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Recent advances in Automatic Speech Recognition (ASR) demonstrated how end-to-end systems are able to achieve state-of-the-art performance. There is a trend towards deeper neural networks, however those ASR models are also more complex and…

Audio and Speech Processing · Electrical Eng. & Systems 2020-07-22 Ludwig Kürzinger , Edgar Ricardo Chavez Rosas , Lujun Li , Tobias Watzel , Gerhard Rigoll

We propose a novel approach to end-to-end automatic speech recognition (ASR) to achieve efficient speech in-context learning (SICL) for (i) long-form speech decoding, (ii) test-time speaker adaptation, and (iii) test-time contextual…

Audio and Speech Processing · Electrical Eng. & Systems 2024-10-01 Hao Yen , Shaoshi Ling , Guoli Ye

This paper proposes a unified framework, All-in-One ASR, that allows a single model to support multiple automatic speech recognition (ASR) paradigms, including connectionist temporal classification (CTC), attention-based encoder-decoder…

Audio and Speech Processing · Electrical Eng. & Systems 2025-12-15 Takafumi Moriya , Masato Mimura , Tomohiro Tanaka , Hiroshi Sato , Ryo Masumura , Atsunori Ogawa

Automatic Speech Recognition (ASR) systems are often optimized to work best for speakers with canonical speech patterns. Unfortunately, these systems perform poorly when tested on atypical speech and heavily accented speech. It has…

Computation and Language · Computer Science 2021-09-16 Katrin Tomanek , Vicky Zayats , Dirk Padfield , Kara Vaillancourt , Fadi Biadsy

This paper studies a novel pre-training technique with unpaired speech data, Speech2C, for encoder-decoder based automatic speech recognition (ASR). Within a multi-task learning framework, we introduce two pre-training tasks for the…

Sound · Computer Science 2022-06-22 Junyi Ao , Ziqiang Zhang , Long Zhou , Shujie Liu , Haizhou Li , Tom Ko , Lirong Dai , Jinyu Li , Yao Qian , Furu Wei

Radio speech echo is a specific phenomenon in the air traffic control (ATC) domain, which degrades speech quality and further impacts automatic speech recognition (ASR) accuracy. In this work, a time-domain recognition-oriented speech…

Sound · Computer Science 2024-07-31 Xincheng Yu , Dongyue Guo , Jianwei Zhang , Yi Lin

In the present paper, an attempt is made to combine Mask-CTC and the triggered attention mechanism to construct a streaming end-to-end automatic speech recognition (ASR) system that provides high performance with low latency. The triggered…

Sound · Computer Science 2021-10-22 Huaibo Zhao , Yosuke Higuchi , Tetsuji Ogawa , Tetsunori Kobayashi

We propose self-speculative decoding for speech-aware LLMs by using the CTC encoder as a draft model to accelerate auto-regressive (AR) inference and improve ASR accuracy. Our three-step procedure works as follows: (1) if the frame…

Audio and Speech Processing · Electrical Eng. & Systems 2026-03-13 George Saon , Samuel Thomas , Takashi Fukuda , Tohru Nagano , Avihu Dekel , Luis Lastras

There has been an increasing interest in large speech models that can perform multiple tasks in a single model. Such models usually adopt an encoder-decoder or decoder-only architecture due to their popularity and good performance in many…

Computation and Language · Computer Science 2024-08-28 Yifan Peng , Yui Sudo , Muhammad Shakeel , Shinji Watanabe

End-to-end speech recognition models trained using joint Connectionist Temporal Classification (CTC)-Attention loss have gained popularity recently. In these models, a non-autoregressive CTC decoder is often used at inference time due to…

Computation and Language · Computer Science 2022-11-15 Saket Dingliwal , Monica Sunkara , Sravan Bodapati , Srikanth Ronanki , Jeff Farris , Katrin Kirchhoff

This study addresses robust automatic speech recognition (ASR) by introducing a Conformer-based acoustic model. The proposed model builds on the wide residual bi-directional long short-term memory network (WRBN) with utterance-wise dropout…

Sound · Computer Science 2022-10-21 Yufeng Yang , Peidong Wang , DeLiang Wang

Automatic Speech Recognition (ASR) in conversational settings presents unique challenges, including extracting relevant contextual information from previous conversational turns. Due to irrelevant content, error propagation, and redundancy,…

Sound · Computer Science 2024-04-30 Kun Wei , Bei Li , Hang Lv , Quan Lu , Ning Jiang , Lei Xie

Transformer-based end-to-end (E2E) automatic speech recognition (ASR) systems have recently gained wide popularity, and are shown to outperform E2E models based on recurrent structures on a number of ASR tasks. However, like other E2E…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-30 Mohan Li , Catalin Zorila , Rama Doddipatla

This paper presents the use of non-autoregressive (NAR) approaches for joint automatic speech recognition (ASR) and spoken language understanding (SLU) tasks. The proposed NAR systems employ a Conformer encoder that applies connectionist…

Audio and Speech Processing · Electrical Eng. & Systems 2023-04-24 Mohan Li , Rama Doddipatla

Recently Convolution-augmented Transformer (Conformer) has shown promising results in Automatic Speech Recognition (ASR), outperforming the previous best published Transformer Transducer. In this work, we believe that the output information…

Computation and Language · Computer Science 2022-12-02 Xiaoming Ren , Huifeng Zhu , Liuwei Wei , Minghui Wu , Jie Hao

End-to-end multilingual speech recognition models handle multiple languages through a single model, often incorporating language identification to automatically detect the language of incoming speech. Since the common scenario is where the…

Sound · Computer Science 2024-06-19 Yosuke Kashiwagi , Hayato Futami , Emiru Tsunoo , Siddhant Arora , Shinji Watanabe

This paper investigates four types of cross-utterance speech contexts modeling approaches for streaming and non-streaming Conformer-Transformer (C-T) ASR systems: i) input audio feature concatenation; ii) cross-utterance Encoder embedding…

Audio and Speech Processing · Electrical Eng. & Systems 2025-08-15 Mingyu Cui , Mengzhe Geng , Jiajun Deng , Chengxi Deng , Jiawen Kang , Shujie Hu , Guinan Li , Tianzi Wang , Zhaoqing Li , Xie Chen , Xunying Liu

End-to-end (E2E) automatic speech recognition (ASR) systems often have difficulty recognizing uncommon words, that appear infrequently in the training data. One promising method, to improve the recognition accuracy on such rare words, is to…

Computation and Language · Computer Science 2021-11-08 Feng-Ju Chang , Jing Liu , Martin Radfar , Athanasios Mouchtaris , Maurizio Omologo , Ariya Rastrow , Siegfried Kunzmann

Thanks to the rise of deep learning and the availability of large-scale audio-visual databases, recent advances have been achieved in Visual Speech Recognition (VSR). Similar to other speech processing tasks, these end-to-end VSR systems…

Computer Vision and Pattern Recognition · Computer Science 2024-02-21 David Gimeno-Gómez , Carlos-D. Martínez-Hinarejos

The recently proposed Conformer architecture has shown state-of-the-art performances in Automatic Speech Recognition by combining convolution with attention to model both local and global dependencies. In this paper, we study how to reduce…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-09 Maxime Burchi , Valentin Vielzeuf