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Inspired by recent developments in neural speech coding and diffusion-based language modeling, we tackle speech enhancement by modeling the conditional distribution of clean speech codes given noisy speech codes using absorbing discrete…

Sound · Computer Science 2026-02-27 Philippe Gonzalez

Traditional speech enhancement methods often oversimplify the task of restoration by focusing on a single type of distortion. Generative models that handle multiple distortions frequently struggle with phone reconstruction and…

Sound · Computer Science 2025-02-11 Tushar Dhyani , Florian Lux , Michele Mancusi , Giorgio Fabbro , Fritz Hohl , Ngoc Thang Vu

This paper addresses unsupervised diffusion-based single-channel speech enhancement (SE). Prior work in this direction combines a score-based diffusion model trained on clean speech with a Gaussian noise model whose covariance is structured…

Sound · Computer Science 2026-05-26 Jean-Eudes Ayilo , Mostafa Sadeghi , Romain Serizel , Xavier Alameda-Pineda

In this paper, we present a causal speech signal improvement system that is designed to handle different types of distortions. The method is based on a generative diffusion model which has been shown to work well in scenarios with missing…

Audio and Speech Processing · Electrical Eng. & Systems 2023-03-16 Julius Richter , Simon Welker , Jean-Marie Lemercier , Bunlong Lay , Tal Peer , Timo Gerkmann

Speech enhancement is designed to enhance the intelligibility and quality of speech across diverse noise conditions. Recently, diffusion model has gained lots of attention in speech enhancement area, achieving competitive results. Current…

Sound · Computer Science 2025-01-23 Chengzhong Wang , Jianjun Gu , Dingding Yao , Junfeng Li , Yonghong Yan

Denoising Diffusion Probabilistic Models have shown extraordinary ability on various generative tasks. However, their slow inference speed renders them impractical in speech synthesis. This paper proposes a linear diffusion model (LinDiff)…

Sound · Computer Science 2023-06-13 Haogeng Liu , Tao Wang , Jie Cao , Ran He , Jianhua Tao

Online Speech Enhancement was mainly reserved for predictive models. A key advantage of these models is that for an incoming signal frame from a stream of data, the model is called only once for enhancement. In contrast, generative Speech…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-22 Bunlong Lay , Rostislav Makarov , Simon Welker , Maris Hillemann , Timo Gerkmann

Speech separation, the task of isolating multiple speech sources from a mixed audio signal, remains challenging in noisy environments. In this paper, we propose a generative correction method to enhance the output of a discriminative…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-12 Helin Wang , Jesus Villalba , Laureano Moro-Velazquez , Jiarui Hai , Thomas Thebaud , Najim Dehak

Background noise considerably reduces the accuracy and reliability of speaker verification (SV) systems. These challenges can be addressed using a speech enhancement system as a front-end module. Recently, diffusion probabilistic models…

Audio and Speech Processing · Electrical Eng. & Systems 2023-12-20 Ju-ho Kim , Jungwoo Heo , Hyun-seo Shin , Chan-yeong Lim , Ha-Jin Yu

Diffusion models have demonstrated remarkable success in generative tasks, including audio super-resolution (SR). In many applications like movie post-production and album mastering, substantial computational budgets are available for…

Sound · Computer Science 2025-08-05 Yizhu Jin , Zhen Ye , Zeyue Tian , Haohe Liu , Qiuqiang Kong , Yike Guo , Wei Xue

Speech enhancement (SE) is the foundational task of enhancing the clarity and quality of speech in the presence of non-stationary additive noise. While deterministic deep learning models have been commonly employed for SE, recent research…

Audio and Speech Processing · Electrical Eng. & Systems 2025-03-11 Sonal Kumar , Sreyan Ghosh , Utkarsh Tyagi , Anton Jeran Ratnarajah , Chandra Kiran Reddy Evuru , Ramani Duraiswami , Dinesh Manocha

Score-based generative models (SGMs) have recently shown impressive results for difficult generative tasks such as the unconditional and conditional generation of natural images and audio signals. In this work, we extend these models to the…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-08 Simon Welker , Julius Richter , Timo Gerkmann

It is promising to design a single model that can suppress various distortions and improve speech quality, i.e., universal speech enhancement (USE). Compared to supervised learning-based predictive methods, diffusion-based generative models…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-02 Jie Zhang , Haoyin Yan , Xiaofei Li

A primary challenge when deploying speaker recognition systems in real-world applications is performance degradation caused by environmental mismatch. We propose a diffusion-based method that takes speaker embeddings extracted from a…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-23 KiHyun Nam , Jungwoo Heo , Jee-weon Jung , Gangin Park , Chaeyoung Jung , Ha-Jin Yu , Joon Son Chung

Diffusion models (DMs) have revolutionized generative learning. They utilize a diffusion process to encode data into a simple Gaussian distribution. However, encoding a complex, potentially multimodal data distribution into a single…

Machine Learning · Computer Science 2024-07-04 Yilun Xu , Gabriele Corso , Tommi Jaakkola , Arash Vahdat , Karsten Kreis

Diffusion model-based speech enhancement has received increased attention since it can generate very natural enhanced signals and generalizes well to unseen conditions. Diffusion models have been explored for several sub-tasks of speech…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-21 Naoyuki Kamo , Marc Delcroix , Tomohiro Nakatani

Building upon Diff-A-Riff, a latent diffusion model for musical instrument accompaniment generation, we present a series of improvements targeting quality, diversity, inference speed, and text-driven control. First, we upgrade the…

Sound · Computer Science 2024-10-31 Javier Nistal , Marco Pasini , Stefan Lattner

In many real-world regression tasks, the data distribution is heavily skewed, and models learn predominantly from abundant majority samples while failing to predict minority labels accurately. While imbalanced classification has been…

Machine Learning · Computer Science 2025-09-30 Shayan Alahyari

Generative modeling offers new opportunities for bioacoustics, enabling the synthesis of realistic animal vocalizations that could support biomonitoring efforts and supplement scarce data for endangered species. However, directly generating…

Sound · Computer Science 2025-09-03 Tianyu Song , Ton Viet Ta

In the domains of image and audio, diffusion models have shown impressive performance. However, their application to discrete data types, such as language, has often been suboptimal compared to autoregressive generative models. This paper…

Machine Learning · Computer Science 2024-05-29 Severi Rissanen , Markus Heinonen , Arno Solin