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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

Speech enhancement aims to improve the perceptual quality of the speech signal by suppression of the background noise. However, excessive suppression may lead to speech distortion and speaker information loss, which degrades the performance…

Sound · Computer Science 2021-10-05 Yi Ma , Kong Aik Lee , Ville Hautamaki , Haizhou Li

Current neural audio codecs typically use residual vector quantization (RVQ) to discretize speech signals. However, they often experience codebook collapse, which reduces the effective codebook size and leads to suboptimal performance. To…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-12 Rui-Chen Zheng , Hui-Peng Du , Xiao-Hang Jiang , Yang Ai , Zhen-Hua Ling

This paper introduces a novel approach to speech restoration by integrating a context-related conditioning strategy. Specifically, we employ the diffusion-based generative restoration model, UNIVERSE++, as a backbone to evaluate the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-13 Soo-Whan Chung , Min-Seok Choi

Neural audio compression has emerged as a promising technology for efficiently representing speech, music, and general audio. However, existing methods suffer from significant performance degradation at limited bitrates, where the available…

Sound · Computer Science 2026-05-08 Jin Wang , Wenbin Jiang , Xiangbo Wang , Yubo You , Sheng Fang

With the development of deep learning, neural network-based speech enhancement (SE) models have shown excellent performance. Meanwhile, it was shown that the development of self-supervised pre-trained models can be applied to various…

Audio and Speech Processing · Electrical Eng. & Systems 2022-09-29 Xiao-Ying Zhao , Qiu-Shi Zhu , Jie Zhang

Since the advent of Deep Learning (DL), Speech Enhancement (SE) models have performed well under a variety of noise conditions. However, such systems may still introduce sonic artefacts, sound unnatural, and restrict the ability for a user…

Numerous noise adaptation techniques have been proposed to fine-tune deep-learning models in speech enhancement (SE) for mismatched noise environments. Nevertheless, adaptation to a new environment may lead to catastrophic forgetting of the…

Audio and Speech Processing · Electrical Eng. & Systems 2020-09-21 Chi-Chang Lee , Yu-Chen Lin , Hsuan-Tien Lin , Hsin-Min Wang , Yu Tsao

In real-world environments, background noise significantly degrades the intelligibility and clarity of human speech. Audio-visual speech enhancement (AVSE) attempts to restore speech quality, but existing methods often fall short,…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-27 Tassadaq Hussain , Kia Dashtipour , Yu Tsao , Amir Hussain

We consider speech enhancement for signals picked up in one noisy environment that must be rendered to a listener in another noisy environment. For both far-end noise reduction and near-end listening enhancement, it has been shown that…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-06 Andreas J. Fuglsig , Jesper Jensen , Zheng-Hua Tan , Lars S. Bertelsen , Jens Christian Lindof , Jan Østergaard

A large and growing amount of speech content in real-life scenarios is being recorded on consumer-grade devices in uncontrolled environments, resulting in degraded speech quality. Transforming such low-quality device-degraded speech into…

Audio and Speech Processing · Electrical Eng. & Systems 2022-03-23 Haoyu Li , Junichi Yamagishi

Monaural speech enhancement (SE) provides a versatile and cost-effective approach to SE tasks by utilizing recordings from a single microphone. However, the monaural SE lags performance behind multi-channel SE as the monaural SE methods are…

Audio and Speech Processing · Electrical Eng. & Systems 2022-12-05 Xinmeng Xu , Weiping Tu , Yuhong Yang

Noise-robust automatic speech recognition (ASR) has been commonly addressed by applying speech enhancement (SE) at the waveform level before recognition. However, speech-level enhancement does not always translate into consistent…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-09 Da-Hee Yang , Joon-Hyuk Chang

Neural speech codecs excel in reconstructing clean speech signals; however, their efficacy in complex acoustic environments and downstream signal processing tasks remains underexplored. In this study, we introduce a novel benchmark named…

Sound · Computer Science 2025-05-29 Haoran Wang , Guanyu Chen , Bohan Li , Hankun Wang , Yiwei Guo , Zhihan Li , Xie Chen , Kai Yu

The intelligibility and quality of speech from a mobile phone or public announcement system are often affected by background noise in the listening environment. By pre-processing the speech signal it is possible to improve the speech…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-21 Andreas Jonas Fuglsig , Jesper Jensen , Zheng-Hua Tan , Lars Søndergaard Bertelsen , Jens Christian Lindof , Jan Østergaard

Speech enhancement performance degrades significantly in noisy environments, limiting the deployment of speech-controlled technologies in industrial settings, such as manufacturing plants. Existing speech enhancement solutions primarly rely…

Robotics · Computer Science 2026-02-23 Zachary Turcotte , François Grondin

Large language models have revolutionized natural language processing through self-supervised pretraining on massive datasets. Inspired by this success, researchers have explored adapting these methods to speech by discretizing continuous…

Machine Learning · Computer Science 2025-10-28 Luca Della Libera , Francesco Paissan , Cem Subakan , Mirco Ravanelli

Speech enhancement (SE) aims to improve the quality and intelligibility of speech in noisy environments. Recent studies have shown that incorporating visual cues in audio signal processing can enhance SE performance. Given that human speech…

Sound · Computer Science 2025-05-27 Meng-Ping Lin , Jen-Cheng Hou , Chia-Wei Chen , Shao-Yi Chien , Jun-Cheng Chen , Xugang Lu , Yu Tsao

Noise suppression and echo cancellation are critical in speech enhancement and essential for smart devices and real-time communication. Deployed in voice processing front-ends and edge devices, these algorithms must ensure efficient…

Sound · Computer Science 2023-11-28 Kaijun Tan , Benzhe Dai , Jiakui Li , Wenyu Mao

From hearing aids to augmented and virtual reality devices, binaural speech enhancement algorithms have been established as state-of-the-art techniques to improve speech intelligibility and listening comfort. In this paper, we present an…

Audio and Speech Processing · Electrical Eng. & Systems 2025-07-29 Vikas Tokala , Eric Grinstein , Mike Brookes , Simon Doclo , Jesper Jensen , Patrick A. Naylor