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This work presents a scalable solution to open-vocabulary visual speech recognition. To achieve this, we constructed the largest existing visual speech recognition dataset, consisting of pairs of text and video clips of faces speaking…

Recently, self-supervised pre-training has gained success in automatic speech recognition (ASR). However, considering the difference between speech accents in real scenarios, how to identify accents and use accent features to improve ASR is…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-16 Keqi Deng , Songjun Cao , Long Ma

Recent years have witnessed significant improvement in ASR systems to recognize spoken utterances. However, it is still a challenging task for noisy and out-of-domain data, where substitution and deletion errors are prevalent in the…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Mukuntha Narayanan Sundararaman , Ayush Kumar , Jithendra Vepa

Detecting synthetic from real speech is increasingly crucial due to the risks of misinformation and identity impersonation. While various datasets for synthetic speech analysis have been developed, they often focus on specific areas,…

Sound · Computer Science 2025-07-18 Zhoulin Ji , Chenhao Lin , Hang Wang , Chao Shen

Connectionist temporal classification (CTC) is widely used for maximum likelihood learning in end-to-end speech recognition models. However, there is usually a disparity between the negative maximum likelihood and the performance metric…

Computation and Language · Computer Science 2017-12-20 Yingbo Zhou , Caiming Xiong , Richard Socher

Automatic Speech Recognition (ASR) offers significant potential to reduce the workload of medical personnel, for example, through the automation of documentation tasks. While numerous benchmarks exist for the English language, specific…

Computation and Language · Computer Science 2026-01-29 Thomas Schuster , Julius Trögele , Nico Döring , Robin Krüger , Matthieu Hoffmann , Holger Friedrich

The proposed model aims to develop a speech recognition technology for hearing, speech, or cognitively disabled people. All the available technology in the field of speech recognition doesn't come with an interface for communication for…

Sound · Computer Science 2024-07-23 Ritabrata Roy Choudhury

We propose a CTC alignment-based single step non-autoregressive transformer (CASS-NAT) for speech recognition. Specifically, the CTC alignment contains the information of (a) the number of tokens for decoder input, and (b) the time span of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-15 Ruchao Fan , Wei Chu , Peng Chang , Jing Xiao

We employ a combination of recent developments in semi-supervised learning for automatic speech recognition to obtain state-of-the-art results on LibriSpeech utilizing the unlabeled audio of the Libri-Light dataset. More precisely, we carry…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-22 Yu Zhang , James Qin , Daniel S. Park , Wei Han , Chung-Cheng Chiu , Ruoming Pang , Quoc V. Le , Yonghui Wu

Code-switching (CS) refers to the switching of languages within a speech signal and results in language confusion for automatic speech recognition (ASR). To address language confusion, we propose a language alignment loss (LAL) that aligns…

Audio and Speech Processing · Electrical Eng. & Systems 2025-11-04 Hexin Liu , Xiangyu Zhang , Haoyang Zhang , Leibny Paola Garcia , Andy W. H. Khong , Eng Siong Chng , Shinji Watanabe

Automatic speech recognition systems have accomplished remarkable improvements in transcription accuracy in recent years. On some domains, models now achieve near-human performance. However, transcription performance on oral history has not…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-19 Michael Gref , Nike Matthiesen , Christoph Schmidt , Sven Behnke , Joachim Köhler

High-quality human transcription is essential for training and improving Automatic Speech Recognition (ASR) models. Recent study~\cite{libricrowd} has found that every 1% worse transcription Word Error Rate (WER) increases approximately 2%…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-20 Hanbo Sun , Jian Gao , Xiaomin Wu , Anjie Fang , Cheng Cao , Zheng Du

This paper presents trainable methods for generating letter to sound rules from a given lexicon for use in pronouncing out-of-vocabulary words and as a method for lexicon compression. As the relationship between a string of letters and a…

cmp-lg · Computer Science 2007-05-23 V. Pagel , K. Lenzo , A. Black

This paper proposes an algorithm to improve the calculation of confidence measure for spoken term detection (STD). Given an input query term, the algorithm first calculates a measurement named document ranking weight for each document in…

Computation and Language · Computer Science 2015-09-11 Quan Liu , Wu Guo , Zhen-Hua Ling

Automatic Speech Recognition (ASR) plays an important role in speech-based automatic detection of Alzheimer's disease (AD). However, recognition errors could propagate downstream, potentially impacting the detection decisions. Recent…

Computation and Language · Computer Science 2024-12-10 Jiawen Kang , Junan Li , Jinchao Li , Xixin Wu , Helen Meng

Recent years have witnessed remarkable progress in automatic speech recognition (ASR), driven by advances in model architectures and large-scale training data. However, two important aspects remain underexplored. First, Word Error Rate…

Computation and Language · Computer Science 2026-04-15 Peng Wang , Yanqiao Zhu , Zixuan Jiang , Qinyuan Chen , Xingjian Zhao , Xipeng Qiu , Wupeng Wang , Zhifu Gao , Xiangang Li , Kai Yu , Xie Chen

In this article, we present an approach for non native automatic speech recognition (ASR). We propose two methods to adapt existing ASR systems to the non-native accents. The first method is based on the modification of acoustic models…

Computation and Language · Computer Science 2007-11-08 Ghazi Bouselmi , Dominique Fohr , Irina Illina , Jean-Paul Haton

Recent advances in machine learning have demonstrated that multi-modal pre-training can improve automatic speech recognition (ASR) performance compared to randomly initialized models, even when models are fine-tuned on uni-modal tasks.…

Computation and Language · Computer Science 2024-04-01 Yash Jain , David Chan , Pranav Dheram , Aparna Khare , Olabanji Shonibare , Venkatesh Ravichandran , Shalini Ghosh

Transformers, originally proposed for natural language processing (NLP) tasks, have recently achieved great success in automatic speech recognition (ASR). However, adjacent acoustic units (i.e., frames) are highly correlated, and…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-20 Yangyang Shi , Yongqiang Wang , Chunyang Wu , Christian Fuegen , Frank Zhang , Duc Le , Ching-Feng Yeh , Michael L. Seltzer

Voice conversion (VC) is an effective approach to electrolaryngeal (EL) speech enhancement, a task that aims to improve the quality of the artificial voice from an electrolarynx device. In frame-based VC methods, time alignment needs to be…