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Transcription or sub-titling of open-domain videos is still a challenging domain for Automatic Speech Recognition (ASR) due to the data's challenging acoustics, variable signal processing and the essentially unrestricted domain of the data.…

音频与语音处理 · 电气工程与系统科学 2018-04-27 Shruti Palaskar , Ramon Sanabria , Florian Metze

A simplified speech recognition system that uses the maximum mutual information (MMI) criterion is considered. End-to-end training using gradient descent is suggested, similarly to the training of connectionist temporal classification…

机器学习 · 计算机科学 2017-07-18 Lior Fritz , David Burshtein

In Automatic Speech Recognition (ASR) systems, a recurring obstacle is the generation of narrowly focused output distributions. This phenomenon emerges as a side effect of Connectionist Temporal Classification (CTC), a robust sequence…

音频与语音处理 · 电气工程与系统科学 2024-03-19 SooHwan Eom , Eunseop Yoon , Hee Suk Yoon , Chanwoo Kim , Mark Hasegawa-Johnson , Chang D. Yoo

This paper presents a novel algorithm for building an automatic speech recognition (ASR) model with imperfect training data. Imperfectly transcribed speech is a prevalent issue in human-annotated speech corpora, which degrades the…

计算与语言 · 计算机科学 2023-06-05 Dongji Gao , Matthew Wiesner , Hainan Xu , Leibny Paola Garcia , Daniel Povey , Sanjeev Khudanpur

Adapting Automatic Speech Recognition (ASR) models to new domains results in a deterioration of performance on the original domain(s), a phenomenon called Catastrophic Forgetting (CF). Even monolingual ASR models cannot be extended to new…

音频与语音处理 · 电气工程与系统科学 2026-01-22 Steven Vander Eeckt , Hugo Van hamme

Connectionist Temporal Classification (CTC) is a widely used method for automatic speech recognition (ASR), renowned for its simplicity and computational efficiency. However, it often falls short in recognition performance. In this work, we…

音频与语音处理 · 电气工程与系统科学 2025-02-17 Zengwei Yao , Wei Kang , Xiaoyu Yang , Fangjun Kuang , Liyong Guo , Han Zhu , Zengrui Jin , Zhaoqing Li , Long Lin , Daniel Povey

Long Short Term Memory Connectionist Temporal Classification (LSTM-CTC) based end-to-end models are widely used in speech recognition due to its simplicity in training and efficiency in decoding. In conventional LSTM-CTC based models, a…

计算与语言 · 计算机科学 2019-03-14 Yangyang Shi , Mei-Yuh Hwang , Xin Lei

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

Connectionist Temporal Classification (CTC) is a widely used approach for automatic speech recognition (ASR) that performs conditionally independent monotonic alignment. However for translation, CTC exhibits clear limitations due to the…

计算与语言 · 计算机科学 2022-10-12 Brian Yan , Siddharth Dalmia , Yosuke Higuchi , Graham Neubig , Florian Metze , Alan W Black , Shinji Watanabe

Speech technology is a field that encompasses various techniques and tools used to enable machines to interact with speech, such as automatic speech recognition (ASR), spoken dialog systems, and others, allowing a device to capture spoken…

音频与语音处理 · 电气工程与系统科学 2024-03-14 Amanda Phaladi , Thipe Modipa

The mismatch of speech length and text length poses a challenge in automatic speech recognition (ASR). In previous research, various approaches have been employed to align text with speech, including the utilization of Connectionist…

计算与语言 · 计算机科学 2025-10-14 Peng Fan , Wenping Wang , Fei Deng

The success of self-attention in NLP has led to recent applications in end-to-end encoder-decoder architectures for speech recognition. Separately, connectionist temporal classification (CTC) has matured as an alignment-free,…

音频与语音处理 · 电气工程与系统科学 2019-07-02 Julian Salazar , Katrin Kirchhoff , Zhiheng Huang

We present Mask CTC, a novel non-autoregressive end-to-end automatic speech recognition (ASR) framework, which generates a sequence by refining outputs of the connectionist temporal classification (CTC). Neural sequence-to-sequence models…

音频与语音处理 · 电气工程与系统科学 2020-08-18 Yosuke Higuchi , Shinji Watanabe , Nanxin Chen , Tetsuji Ogawa , Tetsunori Kobayashi

Contextual ASR or hotword customization holds substantial practical value. Despite the impressive performance of current end-to-end (E2E) automatic speech recognition (ASR) systems, they often face challenges in accurately recognizing rare…

音频与语音处理 · 电气工程与系统科学 2024-11-12 Guanrou Yang , Ziyang Ma , Zhifu Gao , Shiliang Zhang , Xie Chen

Recently, there has been an increasing interest in end-to-end speech recognition that directly transcribes speech to text without any predefined alignments. One approach is the attention-based encoder-decoder framework that learns a mapping…

计算与语言 · 计算机科学 2017-02-02 Suyoun Kim , Takaaki Hori , Shinji Watanabe

This paper presents an overview and evaluation of some of the end-to-end ASR models on long-form audios. We study three categories of Automatic Speech Recognition(ASR) models based on their core architecture: (1) convolutional, (2)…

音频与语音处理 · 电气工程与系统科学 2023-09-22 Nithin Rao Koluguri , Samuel Kriman , Georgy Zelenfroind , Somshubra Majumdar , Dima Rekesh , Vahid Noroozi , Jagadeesh Balam , Boris Ginsburg

It is challenging to extract semantic meanings directly from audio signals in spoken language understanding (SLU), due to the lack of textual information. Popular end-to-end (E2E) SLU models utilize sequence-to-sequence automatic speech…

计算与语言 · 计算机科学 2023-06-05 Jixuan Wang , Martin Radfar , Kai Wei , Clement Chung

In this paper, we propose an end-to-end Mandarin tone classification method from continuous speech utterances utilizing both the spectrogram and the short-term context information as the input. Both spectrograms and context segment features…

声音 · 计算机科学 2021-12-20 Jiyang Tang , Ming Li

End-to-end speech recognition systems usually require huge amounts of labeling resource, while annotating the speech data is complicated and expensive. Active learning is the solution by selecting the most valuable samples for annotation.…

音频与语音处理 · 电气工程与系统科学 2021-07-12 Jian Luo , Jianzong Wang , Ning Cheng , Jing Xiao

End-to-end transformer-based models epitomize the cutting-edge in Automatic Speech Recognition (ASR) systems. Despite their substantial benefits, these models demand extensive training data to perform optimally, presenting a significant…

音频与语音处理 · 电气工程与系统科学 2024-09-10 Abdulhady Abas Abdullah , Hadi Veisi , Tarik Rashid