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Speech tokenization enables discrete representation and facilitates speech language modeling. However, existing neural codecs capture low-level acoustic features, overlooking the semantic and contextual cues inherent to human speech. While…

Speech tokenizers serve as foundational components for speech language models, yet current designs exhibit several limitations, including: 1) dependence on multi-layer residual vector quantization structures or high frame rates, 2) reliance…

Sound · Computer Science 2025-08-26 Yuancheng Wang , Dekun Chen , Xueyao Zhang , Junan Zhang , Jiaqi Li , Zhizheng Wu

Speech tokenizers are foundational to speech language models, yet existing approaches face two major challenges: (1) balancing trade-offs between encoding semantics for understanding and acoustics for reconstruction, and (2) achieving low…

Unified speech foundation models require a holistic tokenization space that is both learnable by language models and decodable into high-quality waveforms. Existing speech tokenizers, however, often fail to satisfy these requirements…

Sound · Computer Science 2026-05-29 Bohan Li , Shi Lian , Hankun Wang , Yiwei Guo , Yu Xi , Zhihan Li , Da Zheng , Colin Zhang , Kai Yu

The massive growth of self-supervised learning (SSL) has been witnessed in language, vision, speech, and audio domains over the past few years. While discrete label prediction is widely adopted for other modalities, the state-of-the-art…

Audio and Speech Processing · Electrical Eng. & Systems 2022-12-20 Sanyuan Chen , Yu Wu , Chengyi Wang , Shujie Liu , Daniel Tompkins , Zhuo Chen , Furu Wei

One-shot voice conversion has received significant attention since only one utterance from source speaker and target speaker respectively is required. Moreover, source speaker and target speaker do not need to be seen during training.…

Sound · Computer Science 2021-06-22 Hongqiang Du , Lei Xie

Tokenization is a foundational step in natural language processing (NLP) tasks, bridging raw text and language models. Existing tokenization approaches like Byte-Pair Encoding (BPE) originate from the field of data compression, and it has…

Computation and Language · Computer Science 2024-10-08 Craig W. Schmidt , Varshini Reddy , Haoran Zhang , Alec Alameddine , Omri Uzan , Yuval Pinter , Chris Tanner

Multi-talker speech recognition and target-talker speech recognition, both involve transcription in multi-talker contexts, remain significant challenges. However, existing methods rarely attempt to simultaneously address both tasks. In this…

Sound · Computer Science 2024-08-27 Lingwei Meng , Jiawen Kang , Yuejiao Wang , Zengrui Jin , Xixin Wu , Xunying Liu , Helen Meng

Deep learning-based models have greatly advanced the performance of speech enhancement (SE) systems. However, two problems remain unsolved, which are closely related to model generalizability to noisy conditions: (1) mismatched noisy…

Audio and Speech Processing · Electrical Eng. & Systems 2020-12-29 Cheng Yu , Ryandhimas E. Zezario , Syu-Siang Wang , Jonathan Sherman , Yi-Yen Hsieh , Xugang Lu , Hsin-Min Wang , Yu Tsao

Omnimodal large language models (OmniLLMs) jointly process audio and visual streams, but the resulting long multimodal token sequences make inference prohibitively expensive. Existing compression methods typically rely on fixed window…

Multimedia · Computer Science 2026-03-18 Bingzhou Li , Tao Huang

Rapid growth in speech data demands adaptive models, as traditional static methods fail to keep pace with dynamic and diverse speech information. We introduce continuous speech learning, a new set-up targeting at bridging the adaptation gap…

Computation and Language · Computer Science 2025-06-04 Guitao Wang , Jinming Zhao , Hao Yang , Guilin Qi , Tongtong Wu , Gholamreza Haffari

Text-guided image generation has witnessed unprecedented progress due to the development of diffusion models. Beyond text and image, sound is a vital element within the sphere of human perception, offering vivid representations and…

Graphics · Computer Science 2023-06-21 Yue Yang , Kaipeng Zhang , Yuying Ge , Wenqi Shao , Zeyue Xue , Yu Qiao , Ping Luo

Image tokenizers form the foundation of modern text-to-image generative models but are notoriously difficult to train. Furthermore, most existing text-to-image models rely on large-scale, high-quality private datasets, making them…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Dongwon Kim , Ju He , Qihang Yu , Chenglin Yang , Xiaohui Shen , Suha Kwak , Liang-Chieh Chen

Discrete audio representations are gaining traction in speech modeling due to their interpretability and compatibility with large language models, but are not always optimized for noisy or real-world environments. Building on existing works…

Computation and Language · Computer Science 2025-10-30 Shreyas Gopal , Ashutosh Anshul , Haoyang Li , Yue Heng Yeo , Hexin Liu , Eng Siong Chng

Tools to generate high quality synthetic speech signal that is perceptually indistinguishable from speech recorded from human speakers are easily available. Several approaches have been proposed for detecting synthetic speech. Many of these…

Unified models aim to support both understanding and generation by encoding images into discrete tokens and processing them alongside text within a single autoregressive framework. This unified design offers architectural simplicity and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Ziyao Wang , Chen Chen , Jingtao Li , Weiming Zhuang , Jiabo Huang , Ang Li , Lingjuan Lyu

Unsupervised representation learning of speech has been of keen interest in recent years, which is for example evident in the wide interest of the ZeroSpeech challenges. This work presents a new method for learning frame level…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-18 Mingjie Chen , Thomas Hain

In speech deepfake detection, one of the critical aspects is developing detectors able to generalize on unseen data and distinguish fake signals across different datasets. Common approaches to this challenge involve incorporating diverse…

Sound · Computer Science 2024-09-27 Davide Salvi , Viola Negroni , Luca Bondi , Paolo Bestagini , Stefano Tubaro

Discrete audio representation, aka audio tokenization, has seen renewed interest driven by its potential to facilitate the application of text language modeling approaches in audio domain. To this end, various compression and…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-21 Krishna C. Puvvada , Nithin Rao Koluguri , Kunal Dhawan , Jagadeesh Balam , Boris Ginsburg

Representing speech as discrete tokens provides a framework for transforming speech into a format that closely resembles text, thus enabling the use of speech as an input to the widely successful large language models (LLMs). Currently,…