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The performance of traditional linear spatial filters for speech enhancement is constrained by the physical size and number of channels of microphone arrays. For instance, for large microphone distances and high frequencies, spatial…

Audio and Speech Processing · Electrical Eng. & Systems 2025-10-01 Alina Mannanova , Jakob Kienegger , Timo Gerkmann

The Conformer has become the most popular encoder model for automatic speech recognition (ASR). It adds convolution modules to a transformer to learn both local and global dependencies. In this work we describe a faster, more…

Audio and Speech Processing · Electrical Eng. & Systems 2024-04-11 Zengwei Yao , Liyong Guo , Xiaoyu Yang , Wei Kang , Fangjun Kuang , Yifan Yang , Zengrui Jin , Long Lin , Daniel Povey

Current multichannel speech enhancement algorithms typically assume a stationary sound source, a common mismatch with reality that limits their performance in real-world scenarios. This paper focuses on attention-driven spatial filtering…

Audio and Speech Processing · Electrical Eng. & Systems 2023-12-19 Yuzhu Wang , Archontis Politis , Tuomas Virtanen

Transformer-based models have gained increasing popularity achieving state-of-the-art performance in many research fields including speech translation. However, Transformer's quadratic complexity with respect to the input sequence length…

Computation and Language · Computer Science 2023-10-19 Sara Papi , Marco Gaido , Matteo Negri , Marco Turchi

Speech restoration aims to remove distortions in speech signals. Prior methods mainly focus on a single type of distortion, such as speech denoising or dereverberation. However, speech signals can be degraded by several different…

Audio and Speech Processing · Electrical Eng. & Systems 2023-10-10 Haohe Liu , Xubo Liu , Qiuqiang Kong , Qiao Tian , Yan Zhao , DeLiang Wang , Chuanzeng Huang , Yuxuan Wang

Transformer-based text to speech (TTS) model (e.g., Transformer TTS~\cite{li2019neural}, FastSpeech~\cite{ren2019fastspeech}) has shown the advantages of training and inference efficiency over RNN-based model (e.g.,…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Mingjian Chen , Xu Tan , Yi Ren , Jin Xu , Hao Sun , Sheng Zhao , Tao Qin , Tie-Yan Liu

Speech separation refers to extracting each individual speech source in a given mixed signal. Recent advancements in speech separation and ongoing research in this area, have made these approaches as promising techniques for pre-processing…

Machine Learning · Computer Science 2019-12-18 Fahimeh Bahmaninezhad , Shi-Xiong Zhang , Yong Xu , Meng Yu , John H. L. Hansen , Dong Yu

Encoder-decoder models have achieved remarkable success in speech and text tasks, yet efficiently adapting these models to diverse uni/multi-modal scenarios remains an open challenge. In this paper, we propose Whisper-UT, a unified and…

In multichannel speech enhancement, effectively capturing spatial and spectral information across different microphones is crucial for noise reduction. Traditional methods, such as CNN or LSTM, attempt to model the temporal dynamics of…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-15 Wenze Ren , Haibin Wu , Yi-Cheng Lin , Xuanjun Chen , Rong Chao , Kuo-Hsuan Hung , You-Jin Li , Wen-Yuan Ting , Hsin-Min Wang , Yu Tsao

This paper proposes a WaveNet-based neural excitation model (ExcitNet) for statistical parametric speech synthesis systems. Conventional WaveNet-based neural vocoding systems significantly improve the perceptual quality of synthesized…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-23 Eunwoo Song , Kyungguen Byun , Hong-Goo Kang

In this contribution, we present a novel online approach to multichannel speech enhancement. The proposed method estimates the enhanced signal through a filter-and-sum framework. More specifically, complex-valued masks are estimated by a…

Audio and Speech Processing · Electrical Eng. & Systems 2021-08-09 Mhd Modar Halimeh , Walter Kellermann

With the proliferation of video platforms on the internet, recording musical performances by mobile devices has become commonplace. However, these recordings often suffer from degradation such as noise and reverberation, which negatively…

Sound · Computer Science 2023-08-25 Yunkee Chae , Junghyun Koo , Sungho Lee , Kyogu Lee

In this paper, we present a novel multi-channel speech extraction system to simultaneously extract multiple clean individual sources from a mixture in noisy and reverberant environments. The proposed method is built on an improved…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Jisi Zhang , Catalin Zorila , Rama Doddipatla , Jon Barker

Transformers have enabled impressive improvements in deep learning. They often outperform recurrent and convolutional models in many tasks while taking advantage of parallel processing. Recently, we proposed the SepFormer, which obtains…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-30 Cem Subakan , Mirco Ravanelli , Samuele Cornell , Francois Grondin , Mirko Bronzi

We propose a novel neural waveform compression method to catalyze emerging speech semantic communications. By introducing nonlinear transform and variational modeling, we effectively capture the dependencies within speech frames and…

Sound · Computer Science 2022-12-14 Shengshi Yao , Zixuan Xiao , Sixian Wang , Jincheng Dai , Kai Niu , Ping Zhang

In this work, we extend our previously proposed offline SpatialNet for long-term streaming multichannel speech enhancement in both static and moving speaker scenarios. SpatialNet exploits spatial information, such as the spatial/steering…

Sound · Computer Science 2024-06-21 Changsheng Quan , Xiaofei Li

In this work, we propose a deep beamforming framework for speech enhancement in dynamic acoustic environments. The framework learns time-varying beamformer weights from noisy multichannel signals via a deep neural network, guided by a…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-18 Ilai Zaidel , Sharon Gannot

With the development of teleconferencing and in-vehicle voice assistants, far-field multi-speaker speech recognition has become a hot research topic. Recently, a multi-channel transformer (MCT) has been proposed, which demonstrates the…

Sound · Computer Science 2026-01-07 Guo Yifan , Tian Yao , Suo Hongbin , Wan Yulong

Despite the promising performance of existing frame-wise all-neural beamformers in the speech enhancement field, it remains unclear what the underlying mechanism exists. In this paper, we revisit the beamforming behavior from the beam-space…

Sound · Computer Science 2022-12-01 Andong Li , Guochen Yu , Wenzhe Liu , Xiaodong Li , Chengshi Zheng

Transformer-based architectures have advanced medical image analysis by effectively modeling long-range dependencies, yet they often struggle in 3D settings due to substantial memory overhead and insufficient capture of fine-grained local…