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In realistic environments, speech is usually interfered by various noise and reverberation, which dramatically degrades the performance of automatic speech recognition (ASR) systems. To alleviate this issue, the commonest way is to use a…

Sound · Computer Science 2018-05-04 Bin Liu , Shuai Nie , Yaping Zhang , Dengfeng Ke , Shan Liang , Wenju Liu1

Training a robust system, e.g.,Speech to Text (STT), requires large datasets. Variability present in the dataset such as unwanted nuisances and biases are the reason for the need of large datasets to learn general representations. In this…

Sound · Computer Science 2021-10-19 Hemant Yadav , Atul Anshuman Singh , Rachit Mittal , Sunayana Sitaram , Yi Yu , Rajiv Ratn Shah

Nowadays, recognition-synthesis-based methods have been quite popular with voice conversion (VC). By introducing linguistics features with good disentangling characters extracted from an automatic speech recognition (ASR) model, the VC…

Sound · Computer Science 2023-05-17 Xintao Zhao , Shuai Wang , Yang Chao , Zhiyong Wu , Helen Meng

Aiming at reducing the reliance on expensive human annotations, data synthesis for Automatic Speech Recognition (ASR) has remained an active area of research. While prior work mainly focuses on synthetic speech generation for ASR data…

Accent Conversion (AC) seeks to change the accent of speech from one (source) to another (target) while preserving the speech content and speaker identity. However, many AC approaches rely on source-target parallel speech data. We propose a…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-24 Yi Zhou , Zhizheng Wu , Mingyang Zhang , Xiaohai Tian , Haizhou Li

Recent advances in neural network based acoustic modelling have shown significant improvements in automatic speech recognition (ASR) performance. In order for acoustic models to be able to handle large acoustic variability, large amounts of…

Audio and Speech Processing · Electrical Eng. & Systems 2018-05-23 Aditay Tripathi , Aanchan Mohan , Saket Anand , Maneesh Singh

Although neural machine translation (NMT) has achieved impressive progress recently, it is usually trained on the clean parallel data set and hence cannot work well when the input sentence is the production of the automatic speech…

Computation and Language · Computer Science 2018-11-05 Xiang Li , Haiyang Xue , Wei Chen , Yang Liu , Yang Feng , Qun Liu

Adversarial training is a defense technique that improves adversarial robustness of a deep neural network (DNN) by including adversarial examples in the training data. In this paper, we identify an overlooked problem of adversarial training…

Machine Learning · Computer Science 2020-09-24 Wonseok Lee , Hanbit Lee , Sang-goo Lee

Automatic speech recognition (ASR) systems play a key role in many commercial products including voice assistants. Typically, they require large amounts of clean speech data for training which gives an undue advantage to large organizations…

Audio and Speech Processing · Electrical Eng. & Systems 2019-11-21 Bhavya Ghai , Buvana Ramanan , Klaus Mueller

End-to-End Automatic Speech Recognition (ASR) has advanced significantly yet still struggles with rare and domain-specific entities. This paper introduces a simple yet efficient prompt-based biasing technique for contextualized ASR,…

Audio and Speech Processing · Electrical Eng. & Systems 2026-01-21 Bo Ren , Yu Shi , Jinyu Li

We present a bidirectional unsupervised model pre-training (UPT) method and apply it to children's automatic speech recognition (ASR). An obstacle to improving child ASR is the scarcity of child speech databases. A common approach to…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-16 Ruchao Fan , Amber Afshan , Abeer Alwan

Spoken languages show significant variation across mandarin and accent. Despite the high performance of mandarin automatic speech recognition (ASR), accent ASR is still a challenge task. In this paper, we introduce meta-learning techniques…

Sound · Computer Science 2023-07-25 Ziwei Zhu , Changhao Shan , Bihong Zhang , Jian Yu

We show the performance of Automatic Speech Recognition (ASR) systems that use semi-supervised speech representations can be boosted by a complimentary pitch accent detection module, by introducing a joint ASR and pitch accent detection…

Computation and Language · Computer Science 2025-08-08 David Sasu , Natalie Schluter

End-to-end automatic speech recognition (ASR) can achieve promising performance with large-scale training data. However, it is known that domain mismatch between training and testing data often leads to a degradation of recognition…

Sound · Computer Science 2021-06-10 Wenxin Hou , Jindong Wang , Xu Tan , Tao Qin , Takahiro Shinozaki

This paper proposes a novel label-synchronous speech-to-text alignment technique for automatic speech recognition (ASR). The speech-to-text alignment is a problem of splitting long audio recordings with un-aligned transcripts into…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-22 Yusuke Kida , Tatsuya Komatsu , Masahito Togami

In this work, we propose a new automatic speech recognition (ASR) system based on feature learning and an end-to-end training procedure for air traffic control (ATC) systems. The proposed model integrates the feature learning block,…

Sound · Computer Science 2021-11-05 Peng Fan , Dongyue Guo , Yi Lin , Bo Yang , Jianwei Zhang

Environmental noises and reverberation have a detrimental effect on the performance of automatic speech recognition (ASR) systems. Multi-condition training of neural network-based acoustic models is used to deal with this problem, but it…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-03 Desh Raj , Jesus Villalba , Daniel Povey , Sanjeev Khudanpur

This work explores the challenge of enhancing Automatic Speech Recognition (ASR) model performance across various user-specific domains while preserving user data privacy. We employ federated learning and parameter-efficient domain…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-23 Xuan Kan , Yonghui Xiao , Tien-Ju Yang , Nanxin Chen , Rajiv Mathews

Lately, the self-attention mechanism has marked a new milestone in the field of automatic speech recognition (ASR). Nevertheless, its performance is susceptible to environmental intrusions as the system predicts the next output symbol…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-06 Lujun Li , Yikai Kang , Yuchen Shi , Ludwig Kürzinger , Tobias Watzel , Gerhard Rigoll

A targeted adversarial attack produces audio samples that can force an Automatic Speech Recognition (ASR) system to output attacker-chosen text. To exploit ASR models in real-world, black-box settings, an adversary can leverage the…

Machine Learning · Computer Science 2022-09-30 Raphael Olivier , Hadi Abdullah , Bhiksha Raj