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Recently, online end-to-end ASR has gained increasing attention. However, the performance of online systems still lags far behind that of offline systems, with a large gap in quality of recognition. For specific scenarios, we can trade-off…

Sound · Computer Science 2020-10-28 Zhifu Gao , Shiliang Zhang , Ming Lei , Ian McLoughlin

Currently, there are mainly three kinds of Transformer encoder based streaming End to End (E2E) Automatic Speech Recognition (ASR) approaches, namely time-restricted methods, chunk-wise methods, and memory-based methods. Generally, all of…

Sound · Computer Science 2022-09-27 Fangyuan Wang , Bo Xu

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

This article describes an efficient training method for online streaming attention-based encoder-decoder (AED) automatic speech recognition (ASR) systems. AED models have achieved competitive performance in offline scenarios by jointly…

Audio and Speech Processing · Electrical Eng. & Systems 2021-08-24 Hirofumi Inaguma , Tatsuya Kawahara

Even with several advancements in multilingual modeling, it is challenging to recognize multiple languages using a single neural model, without knowing the input language and most multilingual models assume the availability of the input…

Audio and Speech Processing · Electrical Eng. & Systems 2024-01-23 Aditya Patil , Vikas Joshi , Purvi Agrawal , Rupesh Mehta

Self-attention network, an attention-based feedforward neural network, has recently shown the potential to replace recurrent neural networks (RNNs) in a variety of NLP tasks. However, it is not clear if the self-attention network could be a…

Computation and Language · Computer Science 2019-02-19 Linhao Dong , Feng Wang , Bo Xu

The attention mechanism of the Listen, Attend and Spell (LAS) model requires the whole input sequence to calculate the attention context and thus is not suitable for online speech recognition. To deal with this problem, we propose…

Computation and Language · Computer Science 2020-05-04 Baiji Liu , Songjun Cao , Sining Sun , Weibin Zhang , Long Ma

The streaming automatic speech recognition (ASR) models are more popular and suitable for voice-based applications. However, non-streaming models provide better performance as they look at the entire audio context. To leverage the benefits…

Sound · Computer Science 2022-08-26 Raviraj Joshi , Subodh Kumar

Attention-based models have been gaining popularity recently for their strong performance demonstrated in fields such as machine translation and automatic speech recognition. One major challenge of attention-based models is the need of…

Computation and Language · Computer Science 2020-11-17 Ching-Feng Yeh , Yongqiang Wang , Yangyang Shi , Chunyang Wu , Frank Zhang , Julian Chan , Michael L. Seltzer

We investigate a monotonic multihead attention (MMA) by extending hard monotonic attention to Transformer-based automatic speech recognition (ASR) for online streaming applications. For streaming inference, all monotonic attention (MA)…

Audio and Speech Processing · Electrical Eng. & Systems 2020-10-01 Hirofumi Inaguma , Masato Mimura , Tatsuya Kawahara

Attention-based encoder-decoder architectures such as Listen, Attend, and Spell (LAS), subsume the acoustic, pronunciation and language model components of a traditional automatic speech recognition (ASR) system into a single neural…

In this work, we propose a streaming AV-ASR system based on a hybrid connectionist temporal classification (CTC)/attention neural network architecture. The audio and the visual encoder neural networks are both based on the conformer…

Audio and Speech Processing · Electrical Eng. & Systems 2023-07-04 Pingchuan Ma , Niko Moritz , Stavros Petridis , Christian Fuegen , Maja Pantic

End-to-end modeling (E2E) of automatic speech recognition (ASR) blends all the components of a traditional speech recognition system into a unified model. Although it simplifies training and decoding pipelines, the unified model is hard to…

Computation and Language · Computer Science 2018-12-06 Zhehuai Chen , Mahaveer Jain , Yongqiang Wang , Michael L. Seltzer , Christian Fuegen

End-to-end speech recognition has become popular in recent years, since it can integrate the acoustic, pronunciation and language models into a single neural network. Among end-to-end approaches, attention-based methods have emerged as…

Sound · Computer Science 2020-06-03 Zhifu Gao , Shiliang Zhang , Ming Lei , Ian McLoughlin

In this paper, we present a new on-device automatic speech recognition (ASR) system based on monotonic chunk-wise attention (MoChA) models trained with large (> 10K hours) corpus. We attained around 90% of a word recognition rate for…

Audio and Speech Processing · Electrical Eng. & Systems 2020-01-06 Kwangyoun Kim , Kyungmin Lee , Dhananjaya Gowda , Junmo Park , Sungsoo Kim , Sichen Jin , Young-Yoon Lee , Jinsu Yeo , Daehyun Kim , Seokyeong Jung , Jungin Lee , Myoungji Han , Chanwoo Kim

Currently, the chunk-wise schemes are often used to make Automatic Speech Recognition (ASR) models to support streaming deployment. However, existing approaches are unable to capture the global context, lack support for parallel training,…

Sound · Computer Science 2024-02-06 Fangyuan Wang , Bo Xu , Bo Xu

Recently, a few novel streaming attention-based sequence-to-sequence (S2S) models have been proposed to perform online speech recognition with linear-time decoding complexity. However, in these models, the decisions to generate tokens are…

Computation and Language · Computer Science 2020-05-18 Hirofumi Inaguma , Yashesh Gaur , Liang Lu , Jinyu Li , Yifan Gong

Attention-based end-to-end automatic speech recognition (ASR) systems have recently demonstrated state-of-the-art results for numerous tasks. However, the application of self-attention and attention-based encoder-decoder models remains…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-06 Niko Moritz , Takaaki Hori , Jonathan Le Roux

Recently, attention-based encoder-decoder (AED) end-to-end (E2E) models have drawn more and more attention in the field of automatic speech recognition (ASR). AED models, however, still have drawbacks when deploying in commercial…

Sound · Computer Science 2021-04-22 Zhichao Wang , Wenwen Yang , Pan Zhou , Wei Chen

Neural end-to-end (E2E) models have become a promising technique to realize practical automatic speech recognition (ASR) systems. When realizing such a system, one important issue is the segmentation of audio to deal with streaming input or…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-19 Yuya Fujita , Tianzi Wang , Shinji Watanabe , Motoi Omachi