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Learning meaningful frame-wise features on a partially labeled dataset is crucial to semi-supervised sound event detection. Prior works either maintain consistency on frame-level predictions or seek feature-level similarity among…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-18 Yiming Li , Xiangdong Wang , Hong Liu , Rui Tao , Long Yan , Kazushige Ouchi

This paper introduces a novel neural network-based speech coding system that can process noisy speech effectively. The proposed source-aware neural audio coding (SANAC) system harmonizes a deep autoencoder-based source separation model and…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-11 Haici Yang , Kai Zhen , Seungkwon Beack , Minje Kim

Current audio pre-training seeks to learn unified representations for broad audio understanding tasks, but it remains fragmented and is fundamentally bottlenecked by its reliance on weak, noisy, and scale-limited labels. Drawing lessons…

Sound · Computer Science 2026-03-30 Xuanru Zhou , Yiwen Shao , Wei-Cheng Tseng , Dong Yu

Supervised learning methods have shown effectiveness in estimating spatial acoustic parameters such as time difference of arrival, direct-to-reverberant ratio and reverberation time. However, they still suffer from the simulation-to-reality…

Sound · Computer Science 2024-09-10 Bing Yang , Xiaofei Li

Deep learning has been applied to diverse audio semantics tasks, enabling the construction of models that learn hierarchical levels of features from high-dimensional raw data, delivering state-of-the-art performance. But do these algorithms…

Sound · Computer Science 2021-07-21 Lazaros Vrysis , Iordanis Thoidis , Charalampos Dimoulas , George Papanikolaou

With recent rapid growth of large language models (LLMs), discrete speech tokenization has played an important role for injecting speech into LLMs. However, this discretization gives rise to a loss of information, consequently impairing…

Audio and Speech Processing · Electrical Eng. & Systems 2024-07-23 Zhichao Huang , Chutong Meng , Tom Ko

The development of audio foundation models has accelerated rapidly since the emergence of GPT-4o. However, the lack of comprehensive evaluation has become a critical bottleneck for further progress in the field, particularly in audio…

Code search has usually been evaluated as first-stage retrieval, even though production systems rely on broader pipelines with reranking and developer-style queries. Existing benchmarks also suffer from data contamination, label noise, and…

Software Engineering · Computer Science 2026-05-11 Siqiao Xue , Zihan Liao , Jin Qin , Ziyin Zhang , Yixiang Mu , Fan Zhou , Hang Yu

In this paper, we propose SemanticAC, a semantics-assisted framework for Audio Classification to better leverage the semantic information. Unlike conventional audio classification methods that treat class labels as discrete vectors, we…

Sound · Computer Science 2023-02-14 Yicheng Xiao , Yue Ma , Shuyan Li , Hantao Zhou , Ran Liao , Xiu Li

Audio denoising is critical in signal processing, enhancing intelligibility and fidelity for applications like restoring musical recordings. This paper presents a proof-of-concept for adapting a state-of-the-art neural audio codec, the…

Sound · Computer Science 2025-11-04 Daniel Jimon , Mircea Vaida , Adriana Stan

Universal sound separation aims to extract clean audio tracks corresponding to distinct events from mixed audio, which is critical for artificial auditory perception. However, current methods heavily rely on artificially mixed audio for…

Sound · Computer Science 2025-04-25 Xize Cheng , Slytherin Wang , Zehan Wang , Rongjie Huang , Tao Jin , Zhou Zhao

Neural speech coding is a rapidly developing topic, where state-of-the-art approaches now exhibit superior compression performance than conventional methods. Despite significant progress, existing methods still have limitations in…

Sound · Computer Science 2024-07-31 Youqiang Zheng , Weiping Tu , Li Xiao , Xinmeng Xu

Audio is a critical component of multimodal perception, and any truly intelligent system must demonstrate a wide range of auditory capabilities. These capabilities include transcription, classification, retrieval, reasoning, segmentation,…

Sound · Computer Science 2026-02-10 Georg Heigold , Ehsan Variani , Tom Bagby , Cyril Allauzen , Ji Ma , Shankar Kumar , Michael Riley

In this work, we provide a broad comparative analysis of strategies for pre-training audio understanding models for several tasks in the music domain, including labelling of genre, era, origin, mood, instrumentation, key, pitch, vocal…

Discrete audio tokens are compact representations that aim to preserve perceptual quality, phonetic content, and speaker characteristics while enabling efficient storage and inference, as well as competitive performance across diverse…

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

Generative modeling has recently achieved remarkable success across text, image, and audio domains, demonstrating powerful capabilities for unified representation learning. However, audio generation models still face challenges in terms of…

Sound · Computer Science 2025-10-31 Chengwei Liu , Haoyin Yan , Shaofei Xue , Xiaotao Liang , Yinghao Liu , Zheng Xue , Gang Song , Boyang Zhou

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

Advances in large language models (LLMs) have enabled significant capabilities in audio processing, resulting in state-of-the-art models now known as Large Audio Language Models (LALMs). However, minimal work has been done to measure audio…

Sound · Computer Science 2026-03-11 Laya Iyer , Angelina Wang , Sanmi Koyejo

We introduce LMCodec, a causal neural speech codec that provides high quality audio at very low bitrates. The backbone of the system is a causal convolutional codec that encodes audio into a hierarchy of coarse-to-fine tokens using residual…