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In the era of big data, remarkable advancements have been achieved in personalized speech generation techniques that utilize speaker attributes, including voice and speaking style, to generate deepfake speech. This has also amplified global…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-10 Liping Chen , Kong Aik Lee , Zhen-Hua Ling , Xin Wang , Rohan Kumar Das , Tomoki Toda , Haizhou Li

Most of the existing speaker anonymization research has focused on single-speaker audio, leading to the development of techniques and evaluation metrics optimized for such condition. This study addresses the significant challenge of speaker…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-13 Natalia Tomashenko , Junichi Yamagishi , Xin Wang , Yun Liu , Emmanuel Vincent

Self-supervised learning (SSL) has significantly advanced acoustic representation learning. However, most existing models are optimised for either speech or audio event understanding, resulting in a persistent gap between these two domains.…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-05 Xiaoyu Yang , Yifan Yang , Zengrui Jin , Ziyun Cui , Wen Wu , Baoxiang Li , Chao Zhang , Phil Woodland

We examine the text-free speech representations of raw audio obtained from a self-supervised learning (SSL) model by analyzing the synthesized speech using the SSL representations instead of conventional text representations. Since raw…

Computation and Language · Computer Science 2024-12-05 Joonyong Park , Daisuke Saito , Nobuaki Minematsu

Advances in speech technology now allow unprecedented access to personally identifiable information through speech. To protect such information, the differential privacy field has explored ways to anonymize speech while preserving its…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-06 Zexin Cai , Henry Li Xinyuan , Ashi Garg , Leibny Paola García-Perera , Kevin Duh , Sanjeev Khudanpur , Nicholas Andrews , Matthew Wiesner

Self-supervised learning (SSL) is a long-standing goal for speech processing, since it utilizes large-scale unlabeled data and avoids extensive human labeling. Recent years witness great successes in applying self-supervised learning in…

Computation and Language · Computer Science 2021-10-13 Sanyuan Chen , Yu Wu , Chengyi Wang , Zhengyang Chen , Zhuo Chen , Shujie Liu , Jian Wu , Yao Qian , Furu Wei , Jinyu Li , Xiangzhan Yu

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…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-19 Francisco Teixeira , Alberto Abad , Bhiksha Raj , Isabel Trancoso

Audio anti-spoofing for automatic speaker verification aims to safeguard users' identities from spoofing attacks. Although state-of-the-art spoofing countermeasure(CM) models perform well on specific datasets, they lack generalization when…

Sound · Computer Science 2023-06-02 Hye-jin Shim , Jee-weon Jung , Tomi Kinnunen

Voice anonymization techniques have been found to successfully obscure a speaker's acoustic identity in short, isolated utterances in benchmarks such as the VoicePrivacy Challenge. In practice, however, utterances seldom occur in isolation:…

Sound · Computer Science 2026-02-05 Cristina Aggazzotti , Ashi Garg , Zexin Cai , Nicholas Andrews

Code-switching (CS) is common in daily conversations where more than one language is used within a sentence. The difficulties of CS speech recognition lie in alternating languages and the lack of transcribed data. Therefore, this paper uses…

Computation and Language · Computer Science 2021-10-08 Liang-Hsuan Tseng , Yu-Kuan Fu , Heng-Jui Chang , Hung-yi Lee

The recently proposed x-vector based anonymization scheme converts any input voice into that of a random pseudo-speaker. In this paper, we present a flexible pseudo-speaker selection technique as a baseline for the first VoicePrivacy…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-19 Brij Mohan Lal Srivastava , Natalia Tomashenko , Xin Wang , Emmanuel Vincent , Junichi Yamagishi , Mohamed Maouche , Aurélien Bellet , Marc Tommasi

Self-supervised learning (SSL) has transformed speech processing, with benchmarks such as SUPERB establishing fair comparisons across diverse downstream tasks. Despite it's security-critical importance, Audio deepfake detection has remained…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-10 Hashim Ali , Nithin Sai Adupa , Surya Subramani , Hafiz Malik

Facilitated by the speech generation framework that disentangles speech into content, speaker, and prosody, voice anonymization is accomplished by substituting the original speaker embedding vector with that of a pseudo-speaker. In this…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-04 Zeyan Liu , Liping Chen , Kong Aik Lee , Zhenhua Ling

In an age of voice-enabled technology, voice anonymization offers a solution to protect people's privacy, provided these systems work equally well across subgroups. This study investigates bias in voice anonymization systems within the…

Audio and Speech Processing · Electrical Eng. & Systems 2023-11-28 Anna Leschanowsky , Ünal Ege Gaznepoglu , Nils Peters

Recent advances in machine learning techniques are enabling Automated Speech Recognition (ASR) more accurate and practical. The evidence of this can be seen in the rising number of smart devices with voice processing capabilities. More and…

Cryptography and Security · Computer Science 2022-03-15 Yogachandran Rahulamathavan

We propose DarkStream, a streaming speech synthesis model for real-time speaker anonymization. To improve content encoding under strict latency constraints, DarkStream combines a causal waveform encoder, a short lookahead buffer, and…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-08 Waris Quamer , Ricardo Gutierrez-Osuna

Self-supervised learning (SSL) has grown in interest within the speech processing community, since it produces representations that are useful for many downstream tasks. SSL uses global and contextual methods to produce robust…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-08 Subrina Sultana , Donald S. Williamson

Voice anonymization systems aim to protect speaker privacy by obscuring vocal traits while preserving the linguistic content relevant for downstream applications. However, because these linguistic cues remain intact, they can be exploited…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-21 Ahmad Aloradi , Ünal Ege Gaznepoglu , Emanuël A. P. Habets , Daniel Tenbrinck

In recent years, the need for privacy preservation when manipulating or storing personal data, including speech , has become a major issue. In this paper, we present a system addressing the speaker-level anonymization problem. We propose…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-29 Francesco Nespoli , Daniel Barreda , Joerg Bitzer , Patrick A. Naylor

Speaker anonymization aims to conceal a speaker's identity while preserving content information in speech. Current mainstream neural-network speaker anonymization systems disentangle speech into prosody-related, content, and speaker…

Sound · Computer Science 2023-09-14 Xiaoxiao Miao , Xin Wang , Erica Cooper , Junichi Yamagishi , Natalia Tomashenko