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Synthetic data generated by text-to-speech (TTS) systems can be used to improve automatic speech recognition (ASR) systems in low-resource or domain mismatch tasks. It has been shown that TTS-generated outputs still do not have the same…

Computation and Language · Computer Science 2023-10-13 Nick Rossenbach , Benedikt Hilmes , Ralf Schlüter

This paper introduces three self-contained data augmentation methods for low-resource Automatic Speech Recognition (ASR). Our techniques first generate novel text--using gloss-based replacement, random replacement, or an LLM-based…

Computation and Language · Computer Science 2026-01-21 Katsumi Ibaraki , David Chiang

We present a case study on developing a customized speech-to-text system for a Hungarian speaker with severe dysarthria. State-of-the-art automatic speech recognition (ASR) models struggle with zero-shot transcription of dysarthric speech,…

In recent years, automatic speech recognition (ASR) models greatly improved transcription performance both in clean, low noise, acoustic conditions and in reverberant environments. However, all these systems rely on the availability of…

Audio and Speech Processing · Electrical Eng. & Systems 2024-09-18 Francesco Nespoli , Daniel Barreda , Patrick A. Naylor

High-quality and intelligible speech is essential to text-to-speech (TTS) model training, however, obtaining high-quality data for low-resource languages is challenging and expensive. Applying speech enhancement on Automatic Speech…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-20 Zhaoheng Ni , Sravya Popuri , Ning Dong , Kohei Saijo , Xiaohui Zhang , Gael Le Lan , Yangyang Shi , Vikas Chandra , Changhan Wang

Developing Automatic Speech Recognition (ASR) for low-resource languages is a challenge due to the small amount of transcribed audio data. For many such languages, audio and text are available separately, but not audio with transcriptions.…

Computation and Language · Computer Science 2022-07-21 Nathaniel Robinson , Perez Ogayo , Swetha Gangu , David R. Mortensen , Shinji Watanabe

Despite recent progress in automatic speech recognition (ASR), elderly ASR (EASR) remains challenging due to limited training data and the distinct acoustic and linguistic characteristics of elderly speech. In this work, we address data…

Computation and Language · Computer Science 2026-04-29 Minsik Lee , Seoi Hong , Chongmin Lee , Sieun Choi , Jian Kim , Jua Han , Jihie Kim

Accented automatic speech recognition (ASR) often degrades due to the limited availability of accented training data. Prior work has explored accent modeling in low-resource settings, but existing approaches typically require minutes to…

Supervised training of speech recognition models requires access to transcribed audio data, which often is not possible due to confidentiality issues. Our approach to this problem is to generate synthetic audio from a text-only corpus using…

Audio and Speech Processing · Electrical Eng. & Systems 2025-09-01 Yanis Perrin , Gilles Boulianne

Recent studies have proposed the use of Text-To-Speech (TTS) systems to automatically synthesise speech test cases on a scale and uncover a large number of failures in ASR systems. However, the failures uncovered by synthetic test cases may…

Sequence-to-sequence automatic speech recognition (ASR) models require large quantities of data to attain high performance. For this reason, there has been a recent surge in interest for unsupervised and semi-supervised training in such…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-21 Murali Karthick Baskar , Shinji Watanabe , Ramon Astudillo , Takaaki Hori , Lukáš Burget , Jan Černocký

Text to speech (TTS) and automatic speech recognition (ASR) are two dual tasks in speech processing and both achieve impressive performance thanks to the recent advance in deep learning and large amount of aligned speech and text data.…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-28 Yi Ren , Xu Tan , Tao Qin , Sheng Zhao , Zhou Zhao , Tie-Yan Liu

In this paper, we propose MixSpeech, a simple yet effective data augmentation method based on mixup for automatic speech recognition (ASR). MixSpeech trains an ASR model by taking a weighted combination of two different speech features…

Computation and Language · Computer Science 2021-02-26 Linghui Meng , Jin Xu , Xu Tan , Jindong Wang , Tao Qin , Bo Xu

Although end-to-end automatic speech recognition (E2E ASR) has achieved great performance in tasks that have numerous paired data, it is still challenging to make E2E ASR robust against noisy and low-resource conditions. In this study, we…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-08 Emiru Tsunoo , Kentaro Shibata , Chaitanya Narisetty , Yosuke Kashiwagi , Shinji Watanabe

Currently, a common approach in many speech processing tasks is to leverage large scale pre-trained models by fine-tuning them on in-domain data for a particular application. Yet obtaining even a small amount of such data can be…

Audio and Speech Processing · Electrical Eng. & Systems 2024-08-20 Samuele Cornell , Jordan Darefsky , Zhiyao Duan , Shinji Watanabe

Automatic Speech Recognition(ASR) has been dominated by deep learning-based end-to-end speech recognition models. These approaches require large amounts of labeled data in the form of audio-text pairs. Moreover, these models are more…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-28 Raviraj Joshi , Anupam Singh

Psychoacoustic studies have shown that locally-time reversed (LTR) speech, i.e., signal samples time-reversed within a short segment, can be accurately recognised by human listeners. This study addresses the question of how well a…

Audio and Speech Processing · Electrical Eng. & Systems 2021-10-12 Si-Ioi Ng , Tan Lee

While recent neural text-to-speech (TTS) systems perform remarkably well, they typically require a substantial amount of recordings from the target speaker reading in the desired speaking style. In this work, we present a novel 3-step…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-03 Goeric Huybrechts , Thomas Merritt , Giulia Comini , Bartek Perz , Raahil Shah , Jaime Lorenzo-Trueba

Although many Automatic Speech Recognition (ASR) systems have been developed for Modern Standard Arabic (MSA) and Dialectal Arabic (DA), few studies have focused on dialect-specific implementations, particularly for low-resource Arabic…

Computation and Language · Computer Science 2026-01-13 Ayman Mansour

We propose an on-the-fly data augmentation method for automatic speech recognition (ASR) that uses alignment information to generate effective training samples. Our method, called Aligned Data Augmentation (ADA) for ASR, replaces…

Computation and Language · Computer Science 2023-06-13 Tsz Kin Lam , Mayumi Ohta , Shigehiko Schamoni , Stefan Riezler