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Micro-Doppler analysis has become increasingly popular in recent years owning to the ability of the technique to enhance classification strategies. Applications include recognising everyday human activities, distinguishing drone from birds,…

Signal Processing · Electrical Eng. & Systems 2021-02-16 Chong Tang , Wenda Li , Shelly Vishwakarma , Karl Woodbridge , Simon Julier , Kevin Chetty

Data denoising is a persistent challenge across scientific and engineering domains. Real-world data is frequently corrupted by complex, non-linear noise, rendering traditional rule-based denoising methods inadequate. To overcome these…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Chang Nie , Tianchen Deng , Zhe Liu , Hesheng Wang

This paper described the PCG-AIID system for L3DAS22 challenge in Task 1: 3D speech enhancement in office reverberant environment. We proposed a two-stage framework to address multi-channel speech denoising and dereverberation. In the first…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-22 Jingdong Li , Yuanyuan Zhu , Dawei Luo , Yun Liu , Guohui Cui , Zhaoxia Li

This paper proposes methods that can optimize a Convolutional BeamFormer (CBF) for jointly performing denoising, dereverberation, and source separation (DN+DR+SS) in a computationally efficient way. Conventionally, cascade configuration…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Tomohiro Nakatani , Christoph Boeddeker , Keisuke Kinoshita , Rintaro Ikeshita , Marc Delcroix , Reinhold Haeb-Umbach

Although fully end-to-end speaker diarization systems have made significant progress in recent years, modular systems often achieve superior results in real-world scenarios due to their greater adaptability and robustness. Historically,…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-26 Ruoyu Wang , Shutong Niu , Gaobin Yang , Jun Du , Shuangqing Qian , Tian Gao , Jia Pan

Speech 'in-the-wild' is a handicap for speaker recognition systems due to the variability induced by real-life conditions, such as environmental noise and the emotional state of the speaker. Taking advantage of the principles of…

Audio and Speech Processing · Electrical Eng. & Systems 2022-05-17 Esther Rituerto-González , Carmen Peláez-Moreno

This report focuses on algorithms that perform single-channel speech enhancement. The author of this report uses modulation-domain Kalman filtering algorithms for speech enhancement, i.e. noise suppression and dereverberation, in [1], [2],…

Sound · Computer Science 2018-11-02 Nikolaos Dionelis

Background noise is a major source of quality impairments in Voice over Internet Protocol (VoIP) and Public Switched Telephone Network (PSTN) calls. Recent work shows the efficacy of deep learning for noise suppression, but the datasets…

This work proposes a neural network to extensively exploit spatial information for multichannel joint speech separation, denoising and dereverberation, named SpatialNet. In the short-time Fourier transform (STFT) domain, the proposed…

Sound · Computer Science 2023-12-25 Changsheng Quan , Xiaofei Li

Automated respiratory sound classification faces practical challenges from background noise and insufficient denoising in existing systems. We propose Adaptive Differential Denoising network, that integrates noise suppression and…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-04 Gaoyang Dong , Zhicheng Zhang , Ping Sun , Minghui Zhang

This work introduces UDPNet, a novel architecture designed to accelerate the reverse diffusion process in speech synthesis. Unlike traditional diffusion models that rely on timestep embeddings and shared network parameters, UDPNet unrolls…

Sound · Computer Science 2025-06-12 Peter Ochieng

Despite significant progress made in the last decade, deep neural network (DNN) based speech enhancement (SE) still faces the challenge of notable degradation in the quality of recovered speech under low signal-to-noise ratio (SNR)…

Sound · Computer Science 2024-08-20 Zhongshu Hou , Tong Lei , Qinwen Hu , Zhanzhong Cao , Ming Tang , Jing Lu

This paper presents a joint source separation algorithm that simultaneously reduces acoustic echo, reverberation and interfering sources. Target speeches are separated from the mixture by maximizing independence with respect to the other…

Sound · Computer Science 2021-04-12 Yueyue Na , Ziteng Wang , Zhang Liu , Biao Tian , Qiang Fu

This paper introduces a multi-stage self-directed framework designed to address the spatial semantic segmentation of sound scene (S5) task in the DCASE 2025 Task 4 challenge. This framework integrates models focused on three distinct tasks:…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-18 Younghoo Kwon , Dongheon Lee , Dohwan Kim , Jung-Woo Choi

We propose a simple method for post-processing the outputs of a text summarization system in order to refine its overall quality. Our approach is to train text-to-text rewriting models to correct information redundancy errors that may arise…

Computation and Language · Computer Science 2019-07-26 Nikola I. Nikolov , Alessandro Calmanovici , Richard H. R. Hahnloser

Pretrained language models have significantly advanced performance across various natural language processing tasks. However, adversarial attacks continue to pose a critical challenge to systems built using these models, as they can be…

Computation and Language · Computer Science 2025-05-20 Zhenhao Li , Huichi Zhou , Marek Rei , Lucia Specia

In this work, we build upon our previous publication and use diffusion-based generative models for speech enhancement. We present a detailed overview of the diffusion process that is based on a stochastic differential equation and delve…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-14 Julius Richter , Simon Welker , Jean-Marie Lemercier , Bunlong Lay , Timo Gerkmann

In this paper, we propose the use of denoising for microphone classification, to enable its usage for several key application domains that involve noisy conditions. We describe the proposed analysis pipeline and the baseline algorithm for…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-04 L. Cuccovillo , A. Giganti , P. Bestagini , P. Aichroth , S. Tubaro

This paper presents a review of multi-objective deep learning methods that have been introduced in the literature for speech denoising. After stating an overview of conventional, single objective deep learning, and hybrid or combined…

Audio and Speech Processing · Electrical Eng. & Systems 2020-03-30 Arian Azarang , Nasser Kehtarnavaz

Separating different speaker properties from a multi-speaker environment is challenging. Instead of separating a two-speaker signal in signal space like speech source separation, a speaker embedding de-mixing approach is proposed. The…

Sound · Computer Science 2021-02-08 Yanpei Shi , Thomas Hain