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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

Multilingual Automated Speech Recognition (ASR) systems allow for the joint training of data-rich and data-scarce languages in a single model. This enables data and parameter sharing across languages, which is especially beneficial for the…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-22 Arindrima Datta , Bhuvana Ramabhadran , Jesse Emond , Anjuli Kannan , Brian Roark

We consider the problem of recognizing speech utterances spoken to a device which is generating a known sound waveform; for example, recognizing queries issued to a digital assistant which is generating responses to previous user inputs.…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-03 Nathan Howard , Alex Park , Turaj Zakizadeh Shabestary , Alexander Gruenstein , Rohit Prabhavalkar

Speech-to-text errors made by automatic speech recognition (ASR) systems negatively impact downstream models. Error correction models as a post-processing text editing method have been recently developed for refining the ASR outputs.…

Computation and Language · Computer Science 2023-06-22 Ziji Zhang , Zhehui Wang , Rajesh Kamma , Sharanya Eswaran , Narayanan Sadagopan

In recent years, speech-based self-supervised learning (SSL) has made significant progress in various tasks, including automatic speech recognition (ASR). An ASR model with decent performance can be realized by fine-tuning an SSL model with…

Audio and Speech Processing · Electrical Eng. & Systems 2023-08-30 Zhisheng Zheng , Ziyang Ma , Yu Wang , Xie Chen

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

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

In this paper, we propose a novel auxiliary loss function for target-speaker automatic speech recognition (ASR). Our method automatically extracts and transcribes target speaker's utterances from a monaural mixture of multiple speakers…

Computation and Language · Computer Science 2019-06-27 Naoyuki Kanda , Shota Horiguchi , Ryoichi Takashima , Yusuke Fujita , Kenji Nagamatsu , Shinji Watanabe

The transcription quality of automatic speech recognition (ASR) systems degrades significantly when transcribing audios coming from unseen domains. We propose an unsupervised error correction method for unsupervised ASR domain adaption,…

Sound · Computer Science 2022-09-27 Long Mai , Julie Carson-Berndsen

Speech enhancement methods are commonly believed to improve the performance of automatic speech recognition (ASR) in noisy environments. However, the effectiveness of these techniques cannot be taken for granted in the case of modern…

Sequence-to-sequence models, such as attention-based models in automatic speech recognition (ASR), are typically trained to optimize the cross-entropy criterion which corresponds to improving the log-likelihood of the data. However, system…

Computation and Language · Computer Science 2017-12-06 Rohit Prabhavalkar , Tara N. Sainath , Yonghui Wu , Patrick Nguyen , Zhifeng Chen , Chung-Cheng Chiu , Anjuli Kannan

In automatic speech recognition, any factor that alters the acoustic properties of speech can pose a challenge to the system's performance. This paper presents a novel approach for automatic whispered speech recognition in the Irish dialect…

Audio and Speech Processing · Electrical Eng. & Systems 2024-11-05 Aref Farhadipour , Homa Asadi , Volker Dellwo

On-device Automatic Speech Recognition (ASR) models trained on speech data of a large population might underperform for individuals unseen during training. This is due to a domain shift between user data and the original training data,…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-23 Jisi Zhang , Vandana Rajan , Haaris Mehmood , David Tuckey , Pablo Peso Parada , Md Asif Jalal , Karthikeyan Saravanan , Gil Ho Lee , Jungin Lee , Seokyeong Jung

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

Recent work has shown that it is possible to train an $\textit{unsupervised}$ automatic speech recognition (ASR) system using only unpaired audio and text. Existing unsupervised ASR methods assume that no labeled data can be used for…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-19 Tatiana Likhomanenko , Loren Lugosch , Ronan Collobert

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 digitization of agricultural advisory services in India requires robust Automatic Speech Recognition (ASR) systems capable of accurately transcribing domain-specific terminology in multiple Indian languages. This paper presents a…

Audio and Speech Processing · Electrical Eng. & Systems 2026-02-09 Chandrashekar M S , Vineet Singh , Lakshmi Pedapudi

Objective assessment of speech that reflects meaningful changes in communication is crucial for clinical decision making and reproducible research. While existing objective assessments, particularly reference-based approaches, can capture…

Sound · Computer Science 2026-02-17 Bence Mark Halpern , Thomas Tienkamp , Defne Abur , Tomoki Toda

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

Speech separation has been successfully applied as a frontend processing module of conversation transcription systems thanks to its ability to handle overlapped speech and its flexibility to combine with downstream tasks such as automatic…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-06 Jian Wu , Zhuo Chen , Sanyuan Chen , Yu Wu , Takuya Yoshioka , Naoyuki Kanda , Shujie Liu , Jinyu Li