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Conversational automatic speech recognition (ASR) is a task to recognize conversational speech including multiple speakers. Unlike sentence-level ASR, conversational ASR can naturally take advantages from specific characteristics of…

声音 · 计算机科学 2022-02-18 Kun Wei , Yike Zhang , Sining Sun , Lei Xie , Long Ma

In sequence-to-sequence Transformer ASR, autoregressive (AR) models achieve strong accuracy but suffer from slow decoding, while non-autoregressive (NAR) models enable parallel decoding at the cost of degraded performance. We propose a…

音频与语音处理 · 电气工程与系统科学 2026-02-26 Hao Yen , Pin-Jui Ku , Ante Jukić , Sabato Marco Siniscalchi

Recent zero-shot text-to-speech (TTS) systems face a common dilemma: autoregressive (AR) models suffer from slow generation and lack duration controllability, while non-autoregressive (NAR) models lack temporal modeling and typically…

音频与语音处理 · 电气工程与系统科学 2025-08-06 Yifan Yang , Shujie Liu , Jinyu Li , Yuxuan Hu , Haibin Wu , Hui Wang , Jianwei Yu , Lingwei Meng , Haiyang Sun , Yanqing Liu , Yan Lu , Kai Yu , Xie Chen

In this work, we propose a new automatic speech recognition (ASR) system based on feature learning and an end-to-end training procedure for air traffic control (ATC) systems. The proposed model integrates the feature learning block,…

声音 · 计算机科学 2021-11-05 Peng Fan , Dongyue Guo , Yi Lin , Bo Yang , Jianwei Zhang

Non-autoregressive models greatly improve decoding speed over typical sequence-to-sequence models, but suffer from degraded performance. Infilling and iterative refinement models make up some of this gap by editing the outputs of a…

音频与语音处理 · 电气工程与系统科学 2020-10-28 Ethan A. Chi , Julian Salazar , Katrin Kirchhoff

This review paper provides a comprehensive analysis of recent advances in automatic speech recognition (ASR) with bidirectional encoder representations from transformers BERT and connectionist temporal classification (CTC) transformers. The…

计算与语言 · 计算机科学 2024-10-15 Noussaiba Djeffal , Hamza Kheddar , Djamel Addou , Ahmed Cherif Mazari , Yassine Himeur

Non-autoregressive (NAR) models generate all the tokens of a sequence in parallel, resulting in faster generation speed compared to their autoregressive (AR) counterparts but at the cost of lower accuracy. Different techniques including…

计算与语言 · 计算机科学 2020-05-12 Yi Ren , Jinglin Liu , Xu Tan , Zhou Zhao , Sheng Zhao , Tie-Yan Liu

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…

音频与语音处理 · 电气工程与系统科学 2021-07-19 Yuya Fujita , Tianzi Wang , Shinji Watanabe , Motoi Omachi

Training automatic speech recognition (ASR) systems requires large amounts of well-curated paired data. However, human annotators usually perform "non-verbatim" transcription, which can result in poorly trained models. In this paper, we…

音频与语音处理 · 电气工程与系统科学 2023-09-28 Dongji Gao , Hainan Xu , Desh Raj , Leibny Paola Garcia Perera , Daniel Povey , Sanjeev Khudanpur

While autoregressive (AR) LLM-based ASR systems achieve strong accuracy, their sequential decoding limits parallelism and incurs high latency. We propose NLE, a non-autoregressive (NAR) approach that formulates speech recognition as…

音频与语音处理 · 电气工程与系统科学 2026-03-10 Avihu Dekel , Samuel Thomas , Takashi Fukada , George Saon

Automatic speech recognition (ASR) tasks are resolved by end-to-end deep learning models, which benefits us by less preparation of raw data, and easier transformation between languages. We propose a novel end-to-end deep learning model…

音频与语音处理 · 电气工程与系统科学 2018-10-31 Xinpei Zhou , Jiwei Li , Xi Zhou

Temporal connectionist temporal classification (CTC)-based automatic speech recognition (ASR) is one of the most successful end to end (E2E) ASR frameworks. However, due to the token independence assumption in decoding, an external language…

音频与语音处理 · 电气工程与系统科学 2023-09-26 Xugang Lu , Peng Shen , Yu Tsao , Hisashi Kawai

Recently, end-to-end speech recognition with a hybrid model consisting of the connectionist temporal classification(CTC) and the attention encoder-decoder achieved state-of-the-art results. In this paper, we propose a novel CTC decoder…

声音 · 计算机科学 2018-11-02 Zhe Yuan , Zhuoran Lyu , Jiwei Li , Xi Zhou

Convolutional Neural Networks (CNNs) are effective models for reducing spectral variations and modeling spectral correlations in acoustic features for automatic speech recognition (ASR). Hybrid speech recognition systems incorporating CNNs…

Speech is one of the most effective ways of communication among humans. Even though audio is the most common way of transmitting speech, very important information can be found in other modalities, such as vision. Vision is particularly…

计算与语言 · 计算机科学 2016-11-22 Ramon Sanabria , Florian Metze , Fernando De La Torre

Automatic speech recognition (ASR) systems often rely on autoregressive (AR) Transformer decoder architectures, which limit efficient inference parallelization due to their sequential nature. To this end, non-autoregressive (NAR) approaches…

音频与语音处理 · 电气工程与系统科学 2025-11-13 Tianzi Wang , Xurong Xie , Zengrui Jin , Mengzhe Geng , Jiajun Deng , Zhaoqing Li , Shoukang Hu , Shujie Hu , Guinan Li , Mingyu Cui , Helen Meng , Xunying Liu

Transformer-based models have led to significant innovation in classical and practical subjects as varied as speech processing, natural language processing, and computer vision. On top of the Transformer, attention-based end-to-end…

计算与语言 · 计算机科学 2022-05-19 Fu-Hao Yu , Kuan-Yu Chen

In this study, we propose advancing all-neural speech recognition by directly incorporating attention modeling within the Connectionist Temporal Classification (CTC) framework. In particular, we derive new context vectors using time…

计算与语言 · 计算机科学 2018-03-16 Amit Das , Jinyu Li , Rui Zhao , Yifan Gong

Semi-supervised learning has demonstrated promising results in automatic speech recognition (ASR) by self-training using a seed ASR model with pseudo-labels generated for unlabeled data. The effectiveness of this approach largely relies on…

机器学习 · 计算机科学 2021-02-17 Niko Moritz , Takaaki Hori , Jonathan Le Roux

Consistency regularization (CR) improves the robustness and accuracy of Connectionist Temporal Classification (CTC) by ensuring predictions remain stable across input perturbations. In this work, we propose Align-Consistency, an extension…

音频与语音处理 · 电气工程与系统科学 2026-02-27 Wanting Huang , Weiran Wang