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This paper presented our work on applying Recurrent Deep Stacking Networks (RDSNs) to Robust Automatic Speech Recognition (ASR) tasks. In the paper, we also proposed a more efficient yet comparable substitute to RDSN, Bi- Pass Stacking…

Computation and Language · Computer Science 2020-11-12 Peidong Wang , Zhongqiu Wang , Deliang Wang

Self-attention models have been successfully applied in end-to-end speech recognition systems, which greatly improve the performance of recognition accuracy. However, such attention-based models cannot be used in online speech recognition,…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-24 Jian Luo , Jianzong Wang , Ning Cheng , Jing Xiao

We propose a speech enhancement method using a causal deep neural network~(DNN) for real-time applications. DNN has been widely used for estimating a time-frequency~(T-F) mask which enhances a speech signal. One popular DNN structure for…

Audio and Speech Processing · Electrical Eng. & Systems 2020-02-17 Daiki Takeuchi , Kohei Yatabe , Yuma Koizumi , Yasuhiro Oikawa , Noboru Harada

We report on aggressive quantization strategies that greatly accelerate inference of Recurrent Neural Network Transducers (RNN-T). We use a 4 bit integer representation for both weights and activations and apply Quantization Aware Training…

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…

This paper presents methods to accelerate recurrent neural network based language models (RNNLMs) for online speech recognition systems. Firstly, a lossy compression of the past hidden layer outputs (history vector) with caching is…

Computation and Language · Computer Science 2018-01-31 Kyungmin Lee , Chiyoun Park , Namhoon Kim , Jaewon Lee

The Recurrent Neural Network-Transducer (RNN-T) is widely adopted in end-to-end (E2E) automatic speech recognition (ASR) tasks but depends heavily on large-scale, high-quality annotated data, which are often costly and difficult to obtain.…

Computation and Language · Computer Science 2025-11-07 Dongji Gao , Chenda Liao , Changliang Liu , Matthew Wiesner , Leibny Paola Garcia , Daniel Povey , Sanjeev Khudanpur , Jian Wu

Traditional automatic speech recognition~(ASR) systems usually focus on individual utterances, without considering long-form speech with useful historical information, which is more practical in real scenarios. Simply attending longer…

Sound · Computer Science 2022-11-18 Xun Gong , Yu Wu , Jinyu Li , Shujie Liu , Rui Zhao , Xie Chen , Yanmin Qian

The recurrent neural network transducer (RNN-T) objective plays a major role in building today's best automatic speech recognition (ASR) systems for production. Similarly to the connectionist temporal classification (CTC) objective, the…

Computation and Language · Computer Science 2022-04-01 Niko Moritz , Takaaki Hori , Shinji Watanabe , Jonathan Le Roux

End-to-end automatic speech recognition (ASR) models with a single neural network have recently demonstrated state-of-the-art results compared to conventional hybrid speech recognizers. Specifically, recurrent neural network transducer…

Computation and Language · Computer Science 2020-11-10 Chunxi Liu , Frank Zhang , Duc Le , Suyoun Kim , Yatharth Saraf , Geoffrey Zweig

Beam Tree Recursive Neural Network (BT-RvNN) was recently proposed as a simple extension of Gumbel Tree RvNN and it was shown to achieve state-of-the-art length generalization performance in ListOps while maintaining comparable performance…

Machine Learning · Computer Science 2023-11-09 Jishnu Ray Chowdhury , Cornelia Caragea

Neural transducers (NT) provide an effective framework for speech streaming, demonstrating strong performance in automatic speech recognition (ASR). However, the application of NT to speech translation (ST) remains challenging, as existing…

Computation and Language · Computer Science 2025-06-04 Amir Hussein , Cihan Xiao , Matthew Wiesner , Dan Povey , Leibny Paola Garcia , Sanjeev Khudanpur

Recently, the recurrent neural network transducer (RNN-T) architecture has become an emerging trend in end-to-end automatic speech recognition research due to its advantages of being capable for online streaming speech recognition. However,…

Computation and Language · Computer Science 2020-05-05 Hu Hu , Rui Zhao , Jinyu Li , Liang Lu , Yifan Gong

Recurrent neural network(RNN) has been broadly applied to natural language processing(NLP) problems. This kind of neural network is designed for modeling sequential data and has been testified to be quite efficient in sequential tagging…

Machine Learning · Computer Science 2016-02-22 Yushi Yao , Zheng Huang

Comprehending the overall intent of an utterance helps a listener recognize the individual words spoken. Inspired by this fact, we perform a novel study of the impact of explicitly incorporating intent representations as additional…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-22 Swayambhu Nath Ray , Minhua Wu , Anirudh Raju , Pegah Ghahremani , Raghavendra Bilgi , Milind Rao , Harish Arsikere , Ariya Rastrow , Andreas Stolcke , Jasha Droppo

In the last few years, an emerging trend in automatic speech recognition research is the study of end-to-end (E2E) systems. Connectionist Temporal Classification (CTC), Attention Encoder-Decoder (AED), and RNN Transducer (RNN-T) are the…

Computation and Language · Computer Science 2019-09-30 Jinyu Li , Rui Zhao , Hu Hu , Yifan Gong

In sequence learning tasks such as language modelling, Recurrent Neural Networks must learn relationships between input features separated by time. State of the art models such as LSTM and Transformer are trained by backpropagation of…

Machine Learning · Computer Science 2019-12-04 Jeremy Gordon , David Rawlinson , Subutai Ahmad

In automatic speech recognition (ASR) systems, recurrent neural network language models (RNNLM) are used to rescore a word lattice or N-best hypotheses list. Due to the expensive training, the RNNLM's vocabulary set accommodates only small…

Computation and Language · Computer Science 2021-07-22 Yerbolat Khassanov , Eng Siong Chng

Keyword Spotting (KWS) provides the start signal of ASR problem, and thus it is essential to ensure a high recall rate. However, its real-time property requires low computation complexity. This contradiction inspires people to find a…

Computation and Language · Computer Science 2018-11-07 Yixiao Qu , Sihao Xue , Zhenyi Ying , Hang Zhou , Jue Sun

Speech transcription, emotion recognition, and language identification are usually considered to be three different tasks. Each one requires a different model with a different architecture and training process. We propose using a recurrent…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-29 Zvi Kons , Hagai Aronowitz , Edmilson Morais , Matheus Damasceno , Hong-Kwang Kuo , Samuel Thomas , George Saon