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Non-autoregressive (NAR) modeling has gained more and more attention in speech processing. With recent state-of-the-art attention-based automatic speech recognition (ASR) structure, NAR can realize promising real-time factor (RTF)…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-21 Tianzi Wang , Yuya Fujita , Xuankai Chang , Shinji Watanabe

Having a sequence-to-sequence model which can operate in an online fashion is important for streaming applications such as Voice Search. Neural transducer is a streaming sequence-to-sequence model, but has shown a significant degradation in…

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

Although frame-based models, such as CTC and transducers, have an affinity for streaming automatic speech recognition, their decoding uses no future knowledge, which could lead to incorrect pruning. Conversely, label-based attention…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-25 Emiru Tsunoo , Hayato Futami , Yosuke Kashiwagi , Siddhant Arora , Shinji Watanabe

There has been increasing interest in unifying streaming and non-streaming automatic speech recognition (ASR) models to reduce development, training, and deployment costs. We present a unified framework that trains a single end-to-end ASR…

Efficient execution of deep learning workloads on dataflow architectures is crucial for overcoming memory bottlenecks and maximizing performance. While streaming intermediate results between computation kernels can significantly improve…

Hardware Architecture · Computer Science 2025-09-24 Hanchen Ye , Deming Chen

End-to-end (E2E) models fold the acoustic, pronunciation and language models of a conventional speech recognition model into one neural network with a much smaller number of parameters than a conventional ASR system, thus making it suitable…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-14 Bo Li , Shuo-yiin Chang , Tara N. Sainath , Ruoming Pang , Yanzhang He , Trevor Strohman , Yonghui Wu

The recurrent neural network transducer (RNN-T) is a prominent streaming end-to-end (E2E) ASR technology. In RNN-T, the acoustic encoder commonly consists of stacks of LSTMs. Very recently, as an alternative to LSTM layers, the Conformer…

Current ASR systems are mainly trained and evaluated at the utterance level. Long range cross utterance context can be incorporated. A key task is to derive a suitable compact representation of the most relevant history contexts. In…

Audio and Speech Processing · Electrical Eng. & Systems 2023-06-27 Mingyu Cui , Jiawen Kang , Jiajun Deng , Xi Yin , Yutao Xie , Xie Chen , Xunying Liu

Using end-to-end models for speech translation (ST) has increasingly been the focus of the ST community. These models condense the previously cascaded systems by directly converting sound waves into translated text. However, cascaded models…

Computation and Language · Computer Science 2021-01-25 Orion Weller , Matthias Sperber , Christian Gollan , Joris Kluivers

The recent advancement of speech recognition technology has been driven by large-scale datasets and attention-based architectures, but many challenges still remain, especially for low-resource languages and dialects. This paper explores the…

Audio and Speech Processing · Electrical Eng. & Systems 2025-02-06 Jakob Poncelet , Hugo Van hamme

Automatic speech recognition (ASR) systems are primarily evaluated on transcription accuracy. However, in some use cases such as subtitling, verbatim transcription would reduce output readability given limited screen size and reading time.…

Computation and Language · Computer Science 2020-05-26 Danni Liu , Jan Niehues , Gerasimos Spanakis

Recent studies of streaming automatic speech recognition (ASR) recurrent neural network transducer (RNN-T)-based systems have fed the encoder with past contextual information in order to improve its word error rate (WER) performance. In…

Audio and Speech Processing · Electrical Eng. & Systems 2022-10-31 Alejandro Gomez-Alanis , Lukas Drude , Andreas Schwarz , Rupak Vignesh Swaminathan , Simon Wiesler

Automatic Speech Recognition (ASR) using multiple microphone arrays has achieved great success in the far-field robustness. Taking advantage of all the information that each array shares and contributes is crucial in this task. Motivated by…

Computation and Language · Computer Science 2019-02-20 Xiaofei Wang , Ruizhi Li , Sri Harish Mallid , Takaaki Hori , Shinji Watanabe , Hynek Hermansky

As a robust and large-scale multilingual speech recognition model, Whisper has demonstrated impressive results in many low-resource and out-of-distribution scenarios. However, its encoder-decoder structure hinders its application to…

Sound · Computer Science 2025-05-06 Haoyu Wang , Guoqiang Hu , Guodong Lin , Wei-Qiang Zhang , Jian Li

Recently self-supervised learning has emerged as an effective approach to improve the performance of automatic speech recognition (ASR). Under such a framework, the neural network is usually pre-trained with massive unlabeled data and then…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-16 Songjun Cao , Yueteng Kang , Yanzhe Fu , Xiaoshuo Xu , Sining Sun , Yike Zhang , Long Ma

Transformers have recently dominated the ASR field. Although able to yield good performance, they involve an autoregressive (AR) decoder to generate tokens one by one, which is computationally inefficient. To speed up inference,…

Sound · Computer Science 2023-03-31 Zhifu Gao , Shiliang Zhang , Ian McLoughlin , Zhijie Yan

End-to-end approaches have drawn much attention recently for significantly simplifying the construction of an automatic speech recognition (ASR) system. RNN transducer (RNN-T) is one of the popular end-to-end methods. Previous studies have…

Computation and Language · Computer Science 2019-04-24 Senmao Wang , Pan Zhou , Wei Chen , Jia Jia , Lei Xie

We propose the joint speech translation and recognition (JSTAR) model that leverages the fast-slow cascaded encoder architecture for simultaneous end-to-end automatic speech recognition (ASR) and speech translation (ST). The model is…

Audio and Speech Processing · Electrical Eng. & Systems 2024-12-23 Niko Moritz , Ruiming Xie , Yashesh Gaur , Ke Li , Simone Merello , Zeeshan Ahmed , Frank Seide , Christian Fuegen

The attention-based Transformer model has achieved promising results for speech recognition (SR) in the offline mode. However, in the streaming mode, the Transformer model usually incurs significant latency to maintain its recognition…

Audio and Speech Processing · Electrical Eng. & Systems 2020-05-05 Chengyi Wang , Yu Wu , Shujie Liu , Jinyu Li , Liang Lu , Guoli Ye , Ming Zhou

Attention-based encoder-decoder models with autoregressive (AR) decoding have proven to be the dominant approach for automatic speech recognition (ASR) due to their superior accuracy. However, they often suffer from slow inference. This is…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-13 Masao Someki , Nicholas Eng , Yosuke Higuchi , Shinji Watanabe