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Automatic Speech Recognition (ASR) still face challenges when recognizing time-variant rare-phrases. Contextual biasing (CB) modules bias ASR model towards such contextually-relevant phrases. During training, a list of biasing phrases are…

Contextual automatic speech recognition (ASR) systems allow for recognizing out-of-vocabulary (OOV) words, such as named entities or rare words. However, it remains challenging due to limited training data and ambiguous or inconsistent…

Computation and Language · Computer Science 2025-09-03 Changsong Liu , Yizhou Peng , Eng Siong Chng

We previously proposed contextual spelling correction (CSC) to correct the output of end-to-end (E2E) automatic speech recognition (ASR) models with contextual information such as name, place, etc. Although CSC has achieved reasonable…

Sound · Computer Science 2023-02-23 Xiaoqiang Wang , Yanqing Liu , Jinyu Li , Sheng Zhao

Automatic speech recognition (ASR) has benefited from advances in pretrained speech and language models, yet most systems remain constrained to monolingual settings and short, isolated utterances. While recent efforts in context-aware ASR…

Computation and Language · Computer Science 2026-03-09 Yuchen Zhang , Haralambos Mouratidis , Ravi Shekhar

Recognition of uncommon words such as names and technical terminology is important to understanding conversations in context. However, the ability to recognise such words remains a challenge in modern automatic speech recognition (ASR)…

Sound · Computer Science 2021-10-07 Namkyu Jung , Geonmin Kim , Joon Son Chung

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

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

In this paper, we explore the benefits of incorporating context into a Recurrent Neural Network (RNN-T) based Automatic Speech Recognition (ASR) model to improve the speech recognition for virtual assistants. Specifically, we use meta…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Swayambhu Nath Ray , Soumyajit Mitra , Raghavendra Bilgi , Sri Garimella

Contextualized end-to-end automatic speech recognition has been an active research area, with recent efforts focusing on the implicit learning of contextual phrases based on the final loss objective. However, these approaches ignore the…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-12 Muhammad Shakeel , Yui Sudo , Yifan Peng , Shinji Watanabe

Neural sequence-to-sequence systems deliver state-of-the-art performance for automatic speech recognition (ASR). When using appropriate modeling units, e.g., byte-pair encoded characters, these systems are in principal open vocabulary…

Computation and Language · Computer Science 2021-07-07 Christian Huber , Juan Hussain , Sebastian Stüker , Alexander Waibel

Automatic Speech Recognition (ASR) has witnessed a profound research interest. Recent breakthroughs have given ASR systems different prospects such as faithfully transcribing spoken language, which is a pivotal advancement in building…

Computation and Language · Computer Science 2024-03-05 Ankitha Sudarshan , Vinay Samuel , Parth Patwa , Ibtihel Amara , Aman Chadha

Personal rare word recognition in end-to-end Automatic Speech Recognition (E2E ASR) models is a challenge due to the lack of training data. A standard way to address this issue is with shallow fusion methods at inference time. However, due…

End-to-end (E2E) automatic speech recognition (ASR) methods exhibit remarkable performance. However, since the performance of such methods is intrinsically linked to the context present in the training data, E2E-ASR methods do not perform…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-22 Yui Sudo , Muhammad Shakeel , Yosuke Fukumoto , Yifan Peng , Shinji Watanabe

Contextualized ASR models have been demonstrated to effectively improve the recognition accuracy of uncommon phrases when a predefined phrase list is available. However, these models often struggle with bilingual settings, which are…

Computation and Language · Computer Science 2024-08-21 Xucheng Wan , Naijun Zheng , Kai Liu , Huan Zhou

For a speech-enhancement algorithm, it is highly desirable to simultaneously improve perceptual quality and recognition rate. Thanks to computational costs and model complexities, it is challenging to train a model that effectively…

Machine Learning · Computer Science 2018-02-19 Rasool Fakoor , Xiaodong He , Ivan Tashev , Shuayb Zarar

End-to-end (E2E) automatic speech recognition (ASR) systems often have difficulty recognizing uncommon words, that appear infrequently in the training data. One promising method, to improve the recognition accuracy on such rare words, is to…

Computation and Language · Computer Science 2021-11-08 Feng-Ju Chang , Jing Liu , Martin Radfar , Athanasios Mouchtaris , Maurizio Omologo , Ariya Rastrow , Siegfried Kunzmann

The usage of automatic speech recognition (ASR) systems are becoming omnipresent ranging from personal assistant to chatbots, home, and industrial automation systems, etc. Modern robots are also equipped with ASR capabilities for…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-25 Pradip Pramanick , Chayan Sarkar

We present a training scheme for streaming automatic speech recognition (ASR) based on recurrent neural network transducers (RNN-T) which allows the encoder network to learn to exploit context audio from a stream, using segmented or…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-16 Andreas Schwarz , Ilya Sklyar , Simon Wiesler

Personalization of automatic speech recognition (ASR) models is a widely studied topic because of its many practical applications. Most recently, attention-based contextual biasing techniques are used to improve the recognition of rare…

Computation and Language · Computer Science 2023-11-15 Sai Muralidhar Jayanthi , Devang Kulshreshtha , Saket Dingliwal , Srikanth Ronanki , Sravan Bodapati

Context cues carry information which can improve multi-turn interactions in automatic speech recognition (ASR) systems. In this paper, we introduce a novel mechanism inspired by hyper-prompting to fuse textual context with acoustic…

Computation and Language · Computer Science 2024-01-17 Sergio Duarte-Torres , Arunasish Sen , Aman Rana , Lukas Drude , Alejandro Gomez-Alanis , Andreas Schwarz , Leif Rädel , Volker Leutnant