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We show for the first time that learning powerful representations from speech audio alone followed by fine-tuning on transcribed speech can outperform the best semi-supervised methods while being conceptually simpler. wav2vec 2.0 masks the…

Computation and Language · Computer Science 2020-10-23 Alexei Baevski , Henry Zhou , Abdelrahman Mohamed , Michael Auli

The use of audio recordings of human speech to train LLMs poses privacy concerns due to these models' potential to generate outputs that closely resemble artifacts in the training data. In this study, we propose a speaker privacy-preserving…

Self-supervised learning enables the training of large neural models without the need for large, labeled datasets. It has been generating breakthroughs in several fields, including computer vision, natural language processing, biology, and…

Computation and Language · Computer Science 2023-12-19 Luis Lugo , Valentin Vielzeuf

In recent years, large language models have achieved significant success in generative tasks related to speech, audio, music, and other signal domains. A crucial element of these models is the discrete acoustic codecs, which serve as an…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-05 Shengpeng Ji , Minghui Fang , Jialong Zuo , Ziyue Jiang , Dingdong Wang , Hanting Wang , Hai Huang , Zhou Zhao

We explore unsupervised pre-training for speech recognition by learning representations of raw audio. wav2vec is trained on large amounts of unlabeled audio data and the resulting representations are then used to improve acoustic model…

Computation and Language · Computer Science 2019-09-12 Steffen Schneider , Alexei Baevski , Ronan Collobert , Michael Auli

Automatic speech recognition (ASR) has gained remarkable successes thanks to recent advances of deep learning, but it usually degrades significantly under real-world noisy conditions. Recent works introduce speech enhancement (SE) as…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-19 Yuchen Hu , Chen Chen , Qiushi Zhu , Eng Siong Chng

Significant strides have been made in creating voice identity representations using speech data. However, the same level of progress has not been achieved for singing voices. To bridge this gap, we suggest a framework for training singer…

Sound · Computer Science 2024-01-11 Bernardo Torres , Stefan Lattner , Gaël Richard

Recently, many efforts have been made to explore how the brain processes speech using electroencephalographic (EEG) signals, where deep learning-based approaches were shown to be applicable in this field. In order to decode speech signals…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-24 Qiushi Zhu , Xiaoying Zhao , Jie Zhang , Yu Gu , Chao Weng , Yuchen Hu

Audio Word2Vec offers vector representations of fixed dimensionality for variable-length audio segments using Sequence-to-sequence Autoencoder (SA). These vector representations are shown to describe the sequential phonetic structures of…

Computation and Language · Computer Science 2018-02-20 Chia-Hao Shen , Janet Y. Sung , Hung-Yi Lee

Visual Speech Recognition (VSR) differs from the common perception tasks as it requires deeper reasoning over the video sequence, even by human experts. Despite the recent advances in VSR, current approaches rely on labeled data to fully…

Self-supervised learning methods such as wav2vec 2.0 have shown promising results in learning speech representations from unlabelled and untranscribed speech data that are useful for speech recognition. Since these representations are…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-22 Shehzeen Hussain , Van Nguyen , Shuhua Zhang , Erik Visser

Neural audio codecs discretize speech via residual vector quantization (RVQ), forming a coarse-to-fine hierarchy across quantizers. While codec models have been explored for representation learning, their discrete structure remains…

Sound · Computer Science 2026-03-19 Jinyang Wu , Zihan Pan , Qiquan Zhang , Sailor Hardik Bhupendra , Soumik Mondal

We argue that time series analysis is fundamentally different in nature to either vision or natural language processing with respect to the forms of meaningful self-supervised learning tasks that can be defined. Motivated by this insight,…

Machine Learning · Computer Science 2023-12-13 Navid Mohammadi Foumani , Chang Wei Tan , Geoffrey I. Webb , Hamid Rezatofighi , Mahsa Salehi

Speech codecs are traditionally optimized for waveform fidelity, allocating bits to preserve acoustic detail even when much of it can be inferred from linguistic structure. This leads to inefficient compression and suboptimal performance on…

Sound · Computer Science 2025-12-29 Liuyang Bai , Weiyi Lu , Li Guo

Text-guided sound separation enables flexible audio editing, assistive listening, and open-domain source extraction, but systems such as AudioSep remain too expensive for low-latency edge or codec-mediated deployment. Existing neural audio…

Sound · Computer Science 2026-04-28 Adhiraj Banerjee , Vipul Arora

The vector representations of fixed dimensionality for words (in text) offered by Word2Vec have been shown to be very useful in many application scenarios, in particular due to the semantic information they carry. This paper proposes a…

Sound · Computer Science 2016-06-14 Yu-An Chung , Chao-Chung Wu , Chia-Hao Shen , Hung-Yi Lee , Lin-Shan Lee

Collecting speech data is an important step in training speech recognition systems and other speech-based machine learning models. However, the issue of privacy protection is an increasing concern that must be addressed. The current study…

We propose emotion2vec, a universal speech emotion representation model. emotion2vec is pre-trained on open-source unlabeled emotion data through self-supervised online distillation, combining utterance-level loss and frame-level loss…

Computation and Language · Computer Science 2023-12-27 Ziyang Ma , Zhisheng Zheng , Jiaxin Ye , Jinchao Li , Zhifu Gao , Shiliang Zhang , Xie Chen

To extract robust deep representations from long sequential modeling of speech data, we propose a self-supervised learning approach, namely Contrastive Separative Coding (CSC). Our key finding is to learn such representations by separating…

Audio and Speech Processing · Electrical Eng. & Systems 2021-03-02 Jun Wang , Max W. Y. Lam , Dan Su , Dong Yu

We explore self-supervised models that can be potentially deployed on mobile devices to learn general purpose audio representations. Specifically, we propose methods that exploit the temporal context in the spectrogram domain. One method…

Audio and Speech Processing · Electrical Eng. & Systems 2019-05-29 Marco Tagliasacchi , Beat Gfeller , Félix de Chaumont Quitry , Dominik Roblek