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Many speech enhancement (SE) methods rely on continuous representations. Recently, discrete audio tokens have been explored to enable autoregressive generation for SE. However, it remains unclear whether discretization itself consistently…

Sound · Computer Science 2026-03-24 Jingyi Li , Luca Della Libera , Mirco Ravanelli , Cem Subakan

Representation learning plays a central role in structuring internal embeddings to capture the statistical properties of language, influencing the coherence and contextual consistency of generated text. Statistical Coherence Alignment is…

Computation and Language · Computer Science 2025-08-11 Jonathan Gale , Godfrey Aldington , Harriet Thistlewood , Thomas Tattershall , Basil Wentworth , Vincent Enoasmo

Though significant progress has been made for the voice conversion (VC) of typical speech, VC for atypical speech, e.g., dysarthric and second-language (L2) speech, remains a challenge, since it involves correcting for atypical prosody…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-26 Disong Wang , Songxiang Liu , Lifa Sun , Xixin Wu , Xunying Liu , Helen Meng

Speech codecs that convert continuous speech signals into discrete tokens have become essential for speech language models. However, existing codecs struggle to balance high-quality reconstruction with semantically rich representations,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-16 Wenxi Chen , Xinsheng Wang , Ruiqi Yan , Yushen Chen , Zhikang Niu , Ziyang Ma , Xiquan Li , Yuzhe Liang , Hanlin Wen , Shunshun Yin , Ming Tao , Xie Chen

Recent autoregressive transformer-based speech enhancement (SE) methods have shown promising results by leveraging advanced semantic understanding and contextual modeling of speech. However, these approaches often rely on complex…

Sound · Computer Science 2025-10-03 Luca A. Lanzendörfer , Frédéric Berdoz , Antonis Asonitis , Roger Wattenhofer

Open-vocabulary semantic segmentation is a challenging task, which requires the model to output semantic masks of an image beyond a close-set vocabulary. Although many efforts have been made to utilize powerful CLIP models to accomplish…

Computer Vision and Pattern Recognition · Computer Science 2024-06-17 Xiangheng Shan , Dongyue Wu , Guilin Zhu , Yuanjie Shao , Nong Sang , Changxin Gao

In incremental learning, enhancing the generality of knowledge is crucial for adapting to dynamic data inputs. It can develop generalized representations or more balanced decision boundaries, preventing the degradation of long-term…

Computer Vision and Pattern Recognition · Computer Science 2026-03-16 Hongyang Chen , Shaoling Pu , Lingyu Zheng , Zhongwu Sun

It remains a significant challenge to compress images at extremely low bitrate while achieving both semantic consistency and high perceptual quality. Inspired by human progressive perception mechanism, we propose a Semantically Disentangled…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Juan Song , Lijie Yang , Mingtao Feng

Understanding how explicit theoretical features are encoded in opaque neural systems is a central challenge now common to neuroscience and AI. We introduce Metric Learning Encoding Models (MLEMs) to address this challenge most directly as a…

Computation and Language · Computer Science 2025-11-17 Louis Jalouzot , Christophe Pallier , Emmanuel Chemla , Yair Lakretz

Large-scale multimodal contrastive learning has recently achieved impressive success in learning rich and transferable representations, yet it remains fundamentally limited by the uniform treatment of feature dimensions and the neglect of…

Machine Learning · Computer Science 2026-02-11 Jinjin Guo , Yexin Li , Zhichao Huang , Jun Fang , Zhiyuan Liu , Chao Liu , Pengzhang Liu , Qixia Jiang

A mainstream type of current self-supervised learning methods pursues a general-purpose representation that can be well transferred to downstream tasks, typically by optimizing on a given pretext task such as instance discrimination. In…

Computer Vision and Pattern Recognition · Computer Science 2022-10-21 Xin Liu , Zhongdao Wang , Yali Li , Shengjin Wang

Real-time speech enhancement (SE) is essential to online speech communication. Causal SE models use only the previous context while predicting future information, such as phoneme continuation, may help performing causal SE. The phonetic…

Audio and Speech Processing · Electrical Eng. & Systems 2024-12-30 Emiru Tsunoo , Yuki Saito , Wataru Nakata , Hiroshi Saruwatari

Large Audio Language Models (LALMs) have been widely applied in real-time scenarios, such as in-car assistants and online meeting comprehension. In practice, audio inputs are often corrupted by device and environmental noise, leading to…

Sound · Computer Science 2026-01-13 Yuanhe Zhang , Jiayu Tian , Yibo Zhang , Shilinlu Yan , Liang Lin , Zhenhong Zhou , Li Sun , Sen Su

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

The popular frameworks for self-supervised learning of speech representations have largely focused on frame-level masked prediction of speech regions. While this has shown promising downstream task performance for speech recognition and…

Computation and Language · Computer Science 2025-07-22 Varun Krishna , Sriram Ganapathy

In streaming settings, speech recognition models have to map sub-sequences of speech to text before the full audio stream becomes available. However, since alignment information between speech and text is rarely available during training,…

Audio and Speech Processing · Electrical Eng. & Systems 2023-12-20 Oscar Chang , Dongseong Hwang , Olivier Siohan

We investigate unsupervised models that can map a variable-duration speech segment to a fixed-dimensional representation. In settings where unlabelled speech is the only available resource, such acoustic word embeddings can form the basis…

Computation and Language · Computer Science 2019-04-16 Herman Kamper

Language model (LM)-based speech enhancement (SE) can generate natural-sounding speech, but under severe noise it often suffers from unreliable conditioning, leading to perceptually plausible yet linguistically incorrect outputs. To address…

Audio and Speech Processing · Electrical Eng. & Systems 2026-05-12 Zheng Wang , Xiaobin Rong , Hang Su , Tianyi Tan , Junnan Wu , Lichun Fan , Zhenbo Luo , Jian Luan , Jing Lu

Human speech can be characterized by different components, including semantic content, speaker identity and prosodic information. Significant progress has been made in disentangling representations for semantic content and speaker identity…

Sound · Computer Science 2023-09-27 Leyuan Qu , Taihao Li , Cornelius Weber , Theresa Pekarek-Rosin , Fuji Ren , Stefan Wermter

Most current speech enhancement (SE) methods recover clean speech from noisy inputs by directly estimating time-frequency masks or spectrums. However, these approaches often neglect the distinct attributes, such as semantic content and…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-21 Yang Xiang , Canan Huang , Desheng Hu , Jingguang Tian , Xinhui Hu , Chao Zhang