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In this study, we propose the global context guided channel and time-frequency transformations to model the long-range, non-local time-frequency dependencies and channel variances in speaker representations. We use the global context…

Audio and Speech Processing · Electrical Eng. & Systems 2020-09-10 Wei Xia , John H. L. Hansen

Convolutional Neural Networks (CNNs) have achieved impressive results across many super-resolution (SR) and image restoration tasks. While many such networks can upscale low-resolution (LR) images using just the raw pixel-level information,…

Image and Video Processing · Electrical Eng. & Systems 2021-10-29 Matthew Aquilina , Christian Galea , John Abela , Kenneth P. Camilleri , Reuben A. Farrugia

This paper introduces a dual-signal transformation LSTM network (DTLN) for real-time speech enhancement as part of the Deep Noise Suppression Challenge (DNS-Challenge). This approach combines a short-time Fourier transform (STFT) and a…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-23 Nils L. Westhausen , Bernd T. Meyer

Audio super-resolution aims to recover missing high-frequency details from bandwidth-limited low-resolution audio, thereby improving the naturalness and perceptual quality of the reconstructed signal. However, most existing methods directly…

Sound · Computer Science 2026-04-13 Fei Liu , Yang Ai , Hui-Peng Du , Yu-Fei Shi , Zhen-Hua Ling

DeepFake Audio, unlike DeepFake images and videos, has been relatively less explored from detection perspective, and the solutions which exist for the synthetic speech classification either use complex networks or dont generalize to…

Sound · Computer Science 2022-10-24 Vardhan Dongre , Abhinav Thimma Reddy , Nikhitha Reddeddy

Although end-to-end neural text-to-speech (TTS) methods (such as Tacotron2) are proposed and achieve state-of-the-art performance, they still suffer from two problems: 1) low efficiency during training and inference; 2) hard to model long…

Computation and Language · Computer Science 2019-01-31 Naihan Li , Shujie Liu , Yanqing Liu , Sheng Zhao , Ming Liu , Ming Zhou

Over the past few years, speech enhancement methods based on deep learning have greatly surpassed traditional methods based on spectral subtraction and spectral estimation. Many of these new techniques operate directly in the the short-time…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-28 Jean-Marc Valin , Umut Isik , Neerad Phansalkar , Ritwik Giri , Karim Helwani , Arvindh Krishnaswamy

Self-supervised learning (SSL)-based speech models are extensively used for full-stack speech processing. However, it has been observed that improving SSL-based speech representations using unlabeled speech for content-related tasks is…

Computation and Language · Computer Science 2024-06-14 Amit Meghanani , Thomas Hain

Time-domain speech enhancement (SE) has recently been intensively investigated. Among recent works, DEMUCS introduces multi-resolution STFT loss to enhance performance. However, some resolutions used for STFT contain non-stationary signals,…

Sound · Computer Science 2023-03-28 Hao Shi , Masato Mimura , Longbiao Wang , Jianwu Dang , Tatsuya Kawahara

Audio-visual speech separation aims to isolate each speaker's clean voice from mixtures by leveraging visual cues such as lip movements and facial features. While visual information provides complementary semantic guidance, existing methods…

Sound · Computer Science 2025-10-13 Ke Xue , Rongfei Fan , Lixin , Dawei Zhao , Chao Zhu , Han Hu

In this paper, we address the problem of multichannel speech enhancement in the short-time Fourier transform (STFT) domain. A long short-time memory (LSTM) network takes as input a sequence of STFT coefficients associated with a frequency…

Sound · Computer Science 2020-09-24 Xiaofei LI , Radu Horaud

Deep learning based speech enhancement in the short-time Fourier transform (STFT) domain typically uses a large window length such as 32 ms. A larger window can lead to higher frequency resolution and potentially better enhancement. This…

Sound · Computer Science 2022-12-07 Zhong-Qiu Wang , Gordon Wichern , Shinji Watanabe , Jonathan Le Roux

Recently, we proposed short-time Fourier transform (STFT)-based loss functions for training a neural speech waveform model. In this paper, we generalize the above framework and propose a training scheme for such models based on spectral…

Audio and Speech Processing · Electrical Eng. & Systems 2019-04-09 Shinji Takaki , Hirokazu Kameoka , Junichi Yamagishi

In this work, we explore the constant-Q transform (CQT) for speech emotion recognition (SER). The CQT-based time-frequency analysis provides variable spectro-temporal resolution with higher frequency resolution at lower frequencies. Since…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-09 Premjeet Singh , Goutam Saha , Md Sahidullah

In this work, we propose a novel consistency-preserving loss function for recovering the phase information in the context of phase reconstruction (PR) and speech enhancement (SE). Different from conventional techniques that directly…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-25 Pin-Jui Ku , Chun-Wei Ho , Hao Yen , Sabato Marco Siniscalchi , Chin-Hui Lee

Silent speech recognition (SSR) is a technology that recognizes speech content from non-acoustic speech-related biosignals. This paper utilizes an attention-enhanced temporal convolutional network architecture for contactless IR-UWB…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-01 Sunghwa Lee , Jaewon Yu

Real-time semantic segmentation has received considerable attention due to growing demands in many practical applications, such as autonomous vehicles, robotics, etc. Existing real-time segmentation approaches often utilize feature fusion…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Jingjing Xiong , Lai-Man Po , Wing-Yin Yu , Chang Zhou , Pengfei Xian , Weifeng Ou

This paper presents SHTNet, a lightweight spherical harmonic transform (SHT) based framework, which is designed to address cross-array generalization challenges in multi-channel automatic speech recognition (ASR) through three key…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-22 Xiangzhu Kong , Huang Hao , Zhijian Ou

Self-supervised learning has demonstrated impressive performance in speech tasks, yet there remains ample opportunity for advancement in the realm of speech enhancement research. In addressing speech tasks, confining the attention mechanism…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-14 Tao Zheng , Liejun Wang , Yinfeng Yu

Methods based on convolutional neural network (CNN) have demonstrated tremendous improvements on single image super-resolution. However, the previous methods mainly restore images from one single area in the low resolution (LR) input, which…

Computer Vision and Pattern Recognition · Computer Science 2017-05-16 Xiaoyi Jia , Xiangmin Xu , Bolun Cai , Kailing Guo