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Training speech recognizers with unpaired speech and text -- known as unsupervised speech recognition (UASR) -- is a crucial step toward extending ASR to low-resource languages in the long-tail distribution and enabling multimodal learning…

Computation and Language · Computer Science 2025-10-07 Liming Wang , Junrui Ni , Kai-Wei Chang , Saurabhchand Bhati , David Harwath , Mark Hasegawa-Johnson , James R. Glass

This paper proposes an unsupervised data selection method by using a submodular function based on contrastive loss ratios of target and training data sets. A model using a contrastive loss function is trained on both sets. Then the ratio of…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-26 Chanho Park , Rehan Ahmad , Thomas Hain

A crucial part of an accurate and reliable spoken language assessment system is the underlying ASR model. Recently, large-scale pre-trained ASR foundation models such as Whisper have been made available. As the output of these models is…

Computation and Language · Computer Science 2023-10-11 Rao Ma , Mengjie Qian , Mark J. F. Gales , Kate M. Knill

Fine-tuning pretrained ASR models for specific domains is challenging for small organizations with limited labeled data and computational resources. Here, we explore different data selection pipelines and propose a robust approach that…

Scores from traditional confidence classifiers (CCs) in automatic speech recognition (ASR) systems lack universal interpretation and vary with updates to the underlying confidence or acoustic models (AMs). In this work, we build…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-02 Amber Afshan , Kshitiz Kumar , Jian Wu

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

We propose an unsupervised adaptation framework, Self-TAught Recognizer (STAR), which leverages unlabeled data to enhance the robustness of automatic speech recognition (ASR) systems in diverse target domains, such as noise and accents.…

Computation and Language · Computer Science 2024-05-24 Yuchen Hu , Chen Chen , Chao-Han Huck Yang , Chengwei Qin , Pin-Yu Chen , Eng Siong Chng , Chao Zhang

The accuracy of Automated Speech Recognition (ASR) technology has improved, but it is still imperfect in many settings. Researchers who evaluate ASR performance often focus on improving the Word Error Rate (WER) metric, but WER has been…

Human-Computer Interaction · Computer Science 2017-12-29 Sushant Kafle , Matt Huenerfauth

Automatic speech recognition (ASR) of overlapped speech remains a highly challenging task to date. To this end, multi-channel microphone array data are widely used in state-of-the-art ASR systems. Motivated by the invariance of visual…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-19 Jianwei Yu , Bo Wu , Rongzhi Gu , Shi-Xiong Zhang , Lianwu Chen , Yong Xu. Meng Yu , Dan Su , Dong Yu , Xunying Liu , Helen Meng

Generative error correction (GER) with large language models (LLMs) has emerged as an effective post-processing approach to improve automatic speech recognition (ASR) performance. However, it often struggles with rare or domain-specific…

Sound · Computer Science 2025-05-26 Natsuo Yamashita , Masaaki Yamamoto , Hiroaki Kokubo , Yohei Kawaguchi

The integration of natural language processing (NLP) technologies into educational applications has shown promising results, particularly in the language learning domain. Recently, many spoken open-domain chatbots have been used as speaking…

Computation and Language · Computer Science 2023-07-20 Long Mai , Julie Carson-Berndsen

Producing a large annotated speech corpus for training ASR systems remains difficult for more than 95% of languages all over the world which are low-resourced, but collecting a relatively big unlabeled data set for such languages is more…

Computation and Language · Computer Science 2019-08-26 Kuan-Yu Chen , Che-Ping Tsai , Da-Rong Liu , Hung-Yi Lee , Lin-shan Lee

In this paper, we propose a self-training approach for automatic speech recognition (ASR) for low-resource settings. While self-training approaches have been extensively developed and evaluated for high-resource languages such as English,…

Computation and Language · Computer Science 2023-08-11 Satwinder Singh , Feng Hou , Ruili Wang

Voice assistants increasingly use on-device Automatic Speech Recognition (ASR) to ensure speed and privacy. However, due to resource constraints on the device, queries pertaining to complex information domains often require further…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-13 Iwen E. Kang , Christophe Van Gysel , Man-Hung Siu

General-purpose ASR underperforms for atypical speakers, such as L2 learners, reinforcing bias and limiting use in education and accessibility. Using the CEFR-graded Speak and Improve corpus, we show that naive fine-tuning of Whisper…

Sound · Computer Science 2025-10-14 Ling Sun , Charlotte Zhu , Shuju Shi

Automatic Speech Recognition (ASR) is a key element in new services that helps users to interact with an automated system. Deep learning methods have made it possible to deploy systems with word error rates below 5% for ASR of English.…

Sound · Computer Science 2022-07-15 Rodolfo Zevallos , Nuria Bel , Guillermo Cámbara , Mireia Farrús , Jordi Luque

The quality of automatic speech recognition (ASR) is critical to Dialogue Systems as ASR errors propagate to and directly impact downstream tasks such as language understanding (LU). In this paper, we propose multi-task neural approaches to…

Unpaired data has shown to be beneficial for low-resource automatic speech recognition~(ASR), which can be involved in the design of hybrid models with multi-task training or language model dependent pre-training. In this work, we leverage…

Sound · Computer Science 2022-04-06 Ye-Qian Du , Jie Zhang , Qiu-Shi Zhu , Li-Rong Dai , Ming-Hui Wu , Xin Fang , Zhou-Wang Yang

Non-intrusive intelligibility prediction is important for its application in realistic scenarios, where a clean reference signal is difficult to access. The construction of many non-intrusive predictors require either ground truth…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-07 Zehai Tu , Ning Ma , Jon Barker

Despite the remarkable progress in end-to-end Automatic Speech Recognition (ASR) engines, accurately transcribing dysarthric speech remains a major challenge. In this work, we proposed a two-stage framework for the Speech Accessibility…

Computation and Language · Computer Science 2025-05-27 Moreno La Quatra , Alkis Koudounas , Valerio Mario Salerno , Sabato Marco Siniscalchi