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Acoustic-to-word (A2W) end-to-end automatic speech recognition (ASR) systems have attracted attention because of an extremely simplified architecture and fast decoding. To alleviate data sparseness issues due to infrequent words, the…

Computation and Language · Computer Science 2019-09-27 Hirofumi Inaguma , Masato Mimura , Shinsuke Sakai , Tatsuya Kawahara

In this paper, we propose to improve end-to-end (E2E) spoken language understand (SLU) in an RNN transducer model (RNN-T) by incorporating a joint self-conditioned CTC automatic speech recognition (ASR) objective. Our proposed model is akin…

Machine Learning · Computer Science 2025-01-06 Vishal Sunder , Eric Fosler-Lussier

End-to-end (E2E) Automatic Speech Recognition (ASR) models are trained using paired audio-text samples that are expensive to obtain, since high-quality ground-truth data requires human annotators. Voice search applications, such as digital…

Computation and Language · Computer Science 2025-06-09 Christophe Van Gysel , Maggie Wu , Lyan Verwimp , Caglar Tirkaz , Marco Bertola , Zhihong Lei , Youssef Oualil

This paper addresses end-to-end automatic speech recognition (ASR) for long audio recordings such as lecture and conversational speeches. Most end-to-end ASR models are designed to recognize independent utterances, but contextual…

Computation and Language · Computer Science 2021-04-20 Takaaki Hori , Niko Moritz , Chiori Hori , Jonathan Le Roux

End-to-end models have gradually become the preferred option for automatic speech recognition (ASR) applications. During the training of end-to-end ASR, data augmentation is a quite effective technique for regularizing the neural networks.…

Audio and Speech Processing · Electrical Eng. & Systems 2021-04-27 Jianwei Sun , Zhiyuan Tang , Hengxin Yin , Wei Wang , Xi Zhao , Shuaijiang Zhao , Xiaoning Lei , Wei Zou , Xiangang Li

In real-world applications, automatic speech recognition (ASR) systems must handle overlapping speech from multiple speakers and recognize rare words like technical terms. Traditional methods address multi-talker ASR and contextual biasing…

Audio and Speech Processing · Electrical Eng. & Systems 2025-06-17 Jiajun He , Naoki Sawada , Koichi Miyazaki , Tomoki Toda

Recently, end-to-end (E2E) automatic speech recognition (ASR) models have made great strides and exhibit excellent performance in general speech recognition. However, there remain several challenging scenarios that E2E models are not…

Computation and Language · Computer Science 2023-06-16 Zheng Liang , Zheshu Song , Ziyang Ma , Chenpeng Du , Kai Yu , Xie Chen

Code-switching-where multilingual speakers alternately switch between languages during conversations-still poses significant challenges to end-to-end (E2E) automatic speech recognition (ASR) systems due to phenomena of both acoustic and…

Audio and Speech Processing · Electrical Eng. & Systems 2024-12-13 Tzu-Ting Yang , Hsin-Wei Wang , Yi-Cheng Wang , Berlin Chen

End-to-end automatic speech recognition (ASR), unlike conventional ASR, does not have modules to learn the semantic representation from speech encoder. Moreover, the higher frame-rate of speech representation prevents the model to learn the…

Artificial Intelligence · Computer Science 2021-03-19 Md Akmal Haidar , Chao Xing , Mehdi Rezagholizadeh

End-to-end (E2E) models have been explored for large speech corpora and have been found to match or outperform traditional pipeline-based systems in some languages. However, most prior work on end-to-end models use speech corpora exceeding…

Audio and Speech Processing · Electrical Eng. & Systems 2019-06-25 Brij Mohan Lal Srivastava , Basil Abraham , Sunayana Sitaram , Rupesh Mehta , Preethi Jyothi

End-to-End automatic speech recognition (ASR) models aim to learn a generalised speech representation to perform recognition. In this domain there is little research to analyse internal representation dependencies and their relationship to…

Computation and Language · Computer Science 2022-11-04 Anna Ollerenshaw , Md Asif Jalal , Thomas Hain

End-to-end speech recognition is a promising technology for enabling compact automatic speech recognition (ASR) systems since it can unify the acoustic and language model into a single neural network. However, as a drawback, training of…

Computation and Language · Computer Science 2022-02-17 Yotaro Kubo , Shigeki Karita , Michiel Bacchiani

We analyze automatic speech recognition (ASR) modeling choices under domain mismatch, comparing classic modular and novel sequence-to-sequence (seq2seq) architectures. Across the different ASR architectures, we examine a spectrum of…

Sound · Computer Science 2025-08-14 Tina Raissi , Nick Rossenbach , Ralf Schlüter

Automatic Speech Recognition (ASR) systems remain prone to errors that affect downstream applications. In this paper, we propose LIR-ASR, a heuristic optimized iterative correction framework using LLMs, inspired by human auditory…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-23 Yutong Liu , Ziyue Zhang , Cheng Huang , Yongbin Yu , Xiangxiang Wang , Yuqing Cai , Nyima Tashi

Self-supervised learning representation (SSLR) has demonstrated its significant effectiveness in automatic speech recognition (ASR), mainly with clean speech. Recent work pointed out the strength of integrating SSLR with single-channel…

Sound · Computer Science 2022-10-20 Yoshiki Masuyama , Xuankai Chang , Samuele Cornell , Shinji Watanabe , Nobutaka Ono

This article describes a density ratio approach to integrating external Language Models (LMs) into end-to-end models for Automatic Speech Recognition (ASR). Applied to a Recurrent Neural Network Transducer (RNN-T) ASR model trained on a…

Audio and Speech Processing · Electrical Eng. & Systems 2020-03-02 Erik McDermott , Hasim Sak , Ehsan Variani

Information in speech signals is not evenly distributed, making it an additional challenge for end-to-end (E2E) speech translation (ST) to learn to focus on informative features. In this paper, we propose adaptive feature selection (AFS)…

Computation and Language · Computer Science 2020-10-21 Biao Zhang , Ivan Titov , Barry Haddow , Rico Sennrich

This paper investigates a novel approach to end-to-end speech translation (ST) based on aligning frozen pre-trained automatic speech recognition (ASR) and machine translation (MT) models via a small connector module (Q-Former, our…

Computation and Language · Computer Science 2024-11-28 Šimon Sedláček , Santosh Kesiraju , Alexander Polok , Jan Černocký

This work explores better adaptation methods to low-resource languages using an external language model (LM) under the framework of transfer learning. We first build a language-independent ASR system in a unified sequence-to-sequence (S2S)…

Computation and Language · Computer Science 2019-05-08 Hirofumi Inaguma , Jaejin Cho , Murali Karthick Baskar , Tatsuya Kawahara , Shinji Watanabe

End-to-end (E2E) spoken language understanding (SLU) systems predict utterance semantics directly from speech using a single model. Previous work in this area has focused on targeted tasks in fixed domains, where the output semantic…

Computation and Language · Computer Science 2021-10-08 Michael Saxon , Samridhi Choudhary , Joseph P. McKenna , Athanasios Mouchtaris