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The predominant metric for evaluating speech recognizers, the Word Error Rate (WER) has been extended in different ways to handle transcripts produced by long-form multi-talker speech recognizers. These systems process long transcripts…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-05 Thilo von Neumann , Christoph Boeddeker , Marc Delcroix , Reinhold Haeb-Umbach

We study the effect of applying a language model (LM) on the output of Automatic Speech Recognition (ASR) systems for Indic languages. We fine-tune wav2vec $2.0$ models for $18$ Indic languages and adjust the results with language models…

Computation and Language · Computer Science 2022-06-16 Ankur Dhuriya , Harveen Singh Chadha , Anirudh Gupta , Priyanshi Shah , Neeraj Chhimwal , Rishabh Gaur , Vivek Raghavan

The accuracy of Automated Speech Recognition (ASR) technology has improved, but it is still imperfect in many settings. Researchers who evaluate ASR performance often focus on improving the Word Error Rate (WER) metric, but WER has been…

Human-Computer Interaction · Computer Science 2017-12-29 Sushant Kafle , Matt Huenerfauth

Text data is commonly utilized as a primary input to enhance Speech Emotion Recognition (SER) performance and reliability. However, the reliance on human-transcribed text in most studies impedes the development of practical SER systems,…

Audio and Speech Processing · Electrical Eng. & Systems 2025-03-25 Yuanchao Li , Peter Bell , Catherine Lai

Text encodings from automatic speech recognition (ASR) transcripts and audio representations have shown promise in speech emotion recognition (SER) ever since. Yet, it is challenging to explain the effect of each information stream on the…

Measuring the performance of automatic speech recognition (ASR) systems requires manually transcribed data in order to compute the word error rate (WER), which is often time-consuming and expensive. In this paper, we continue our effort in…

Audio and Speech Processing · Electrical Eng. & Systems 2020-08-11 Ahmed Ali , Steve Renals

Recent advances in speech foundation models are largely driven by scaling both model size and data, enabling them to perform a wide range of tasks, including speech recognition. Traditionally, ASR models are evaluated using metrics like…

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

Many studies have examined the shortcomings of word error rate (WER) as an evaluation metric for automatic speech recognition (ASR) systems. Since WER considers only literal word-level correctness, new evaluation metrics based on semantic…

Computation and Language · Computer Science 2023-12-04 Zitha Sasindran , Harsha Yelchuri , T. V. Prabhakar , Supreeth Rao

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

Automatic speech recognition (ASR) systems are predominantly evaluated using the Word Error Rate (WER). However, raw token-level metrics fail to capture semantic fidelity and routinely obscures the `diversity tax', the disproportionate…

Machine Learning · Computer Science 2026-03-06 Ting-Hui Cheng , Line H. Clemmensen , Sneha Das

Automatic Speech Recognition (ASR) is traditionally evaluated using Word Error Rate (WER), a metric that is insensitive to meaning. Embedding-based semantic metrics are better correlated with human perception, but decoder-based Large…

Modern speech synthesis systems have improved significantly, with synthetic speech being indistinguishable from real speech. However, efficient and holistic evaluation of synthetic speech still remains a significant challenge. Human…

Computation and Language · Computer Science 2023-10-03 Dareen Alharthi , Roshan Sharma , Hira Dhamyal , Soumi Maiti , Bhiksha Raj , Rita Singh

Word error rate (WER) estimation aims to evaluate the quality of an automatic speech recognition (ASR) system's output without requiring ground-truth labels. This task has gained increasing attention as advanced ASR systems are trained on…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-30 Chanho Park , Chengsong Lu , Mingjie Chen , Thomas Hain

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

Recent strides in automatic speech recognition (ASR) have accelerated their application in the medical domain where their performance on accented medical named entities (NE) such as drug names, diagnoses, and lab results, is largely…

Audio and Speech Processing · Electrical Eng. & Systems 2024-06-19 Tejumade Afonja , Tobi Olatunji , Sewade Ogun , Naome A. Etori , Abraham Owodunni , Moshood Yekini

Automatic Speech Recognition (ASR) systems are evaluated using Word Error Rate (WER), which is calculated by comparing the number of errors between the ground truth and the transcription of the ASR system. This calculation, however,…

Computation and Language · Computer Science 2021-02-16 Akshay Krishna Sheshadri , Anvesh Rao Vijjini , Sukhdeep Kharbanda

Conventionally, Automatic Speech Recognition (ASR) systems are evaluated on their ability to correctly recognize each word contained in a speech signal. In this context, the word error rate (WER) metric is the reference for evaluating…

Computation and Language · Computer Science 2026-05-06 Thibault Bañeras Roux , Jane Wottawa , Mickael Rouvier , Teva Merlin , Richard Dufour

Automatic Speech Recognition (ASR) systems are commonly evaluated using aggregate metrics such as Word Error Rate (WER), which do not capture the linguistic structure of errors. Fine-grained analysis, such as Part-of-Speech (PoS)-wise error…

Computation and Language · Computer Science 2026-05-28 Prasenjit K Mudi , Dahlia Devapriya , Sheetal Kalyani

Traditional ASR metrics like WER and CER fail to capture intelligibility, especially for dysarthric and dysphonic speech, where semantic alignment matters more than exact word matches. ASR systems struggle with these speech types, often…

Machine Learning · Computer Science 2025-12-12 Bornali Phukon , Xiuwen Zheng , Mark Hasegawa-Johnson

The amount of freely available systems for automatic speech recognition (ASR) based on neural networks is growing steadily, with equally increasingly reliable predictions. However, the evaluation of trained models is typically exclusively…

Computation and Language · Computer Science 2022-04-13 Johannes Wirth , Rene Peinl