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This paper proposes a new approach to perform unsupervised fine-tuning and self-training using unlabeled speech data for recurrent neural network (RNN)-Transducer (RNN-T) end-to-end (E2E) automatic speech recognition (ASR) systems.…

Computation and Language · Computer Science 2022-08-01 Cong-Thanh Do , Mohan Li , Rama Doddipatla

Modern Automatic Speech Recognition (ASR) systems primarily rely on scores from an Acoustic Model (AM) and a Language Model (LM) to rescore the N-best lists. With the abundance of recent natural language processing advances, the information…

Computation and Language · Computer Science 2019-10-28 Yuanfeng Song , Di Jiang , Xuefang Zhao , Qian Xu , Raymond Chi-Wing Wong , Lixin Fan , Qiang Yang

Fine-tuning pretrained language models (LMs) is a popular approach to automatic speech recognition (ASR) error detection during post-processing. While error detection systems often take advantage of statistical language archetypes captured…

Computation and Language · Computer Science 2021-08-05 Seongmin Park , Dongchan Shin , Sangyoun Paik , Subong Choi , Alena Kazakova , Jihwa Lee

Modern Automatic Speech Recognition (ASR) systems can achieve high performance in terms of recognition accuracy. However, a perfectly accurate transcript still can be challenging to read due to disfluency, filter words, and other errata…

Computation and Language · Computer Science 2021-02-23 Junwei Liao , Yu Shi , Ming Gong , Linjun Shou , Sefik Eskimez , Liyang Lu , Hong Qu , Michael Zeng

Nowadays, machine learning based Automatic Speech Recognition (ASR) technique has widely spread in smartphones, home devices, and public facilities. As convenient as this technology can be, a considerable security issue also raises -- the…

Cryptography and Security · Computer Science 2018-09-07 Zirui Xu , Fuxun Yu , Chenchen Liu , Xiang Chen

Although modern automatic speech recognition (ASR) systems can achieve high performance, they may produce errors that weaken readers' experience and do harm to downstream tasks. To improve the accuracy and reliability of ASR hypotheses, we…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-11 Jing Du , Shiliang Pu , Qinbo Dong , Chao Jin , Xin Qi , Dian Gu , Ru Wu , Hongwei Zhou

Recent advancements in machine learning have significantly improved speech recognition, but recognizing speech from non-fluent or accented speakers remains a challenge. Previous efforts, relying on rule-based pronunciation patterns, have…

Computation and Language · Computer Science 2025-06-04 Anna Seo Gyeong Choi , Jonghyeon Park , Myungwoo Oh

Automatic Speech Recognition (ASR) has increased in popularity in recent years. The evolution of processor and storage technologies has enabled more advanced ASR mechanisms, fueling the development of virtual assistants such as Amazon…

Audio and Speech Processing · Electrical Eng. & Systems 2024-12-04 Sebastian Baunsgaard , Sebastian B. Wrede , Pınar Tozun

Current automatic speech recognition (ASR) models are designed to be used across many languages and tasks without substantial changes. However, this broad language coverage hides performance gaps within languages, for example, across…

Computation and Language · Computer Science 2024-10-04 Giuseppe Attanasio , Beatrice Savoldi , Dennis Fucci , Dirk Hovy

Large language model (LLM)-based automatic speech recognition (ASR) has recently achieved strong performance across diverse tasks, yet contextual biasing for named entities and hotwords under large vocabularies remains challenging. In this…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-29 YuXiang Kong , JunFeng Hou , Jian Tang , Bingqing Zhu , Jicheng Zhang , Shaofei Xue

Automatic speech recognition (ASR) systems often make unrecoverable errors due to subsystem pruning (acoustic, language and pronunciation models); for example pruning words due to acoustics using short-term context, prior to rescoring with…

Computation and Language · Computer Science 2019-07-01 Prashanth Gurunath Shivakumar , Haoqi Li , Kevin Knight , Panayiotis Georgiou

Form about four decades human beings have been dreaming of an intelligent machine which can master the natural speech. In its simplest form, this machine should consist of two subsystems, namely automatic speech recognition (ASR) and speech…

Sound · Computer Science 2013-05-08 Urmila Shrawankar , V. M. Thakare

Recognizer Output Voting Error Reduction (ROVER) has been widely used for system combination in automatic speech recognition (ASR). In order to select the most appropriate words to insert at each position in the output transcriptions, some…

Computation and Language · Computer Science 2017-06-23 Shahab Jalalvand , Matteo Negri , Daniele Falavigna , Marco Matassoni , Marco Turchi

Dysarthric speech recognition (DSR) enhances the accessibility of smart devices for dysarthric speakers with limited mobility. Previously, DSR research was constrained by the fact that existing datasets typically consisted of isolated…

Sound · Computer Science 2025-07-01 Shiyao Wang , Jiaming Zhou , Shiwan Zhao , Yong Qin

ASR has achieved remarkable global progress, yet African low-resource languages remain rigorously underrepresented, producing barriers to digital inclusion across the continent with more than +2000 languages. This systematic literature…

Hypernasality is an abnormal resonance in human speech production, especially in patients with craniofacial anomalies such as cleft palate. In clinical application, hypernasality estimation is crucial in cleft palate diagnosis, as its…

Audio and Speech Processing · Electrical Eng. & Systems 2022-08-11 Kaitao Song , Teng Wan , Bixia Wang , Huiqiang Jiang , Luna Qiu , Jiahang Xu , Liping Jiang , Qun Lou , Yuqing Yang , Dongsheng Li , Xudong Wang , Lili Qiu

Speech Recognition (ASR) due to phoneme distortions and high variability. While self-supervised ASR models like Wav2Vec, HuBERT, and Whisper have shown promise, their effectiveness in dysarthric speech remains unclear. This study…

Sound · Computer Science 2025-08-12 Ahmed Aboeitta , Ahmed Sharshar , Youssef Nafea , Shady Shehata

Nowadays, research in speech technologies has gotten a lot out thanks to recently created public domain corpora that contain thousands of recording hours. These large amounts of data are very helpful for training the new complex models…

Audio and Speech Processing · Electrical Eng. & Systems 2021-05-12 Guillermo Cámbara , Alex Peiró-Lilja , Mireia Farrús , Jordi Luque

Data augmentation is one of the most effective ways to make end-to-end automatic speech recognition (ASR) perform close to the conventional hybrid approach, especially when dealing with low-resource tasks. Using recent advances in speech…

Audio and Speech Processing · Electrical Eng. & Systems 2020-12-21 Aleksandr Laptev , Roman Korostik , Aleksey Svischev , Andrei Andrusenko , Ivan Medennikov , Sergey Rybin

Recent years have witnessed significant progress in multilingual automatic speech recognition (ASR), driven by the emergence of end-to-end (E2E) models and the scaling of multilingual datasets. Despite that, two main challenges persist in…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-12 Zheshu Song , Jianheng Zhuo , Yifan Yang , Ziyang Ma , Shixiong Zhang , Xie Chen