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The choice of modeling units is critical to automatic speech recognition (ASR) tasks. Conventional ASR systems typically choose context-dependent states (CD-states) or context-dependent phonemes (CD-phonemes) as their modeling units.…

Audio and Speech Processing · Electrical Eng. & Systems 2018-05-22 Shiyu Zhou , Linhao Dong , Shuang Xu , Bo Xu

Modeling unit and model architecture are two key factors of Recurrent Neural Network Transducer (RNN-T) in end-to-end speech recognition. To improve the performance of RNN-T for Mandarin speech recognition task, a novel transformer…

Audio and Speech Processing · Electrical Eng. & Systems 2020-04-29 Li Fu , Xiaoxiao Li , Libo Zi

We present FireRedASR, a family of large-scale automatic speech recognition (ASR) models for Mandarin, designed to meet diverse requirements in superior performance and optimal efficiency across various applications. FireRedASR comprises…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-27 Kai-Tuo Xu , Feng-Long Xie , Xu Tang , Yao Hu

This report describes the submitted system to the In-Car Multi-Channel Automatic Speech Recognition (ICMC-ASR) challenge, which considers the ASR task with multi-speaker overlapping and Mandarin accent dynamics in the ICMC case. We…

Dual-encoder structure successfully utilizes two language-specific encoders (LSEs) for code-switching speech recognition. Because LSEs are initialized by two pre-trained language-specific models (LSMs), the dual-encoder structure can…

Computation and Language · Computer Science 2022-07-13 Tongtong Song , Qiang Xu , Meng Ge , Longbiao Wang , Hao Shi , Yongjie Lv , Yuqin Lin , Jianwu Dang

We propose a CTC alignment-based single step non-autoregressive transformer (CASS-NAT) for speech recognition. Specifically, the CTC alignment contains the information of (a) the number of tokens for decoder input, and (b) the time span of…

Audio and Speech Processing · Electrical Eng. & Systems 2021-02-15 Ruchao Fan , Wei Chu , Peng Chang , Jing Xiao

The kNN-CTC model has proven to be effective for monolingual automatic speech recognition (ASR). However, its direct application to multilingual scenarios like code-switching, presents challenges. Although there is potential for performance…

Computation and Language · Computer Science 2025-01-20 Jiaming Zhou , Shiwan Zhao , Hui Wang , Tian-Hao Zhang , Haoqin Sun , Xuechen Wang , Yong Qin

The bi-encoder structure has been intensively investigated in code-switching (CS) automatic speech recognition (ASR). However, most existing methods require the structures of two monolingual ASR models (MAMs) should be the same and only use…

Audio and Speech Processing · Electrical Eng. & Systems 2022-11-03 Tongtong Song , Qiang Xu , Haoyu Lu , Longbiao Wang , Hao Shi , Yuqin Lin , Yanbing Yang , Jianwu Dang

Code-Switching (CS) multilingual Automatic Speech Recognition (ASR) models can transcribe speech containing two or more alternating languages during a conversation. This paper proposes (1) a new method for creating code-switching ASR…

Audio and Speech Processing · Electrical Eng. & Systems 2023-09-19 Kunal Dhawan , Dima Rekesh , Boris Ginsburg

Automated Speech Recognition (ASR) is an interdisciplinary application of computer science and linguistics that enable us to derive the transcription from the uttered speech waveform. It finds several applications in Military like…

Computation and Language · Computer Science 2022-04-05 Priyank Dubey , Bilal Shah

We propose a) a Language Agnostic end-to-end Speech Translation model (LAST), and b) a data augmentation strategy to increase code-switching (CS) performance. With increasing globalization, multiple languages are increasingly used…

Computation and Language · Computer Science 2022-11-10 Christian Huber , Enes Yavuz Ugan , Alexander Waibel

End-to-end speech recognition is a promising technology for enabling compact automatic speech recognition (ASR) systems since it can unify the acoustic and language model into a single neural network. However, as a drawback, training of…

Computation and Language · Computer Science 2022-02-17 Yotaro Kubo , Shigeki Karita , Michiel Bacchiani

Combining end-to-end speech translation (ST) and non-autoregressive (NAR) generation is promising in language and speech processing for their advantages of less error propagation and low latency. In this paper, we investigate the potential…

Computation and Language · Computer Science 2023-05-30 Chen Xu , Xiaoqian Liu , Xiaowen Liu , Qingxuan Sun , Yuhao Zhang , Murun Yang , Qianqian Dong , Tom Ko , Mingxuan Wang , Tong Xiao , Anxiang Ma , Jingbo Zhu

The advances in attention-based encoder-decoder (AED) networks have brought great progress to end-to-end (E2E) automatic speech recognition (ASR). One way to further improve the performance of AED-based E2E ASR is to introduce an extra text…

Sound · Computer Science 2021-10-26 Wei Wang , Shuo Ren , Yao Qian , Shujie Liu , Yu Shi , Yanmin Qian , Michael Zeng

With the advent of globalization, there is an increasing demand for multilingual automatic speech recognition (ASR), handling language and dialectal variation of spoken content. Recent studies show its efficacy over monolingual systems. In…

Computation and Language · Computer Science 2021-07-06 Shammur Absar Chowdhury , Amir Hussein , Ahmed Abdelali , Ahmed Ali

Leveraging context information is an intuitive idea to improve performance on conversational automatic speech recognition(ASR). Previous works usually adopt recognized hypotheses of historical utterances as preceding context, which may bias…

Audio and Speech Processing · Electrical Eng. & Systems 2022-07-05 Kun Wei , Yike Zhang , Sining Sun , Lei Xie , Long Ma

Although automatic speech recognition (ASR) systems achieved significantly improvements in recent years, spoken language recognition error occurs which can be easily spotted by human beings. Various language modeling techniques have been…

Computation and Language · Computer Science 2021-12-21 Yun Zhao , Xuerui Yang , Jinchao Wang , Yongyu Gao , Chao Yan , Yuanfu Zhou

In this work, we propose a new parameter-efficient learning framework based on neural model reprogramming for cross-lingual speech recognition, which can \textbf{re-purpose} well-trained English automatic speech recognition (ASR) models to…

This paper presents the work of restoring punctuation for ASR transcripts generated by multilingual ASR systems. The focus languages are English, Mandarin, and Malay which are three of the most popular languages in Singapore. To the best of…

Computation and Language · Computer Science 2024-12-03 Abhinav Rao , Ho Thi-Nga , Chng Eng-Siong

Visual speech recognition (VSR) aims to transcribe spoken content from silent lip-motion videos and is particularly challenging in Mandarin due to severe viseme ambiguity and pervasive homophones. We propose VALLR-Pin, a two-stage Mandarin…

Computer Vision and Pattern Recognition · Computer Science 2025-12-30 Chang Sun , Dongliang Xie , Wanpeng Xie , Bo Qin , Hong Yang