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This paper presents LongCat-Audio-Codec, an audio tokenizer and detokenizer solution designed for industrial grade end-to-end speech large language models. By leveraging a decoupled model architecture and a multistage training strategy,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-20 Xiaohan Zhao , Hongyu Xiang , Shengze Ye , Song Li , Zhengkun Tian , Guanyu Chen , Ke Ding , Guanglu Wan

We propose \textbf{U-Codec}, an \textbf{U}ltra low frame-rate neural speech \textbf{Codec} that achieves high-fidelity reconstruction and fast speech generation at an extremely low frame-rate of 5Hz (5 frames per second). Extreme…

Sound · Computer Science 2025-10-21 Xusheng Yang , Long Zhou , Wenfu Wang , Kai Hu , Shulin Feng , Chenxing Li , Meng Yu , Dong Yu , Yuexian Zou

Training a unified model integrating video-to-audio (V2A), text-to-audio (T2A), and joint video-text-to-audio (VT2A) generation offers significant application flexibility, yet faces two unexplored foundational challenges: (1) the scarcity…

Sound · Computer Science 2026-04-30 Yusheng Dai , Zehua Chen , Yuxuan Jiang , Baolong Gao , Qiuhong Ke , Jianfei Cai , Jun Zhu

Retrieval Augmented Generation (RAG) has gained widespread adoption owing to its capacity to empower large language models (LLMs) to integrate external knowledge. However, existing RAG frameworks are primarily designed for text-based LLMs…

Sound · Computer Science 2025-02-21 Yifu Chen , Shengpeng Ji , Haoxiao Wang , Ziqing Wang , Siyu Chen , Jinzheng He , Jin Xu , Zhou Zhao

Neural Audio Codecs (NACs) can reduce transmission overhead by performing compact compression and reconstruction, which also aim to bridge the gap between continuous and discrete signals. Existing NACs can be divided into two categories:…

Sound · Computer Science 2026-01-07 Zhisheng Zhang , Xiang Li , Yixuan Zhou , Jing Peng , Shengbo Cai , Guoyang Zeng , Zhiyong Wu

The residual vector quantization (RVQ) technique plays a central role in recent advances in neural audio codecs. These models effectively synthesize high-fidelity audio from a limited number of codes due to the hierarchical structure among…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-24 Hyeongju Kim , Junhyeok Lee , Jacob Morton , Juheon Lee , Jinhyeok Yang

Voice design from natural language descriptions is emerging as a new task in text-to-speech multimodal generation, aiming to synthesize speech with target timbre and speaking style without relying on reference audio. However, existing…

Sound · Computer Science 2026-04-10 Xiaosu Su , Zihan Sun , Peilei Jia , Jun Gao

Audio-text retrieval systems based on Contrastive Language-Audio Pretraining (CLAP) achieve strong performance on traditional benchmarks; however, these benchmarks rely on caption-style queries that differ substantially from real-world…

Sound · Computer Science 2026-04-21 HaeJun Yoo , Yongseop Shin , Insung Lee , Myoung-Wan Koo , Du-Seong Chang

Audio tokenization has emerged as a critical component in end-to-end audio language models, enabling efficient discrete representation learning for both audio understanding and generation tasks. However, existing audio tokenizers face…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-15 Xiangyu Zhang , Benjamin John Southwell , Siqi Pan , Xinlei Niu , Beena Ahmed , Julien Epps

Recent advances in large language models have facilitated the development of unified speech language models (SLMs) capable of supporting multiple speech tasks within a shared architecture. However, tasks such as automatic speech recognition…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-24 Yuke Si , Runyan Yang , Yingying Gao , Junlan Feng , Chao Deng , Shilei Zhang

Recently, audio generation tasks have attracted considerable research interests. Precise temporal controllability is essential to integrate audio generation with real applications. In this work, we propose a temporal controlled audio…

Sound · Computer Science 2024-07-18 Zeyu Xie , Xuenan Xu , Zhizheng Wu , Mengyue Wu

Neural autoencoders underpin generative models. Practical, large-scale use of neural autoencoders for generative modeling necessitates fast encoding, low latent rates, and a single model across representations. Existing approaches are…

Sound · Computer Science 2026-02-23 Jonah Casebeer , Ge Zhu , Zhepei Wang , Nicholas J. Bryan

Language-referred audio-visual segmentation (Ref-AVS) aims to segment target objects described by natural language by jointly reasoning over video, audio, and text. Beyond generating segmentation masks, providing rich and interpretable…

Computer Vision and Pattern Recognition · Computer Science 2026-02-05 Jinxing Zhou , Yanghao Zhou , Yaoting Wang , Zongyan Han , Jiaqi Ma , Henghui Ding , Rao Muhammad Anwer , Hisham Cholakkal

Generative information retrieval, encompassing two major tasks of Generative Document Retrieval (GDR) and Grounded Answer Generation (GAR), has gained significant attention in the area of information retrieval and natural language…

Information Retrieval · Computer Science 2023-12-19 Xiaoxi Li , Yujia Zhou , Zhicheng Dou

Code decompilation analysis is a fundamental yet challenging task in malware reverse engineering, particularly due to the pervasive use of sophisticated obfuscation techniques. Although recent large language models (LLMs) have shown promise…

Cryptography and Security · Computer Science 2026-04-08 Hamed Jelodar , Samita Bai , Tochukwu Emmanuel Nwankwo , Parisa Hamedi , Mohammad Meymani , Roozbeh Razavi-Far , Ali A. Ghorbani

This document describes version 0.10 of TorchAudio: building blocks for machine learning applications in the audio and speech processing domain. The objective of TorchAudio is to accelerate the development and deployment of machine learning…

Speech separation refers to extracting each individual speech source in a given mixed signal. Recent advancements in speech separation and ongoing research in this area, have made these approaches as promising techniques for pre-processing…

Machine Learning · Computer Science 2019-12-18 Fahimeh Bahmaninezhad , Shi-Xiong Zhang , Yong Xu , Meng Yu , John H. L. Hansen , Dong Yu

Autoregressive Model (AR) has shown remarkable success in conditional image generation. However, these approaches for multiple reference generation struggle with decoupling different reference identities. In this work, we propose the…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Haiyue Sun , Qingdong He , Jinlong Peng , Peng Tang , Jiangning Zhang , Junwei Zhu , Xiaobin Hu , Shuicheng Yan

Bandwidth extension, the task of reconstructing the high-frequency components of an audio signal from its low-pass counterpart, is a long-standing problem in audio processing. While traditional approaches have evolved alongside the broader…

Sound · Computer Science 2025-11-27 Benoît Giniès , Xiaoyu Bie , Olivier Fercoq , Gaël Richard

The goal of universal audio representation learning is to obtain foundational models that can be used for a variety of downstream tasks involving speech, music and environmental sounds. To approach this problem, methods inspired by works on…

Sound · Computer Science 2024-05-22 Leonardo Pepino , Pablo Riera , Luciana Ferrer