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Connectionist Temporal Classification (CTC) model is a very efficient method for modeling sequences, especially for speech data. In order to use CTC model as an Automatic Speech Recognition (ASR) task, the beam search decoding with an…

Computation and Language · Computer Science 2023-06-28 Minkyu Jung , Ohhyeok Kwon , Seunghyun Seo , Soonshin Seo

Self-supervised learning (SSL) has shown promise in learning representations of audio that are useful for automatic speech recognition (ASR). But, training SSL models like wav2vec~2.0 requires a two-stage pipeline. In this paper we…

Computation and Language · Computer Science 2021-02-16 Chaitanya Talnikar , Tatiana Likhomanenko , Ronan Collobert , Gabriel Synnaeve

Conventional automatic speech recognition (ASR) systems trained from frame-level alignments can easily leverage posterior fusion to improve ASR accuracy and build a better single model with knowledge distillation. End-to-end ASR systems…

Computation and Language · Computer Science 2019-07-03 Gakuto Kurata , Kartik Audhkhasi

The recent emergence of joint CTC-Attention model shows significant improvement in automatic speech recognition (ASR). The improvement largely lies in the modeling of linguistic information by decoder. The decoder joint-optimized with an…

Computation and Language · Computer Science 2022-10-27 Xulong Zhang , Jianzong Wang , Ning Cheng , Mengyuan Zhao , Zhiyong Zhang , Jing Xiao

Siamese networks have shown effective results in unsupervised visual representation learning. These models are designed to learn an invariant representation of two augmentations for one input by maximizing their similarity. In this paper,…

Audio and Speech Processing · Electrical Eng. & Systems 2022-06-23 Yingying Gao , Junlan Feng , Tianrui Wang , Chao Deng , Shilei Zhang

End-to-end (E2E) models have gained attention in the research field of automatic speech recognition (ASR). Many E2E models proposed so far assume left-to-right autoregressive generation of an output token sequence except for connectionist…

Audio and Speech Processing · Electrical Eng. & Systems 2020-11-17 Yuya Fujita , Shinji Watanabe , Motoi Omachi , Xuankai Chan

The success of retrieval-augmented language models in various natural language processing (NLP) tasks has been constrained in automatic speech recognition (ASR) applications due to challenges in constructing fine-grained audio-text…

Sound · Computer Science 2024-02-06 Jiaming Zhou , Shiwan Zhao , Yaqi Liu , Wenjia Zeng , Yong Chen , Yong Qin

Mandarin-English code-switching (CS) is frequently used among East and Southeast Asian people. However, the intra-sentence language switching of the two very different languages makes recognizing CS speech challenging. Meanwhile, the recent…

Computation and Language · Computer Science 2021-10-05 Shun-Po Chuang , Heng-Jui Chang , Sung-Feng Huang , Hung-yi Lee

We present a state-of-the-art end-to-end Automatic Speech Recognition (ASR) model. We learn to listen and write characters with a joint Connectionist Temporal Classification (CTC) and attention-based encoder-decoder network. The encoder is…

Computation and Language · Computer Science 2017-06-12 Takaaki Hori , Shinji Watanabe , Yu Zhang , William Chan

Accurately finding the wrong words in the automatic speech recognition (ASR) hypothesis and recovering them well-founded is the goal of speech error correction. In this paper, we propose a non-autoregressive speech error correction method.…

Computation and Language · Computer Science 2024-07-19 Yuchun Shu , Bo Hu , Yifeng He , Hao Shi , Longbiao Wang , Jianwu Dang

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…

Computation and Language · Computer Science 2023-06-05 Dongji Gao , Matthew Wiesner , Hainan Xu , Leibny Paola Garcia , Daniel Povey , Sanjeev Khudanpur

Non-autoregressive (NAR) models have achieved a large inference computation reduction and comparable results with autoregressive (AR) models on various sequence to sequence tasks. However, there has been limited research aiming to explore…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-17 Pengcheng Guo , Xuankai Chang , Shinji Watanabe , Lei Xie

Multilingual models for Automatic Speech Recognition (ASR) are attractive as they have been shown to benefit from more training data, and better lend themselves to adaptation to under-resourced languages. However, initialisation from…

Audio and Speech Processing · Electrical Eng. & Systems 2018-01-24 Sibo Tong , Philip N. Garner , Hervé Bourlard

Language models play a central role in automatic speech recognition (ASR), yet most methods rely on text-only models unaware of ASR error patterns. Recently, large language models (LLMs) have been applied to ASR correction, but introduce…

Machine Learning · Computer Science 2026-03-18 Zijin Gu , Tatiana Likhomanenko , He Bai , Erik McDermott , Ronan Collobert , Navdeep Jaitly

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…

Sound · Computer Science 2018-11-02 Zhe Yuan , Zhuoran Lyu , Jiwei Li , Xi Zhou

Connectionist Temporal Classification (CTC) models are popular for their balance between speed and performance for Automatic Speech Recognition (ASR). However, these CTC models still struggle in other areas, such as personalization towards…

Computation and Language · Computer Science 2023-07-04 Devang Kulshreshtha , Saket Dingliwal , Brady Houston , Sravan Bodapati

Phonetic speech transcription is crucial for fine-grained linguistic analysis and downstream speech applications. While Connectionist Temporal Classification (CTC) is a widely used approach for such tasks due to its efficiency, it often…

We propose to utilize an instruction-tuned large language model (LLM) for guiding the text generation process in automatic speech recognition (ASR). Modern large language models (LLMs) are adept at performing various text generation tasks…

Audio and Speech Processing · Electrical Eng. & Systems 2025-01-08 Yosuke Higuchi , Tetsuji Ogawa , Tetsunori Kobayashi

We investigate the use of large language models (LLMs) as post-processing modules for automatic speech recognition (ASR), focusing on their ability to perform error correction for disordered speech. In particular, we propose…

Computation and Language · Computer Science 2025-09-30 Abner Hernandez , Tomás Arias Vergara , Andreas Maier , Paula Andrea Pérez-Toro

In end-to-end automatic speech recognition (ASR), a model is expected to implicitly learn representations suitable for recognizing a word-level sequence. However, the huge abstraction gap between input acoustic signals and output linguistic…

Audio and Speech Processing · Electrical Eng. & Systems 2022-02-09 Yosuke Higuchi , Keita Karube , Tetsuji Ogawa , Tetsunori Kobayashi