao , Suge Wang , Jianxing Zheng

In this paper, we present AltVoice -- a system designed to help user's protect their privacy when using remotely accessed voice services. The system allows a user to conceal their true voice identity information with no cooperation from the…

Cryptography and Security · Computer Science 2022-02-15 Henry Turner , Giulio Lovisotto , Simon Eberz , Ivan Martinovic

Conversational agents are increasingly integrated into the most private and intimate aspects of users' lives, from discussions of mental health to financial decisions. As a result, these systems have access to reams of sensitive user data.…

Human-Computer Interaction · Computer Science 2026-05-29 Jacob Erickson

Professional translators often dictate their translations orally and have them typed afterwards. The TransTalk project aims at automating the second part of this process. Its originality as a dictation system lies in the fact that both the…

Online medical consultation platforms, while convenient, are undermined by significant privacy risks that erode user trust. We first conducted in-depth semi-structured interviews with 12 users to understand their perceptions of security and…

Human-Computer Interaction · Computer Science 2025-08-04 Shuning Zhang , Ying Ma , Yongquan `Owen' Hu , Ting Dang , Hong Jia , Xin Yi , Hewu Li

With the increasing use of conversational AI systems, there is growing concern over privacy leaks, especially when users share sensitive personal data in interactions with Large Language Models (LLMs). Conversations shared with these models…

Computation and Language · Computer Science 2025-11-03 Jayden Serenari , Stephen Lee

As conversational AI systems become more realistic and widely deployed, users are increasingly uncertain about whether they are interacting with a human or an AI system. When AI identity is unclear, users may unwittingly share sensitive…

Human-Computer Interaction · Computer Science 2026-03-19 Anna Gausen , Sarenne Wallbridge , Hannah Rose Kirk , Jennifer Williams , Christopher Summerfield

Dialogue systems have the potential to change how people interact with machines but are highly dependent on the quality of the data used to train them. It is therefore important to develop good dialogue annotation tools which can improve…

Computation and Language · Computer Science 2019-11-06 Edward Collins , Nikolai Rozanov , Bingbing Zhang

Given the increasing privacy concerns from identity theft and the re-identification of speakers through content in the speech field, this paper proposes a prompt-based speech generation pipeline that ensures dual anonymization of both…

Sound · Computer Science 2025-07-11 Belinda Soh Hui Hui , Xiaoxiao Miao , Xin Wang

Accurate recognition of specific categories, such as persons' names, dates or other identifiers is critical in many Automatic Speech Recognition (ASR) applications. As these categories represent personal information, ethical use of this…

We introduce LlamaPIE, the first real-time proactive assistant designed to enhance human conversations through discreet, concise guidance delivered via hearable devices. Unlike traditional language models that require explicit user…

Machine Learning · Computer Science 2025-07-30 Tuochao Chen , Nicholas Batchelder , Alisa Liu , Noah Smith , Shyamnath Gollakota