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Speech representation and modelling in high-dimensional spaces of acoustic waveforms, or a linear transformation thereof, is investigated with the aim of improving the robustness of automatic speech recognition to additive noise. The…

Computation and Language · Computer Science 2015-03-31 Matthew Ager , Zoran Cvetkovic , Peter Sollich

Despite successful applications of end-to-end approaches in multi-channel speech recognition, the performance still degrades severely when the speech is corrupted by reverberation. In this paper, we integrate the dereverberation module into…

Audio and Speech Processing · Electrical Eng. & Systems 2021-11-18 Wangyou Zhang , Aswin Shanmugam Subramanian , Xuankai Chang , Shinji Watanabe , Yanmin Qian

Generative models have excelled in audio tasks using approaches such as language models, diffusion, and flow matching. However, existing generative approaches for speech enhancement (SE) face notable challenges: language model-based methods…

Audio and Speech Processing · Electrical Eng. & Systems 2025-05-28 Ziqian Wang , Zikai Liu , Xinfa Zhu , Yike Zhu , Mingshuai Liu , Jun Chen , Longshuai Xiao , Chao Weng , Lei Xie

Building a single universal speech enhancement (SE) system that can handle arbitrary input is a demanded but underexplored research topic. Towards this ultimate goal, one direction is to build a single model that handles diverse audio…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-19 Wangyou Zhang , Jee-weon Jung , Shinji Watanabe , Yanmin Qian

Recent work on intracranial brain-machine interfaces has demonstrated that spoken speech can be decoded with high accuracy, essentially by treating the problem as an instance of supervised learning and training deep neural networks to map…

Neurons and Cognition · Quantitative Biology 2024-05-30 Brian A. Yuan , Joseph G. Makin

Large language models (LLMs) have significantly advanced audio processing through audio codecs that convert audio into discrete tokens, enabling the application of language modeling techniques to audio data. However, audio codecs often…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-19 Edresson Casanova , Ryan Langman , Paarth Neekhara , Shehzeen Hussain , Jason Li , Subhankar Ghosh , Ante Jukić , Sang-gil Lee

Recently, deep learned enabled end-to-end (E2E) communication systems have been developed to merge all physical layer blocks in the traditional communication systems, which make joint transceiver optimization possible. Powered by deep…

Signal Processing · Electrical Eng. & Systems 2021-06-09 Huiqiang Xie , Zhijin Qin , Geoffrey Ye Li , Biing-Hwang Juang

Neural models have become ubiquitous in automatic speech recognition systems. While neural networks are typically used as acoustic models in more complex systems, recent studies have explored end-to-end speech recognition systems based on…

Computation and Language · Computer Science 2017-09-15 Yonatan Belinkov , James Glass

End-to-end multilingual speech recognition models handle multiple languages through a single model, often incorporating language identification to automatically detect the language of incoming speech. Since the common scenario is where the…

Sound · Computer Science 2024-06-19 Yosuke Kashiwagi , Hayato Futami , Emiru Tsunoo , Siddhant Arora , Shinji Watanabe

Complex-valued processing brought deep learning-based speech enhancement and signal extraction to a new level. Typically, the noise reduction process is based on a time-frequency (TF) mask which is applied to a noisy spectrogram. Complex…

Audio and Speech Processing · Electrical Eng. & Systems 2020-06-24 Hendrik Schröter , Tobias Rosenkranz , Alberto N. Escalante-B. , Andreas Maier

In existing Audio-Visual Speech Enhancement (AVSE) methods, objectives such as Scale-Invariant Signal-to-Noise Ratio (SI-SNR) and Mean Squared Error (MSE) are widely used; however, they often correlate poorly with perceptual quality and…

Sound · Computer Science 2026-03-18 Chih-Ning Chen , Jen-Cheng Hou , Hsin-Min Wang , Shao-Yi Chien , Yu Tsao , Fan-Gang Zeng

Self-supervised learning has emerged as a key approach for learning generic representations from speech data. Despite promising results in downstream tasks such as speech recognition, speaker verification, and emotion recognition, a…

Computation and Language · Computer Science 2024-08-01 Nakamasa Inoue , Shinta Otake , Takumi Hirose , Masanari Ohi , Rei Kawakami

Attention-based sequence-to-sequence models for speech recognition jointly train an acoustic model, language model (LM), and alignment mechanism using a single neural network and require only parallel audio-text pairs. Thus, the language…

Audio and Speech Processing · Electrical Eng. & Systems 2019-02-20 Jinxi Guo , Tara N. Sainath , Ron J. Weiss

Large language models (LLMs) have recently demonstrated state-of-the-art performance across various natural language processing (NLP) tasks, achieving near-human levels in multiple language understanding challenges and aligning closely with…

Signal Processing · Electrical Eng. & Systems 2025-07-08 Zhenyi Wang , Li Zou , Shengyun Wei , Kai Li , Feifan Liao , Haibo Mi , Rongxuan Lai

We introduces LLaST, a framework for building high-performance Large Language model based Speech-to-text Translation systems. We address the limitations of end-to-end speech translation(E2E ST) models by exploring model architecture design…

Computation and Language · Computer Science 2024-07-23 Xi Chen , Songyang Zhang , Qibing Bai , Kai Chen , Satoshi Nakamura

Sequence-to-sequence (seq2seq) voice conversion (VC) models have greater potential in converting electrolaryngeal (EL) speech to normal speech (EL2SP) compared to conventional VC models. However, EL2SP based on seq2seq VC requires a…

Sound · Computer Science 2022-10-20 Ding Ma , Lester Phillip Violeta , Kazuhiro Kobayashi , Tomoki Toda

Despite recent advances in voice separation methods, many challenges remain in realistic scenarios such as noisy recording and the limits of available data. In this work, we propose to explicitly incorporate the phonetic and linguistic…

The majority of deep learning-based speech enhancement methods require paired clean-noisy speech data. Collecting such data at scale in real-world conditions is infeasible, which has led the community to rely on synthetically generated…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-30 Dominik Klement , Matthew Maciejewski , Sanjeev Khudanpur , Jan Černocký , Lukáš Burget

For enhancing noisy signals, machine-learning based single-channel speech enhancement schemes exploit prior knowledge about typical speech spectral structures. To ensure a good generalization and to meet requirements in terms of…

Sound · Computer Science 2018-01-17 Robert Rehr , Timo Gerkmann