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End-to-end automatic speech recognition (ASR) models, including both attention-based models and the recurrent neural network transducer (RNN-T), have shown superior performance compared to conventional systems. However, previous studies…

Automatic speech recognition (ASR) systems developed in recent years have shown promising results with self-attention models (e.g., Transformer and Conformer), which are replacing conventional recurrent neural networks. Meanwhile, a…

Sound · Computer Science 2022-11-01 Koichi Miyazaki , Masato Murata , Tomoki Koriyama

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 grammatical errors, disfluency, and other…

Computation and Language · Computer Science 2020-04-10 Junwei Liao , Sefik Emre Eskimez , Liyang Lu , Yu Shi , Ming Gong , Linjun Shou , Hong Qu , Michael Zeng

The Streaming Unmixing and Recognition Transducer (SURT) has recently become a popular framework for continuous, streaming, multi-talker speech recognition (ASR). With advances in architecture, objectives, and mixture simulation methods, it…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-30 Desh Raj , Matthew Wiesner , Matthew Maciejewski , Leibny Paola Garcia-Perera , Daniel Povey , Sanjeev Khudanpur

Conventional automatic speech recognition (ASR) models typically produce outputs as normalized texts lacking punctuation and capitalization, necessitating post-processing models to enhance readability. This approach, however, introduces…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-23 Jian You , Xiangfeng Li , Erwan Zerhouni

The stream of words produced by Automatic Speech Recognition (ASR) systems is typically devoid of punctuations and formatting. Most natural language processing applications expect segmented and well-formatted texts as input, which is not…

Computation and Language · Computer Science 2017-07-19 Vardaan Pahuja , Anirban Laha , Shachar Mirkin , Vikas Raykar , Lili Kotlerman , Guy Lev

Automatic speech recognition (ASR) systems often encounter difficulties in accurately recognizing rare words, leading to errors that can have a negative impact on downstream tasks such as keyword spotting, intent detection, and text…

Artificial Intelligence · Computer Science 2023-10-10 Jiajun He , Zekun Yang , Tomoki Toda

Streaming automatic speech recognition (ASR) aims to emit each hypothesized word as quickly and accurately as possible. However, emitting fast without degrading quality, as measured by word error rate (WER), is highly challenging. Existing…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-05 Jiahui Yu , Chung-Cheng Chiu , Bo Li , Shuo-yiin Chang , Tara N. Sainath , Yanzhang He , Arun Narayanan , Wei Han , Anmol Gulati , Yonghui Wu , Ruoming Pang

This paper presents a new approach to the problem of correcting speech recognition errors by means of post-editing. It consists of using a neural sequence tagger that learns how to correct an ASR (Automatic Speech Recognition) hypothesis…

Computation and Language · Computer Science 2024-06-13 Tomasz Ziętkiewicz

Speech recognition (ASR) and speaker diarization (SD) models have traditionally been trained separately to produce rich conversation transcripts with speaker labels. Recent advances have shown that joint ASR and SD models can learn to…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-06 Huanru Henry Mao , Shuyang Li , Julian McAuley , Garrison Cottrell

Automatic Speech Recognition (ASR) systems generalize poorly on accented speech. The phonetic and linguistic variability of accents present hard challenges for ASR systems today in both data collection and modeling strategies. The resulting…

The audio-visual speech fusion strategy AV Align has shown significant performance improvements in audio-visual speech recognition (AVSR) on the challenging LRS2 dataset. Performance improvements range between 7% and 30% depending on the…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-20 George Sterpu , Christian Saam , Naomi Harte

It's challenging to customize transducer-based automatic speech recognition (ASR) system with context information which is dynamic and unavailable during model training. In this work, we introduce a light-weight contextual spelling…

Computation and Language · Computer Science 2021-08-29 Xiaoqiang Wang , Yanqing Liu , Sheng Zhao , Jinyu Li

For end-to-end Automatic Speech Recognition (ASR) models, recognizing personal or rare phrases can be hard. A promising way to improve accuracy is through spelling correction (or rewriting) of the ASR lattice, where potentially…

Computation and Language · Computer Science 2024-09-26 Leonid Velikovich , Christopher Li , Diamantino Caseiro , Shankar Kumar , Pat Rondon , Kandarp Joshi , Xavier Velez

Segmentation for continuous Automatic Speech Recognition (ASR) has traditionally used silence timeouts or voice activity detectors (VADs), which are both limited to acoustic features. This segmentation is often overly aggressive, given that…

Computation and Language · Computer Science 2022-10-28 Piyush Behre , Naveen Parihar , Sharman Tan , Amy Shah , Eva Sharma , Geoffrey Liu , Shuangyu Chang , Hosam Khalil , Chris Basoglu , Sayan Pathak

In this work, we explore a multimodal semi-supervised learning approach for punctuation prediction by learning representations from large amounts of unlabelled audio and text data. Conventional approaches in speech processing typically use…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-04 Monica Sunkara , Srikanth Ronanki , Dhanush Bekal , Sravan Bodapati , Katrin Kirchhoff

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

The Transformer architecture has been well adopted as a dominant architecture in most sequence transduction tasks including automatic speech recognition (ASR), since its attention mechanism excels in capturing long-range dependencies. While…

Audio and Speech Processing · Electrical Eng. & Systems 2021-10-13 Jing Pan , Tao Lei , Kwangyoun Kim , Kyu Han , Shinji Watanabe

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

Low-resource accented speech recognition is one of the important challenges faced by current ASR technology in practical applications. In this study, we propose a Conformer-based architecture, called Aformer, to leverage both the acoustic…

Sound · Computer Science 2023-06-21 Xuefei Wang , Yanhua Long , Yijie Li , Haoran Wei