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Hallucinations are a type of output error produced by deep neural networks. While this has been studied in natural language processing, they have not been researched previously in automatic speech recognition. Here, we define hallucinations…

Computation and Language · Computer Science 2024-01-04 Rita Frieske , Bertram E. Shi

Hallucinations in automatic speech recognition (ASR) systems refer to fluent and coherent transcriptions produced by neural ASR models that are completely unrelated to the underlying acoustic input (i.e., the speech signal). While similar…

Computation and Language · Computer Science 2025-10-21 Alkis Koudounas , Moreno La Quatra , Manuel Giollo , Sabato Marco Siniscalchi , Elena Baralis

Hallucinations of deep neural models are amongst key challenges in automatic speech recognition (ASR). In this paper, we investigate hallucinations of the Whisper ASR model induced by non-speech audio segments present during inference. By…

Automatic speech recognition (ASR) has been widely researched with supervised approaches, while many low-resourced languages lack audio-text aligned data, and supervised methods cannot be applied on them. In this work, we propose a…

Computation and Language · Computer Science 2018-08-14 Yi-Chen Chen , Chia-Hao Shen , Sung-Feng Huang , Hung-yi Lee

This paper presents a novel optimization framework for automatic speech recognition (ASR) with the aim of reducing hallucinations produced by an ASR model. The proposed framework optimizes the ASR model to maximize an expected factual…

Audio and Speech Processing · Electrical Eng. & Systems 2023-02-27 Naoyuki Kanda , Takuya Yoshioka , Yang Liu

Speech-enabled systems typically first convert audio to text through an automatic speech recognition (ASR) model and then feed the text to downstream natural language processing (NLP) modules. The errors of the ASR system can seriously…

Computation and Language · Computer Science 2021-03-26 Tong Cui , Jinghui Xiao , Liangyou Li , Xin Jiang , Qun Liu

Speech foundation models trained at a massive scale, both in terms of model and data size, result in robust systems capable of performing multiple speech tasks, including automatic speech recognition (ASR). These models transcend language…

Computation and Language · Computer Science 2025-06-06 Hanin Atwany , Abdul Waheed , Rita Singh , Monojit Choudhury , Bhiksha Raj

Automatic Speech Recognition (ASR) is an active field of research due to its large number of applications and the proliferation of interfaces or computing devices that can support speech processing. However, the bulk of applications are…

Artificial Intelligence · Computer Science 2022-03-03 Jean Louis K. E. Fendji , Diane C. M. Tala , Blaise O. Yenke , Marcellin Atemkeng

Automatic Speech Recognition (ASR) error correction aims to correct recognition errors while preserving accurate text. Although traditional approaches demonstrate moderate effectiveness, LLMs offer a paradigm that eliminates the need for…

Computation and Language · Computer Science 2025-12-24 Yangui Fang , Baixu Chen , Jing Peng , Xu Li , Yu Xi , Chengwei Zhang , Guohui Zhong

In the realm of spoken language understanding (SLU), numerous natural language understanding (NLU) methodologies have been adapted by supplying large language models (LLMs) with transcribed speech instead of conventional written text. In…

In this work, we introduce a simple yet efficient post-processing model for automatic speech recognition (ASR). Our model has Transformer-based encoder-decoder architecture which "translates" ASR model output into grammatically and…

Computation and Language · Computer Science 2019-10-24 Oleksii Hrinchuk , Mariya Popova , Boris Ginsburg

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

Language models play a central role in automatic speech recognition (ASR), yet most methods rely on text-only models unaware of ASR error patterns. Recently, large language models (LLMs) have been applied to ASR correction, but introduce…

Machine Learning · Computer Science 2026-03-18 Zijin Gu , Tatiana Likhomanenko , He Bai , Erik McDermott , Ronan Collobert , Navdeep Jaitly

Employing pre-trained language models (LM) to extract contextualized word representations has achieved state-of-the-art performance on various NLP tasks. However, applying this technique to noisy transcripts generated by automatic speech…

Computation and Language · Computer Science 2020-11-03 Chao-Wei Huang , Yun-Nung Chen

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

This paper addresses the problem of automatic speech recognition (ASR) error detection and their use for improving spoken language understanding (SLU) systems. In this study, the SLU task consists in automatically extracting, from ASR…

Computation and Language · Computer Science 2017-05-29 Edwin Simonnet , Sahar Ghannay , Nathalie Camelin , Yannick Estève , Renato De Mori

Benchmarks for language-guided embodied agents typically assume text-based instructions, but deployed agents will encounter spoken instructions. While Automatic Speech Recognition (ASR) models can bridge the input gap, erroneous ASR…

Computation and Language · Computer Science 2023-10-11 Allen Chang , Xiaoyuan Zhu , Aarav Monga , Seoho Ahn , Tejas Srinivasan , Jesse Thomason

Form about four decades human beings have been dreaming of an intelligent machine which can master the natural speech. In its simplest form, this machine should consist of two subsystems, namely automatic speech recognition (ASR) and speech…

Sound · Computer Science 2013-05-08 Urmila Shrawankar , V. M. Thakare

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

Automatic Speech Recognition (ASR) systems exhibit the best performance on speech that is similar to that on which it was trained. As such, underrepresented varieties including regional dialects, minority-speakers, and low-resource…

Computation and Language · Computer Science 2023-05-15 Emma O'Neill , Julie Carson-Berndsen
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