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Related papers: Self-Speculative Decoding for LLM-based ASR with C…

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This paper investigates the impact of word-based RNN language models (RNN-LMs) on the performance of end-to-end automatic speech recognition (ASR). In our prior work, we have proposed a multi-level LM, in which character-based and…

Computation and Language · Computer Science 2018-08-09 Takaaki Hori , Jaejin Cho , Shinji Watanabe

Recent techniques such as retrieval-augmented generation or chain-of-thought reasoning have led to longer contexts and increased inference costs. Context compression techniques can reduce these costs, but the most effective approaches…

Computation and Language · Computer Science 2025-10-24 Hippolyte Pilchen , Edouard Grave , Patrick Pérez

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…

Computation and Language · Computer Science 2022-10-12 Brian Yan , Siddharth Dalmia , Yosuke Higuchi , Graham Neubig , Florian Metze , Alan W Black , Shinji Watanabe

Multilingual Automatic Speech Recognition (ASR) models have extended the usability of speech technologies to a wide variety of languages. With how many languages these models have to handle, however, a key to understanding their imbalanced…

Computation and Language · Computer Science 2023-02-28 William Chen , Brian Yan , Jiatong Shi , Yifan Peng , Soumi Maiti , Shinji Watanabe

Integrating large language models (LLMs) into automatic speech recognition (ASR) has become a dominant paradigm. Although recent LLM-based ASR models have shown promising performance on public benchmarks, it remains challenging to balance…

Audio and Speech Processing · Electrical Eng. & Systems 2026-04-10 Yuan Xie , Jiaqi Song , Guang Qiu , Xianliang Wang , Ming Lei , Jie Gao , Jie Wu

Speculative Decoding (SD) is a recently proposed technique for faster inference using Large Language Models (LLMs). SD operates by using a smaller draft LLM for autoregressively generating a sequence of tokens and a larger target LLM for…

Machine Learning · Computer Science 2025-07-09 Meiyu Zhong , Noel Teku , Ravi Tandon

Large Language Models (LLMs) are strong decoders for Serialized Output Training (SOT) in two-talker Automatic Speech Recognition (ASR), yet their performance degrades substantially in challenging conditions such as three-talker mixtures. A…

Sound · Computer Science 2026-03-31 Hao Shi , Yuan Gao , Xugang Lu , Tatsuya Kawahara

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,…

Audio and Speech Processing · Electrical Eng. & Systems 2019-07-02 Julian Salazar , Katrin Kirchhoff , Zhiheng Huang

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…

Audio and Speech Processing · Electrical Eng. & Systems 2025-02-17 Zengwei Yao , Wei Kang , Xiaoyu Yang , Fangjun Kuang , Liyong Guo , Han Zhu , Zengrui Jin , Zhaoqing Li , Long Lin , Daniel Povey

Self-speculative decoding is an inference technique for large language models designed to speed up generation without sacrificing output quality. It combines fast, approximate decoding using a compact version of the model as a draft model…

Machine Learning · Computer Science 2026-04-17 Walaa Amer , Uday das , Fadi Kurdahi

The Connectionist Temporal Classification (CTC) has achieved great success in sequence to sequence analysis tasks such as automatic speech recognition (ASR) and scene text recognition (STR). These applications can use the CTC objective…

Signal Processing · Electrical Eng. & Systems 2019-09-09 Siyuan Lu , Jinming Lu , Jun Lin , Zhongfeng Wang

End-to-end automatic speech recognition (ASR) systems based on transformer architectures, such as Whisper, offer high transcription accuracy and robustness. However, their autoregressive decoding is computationally expensive, hence limiting…

Computation and Language · Computer Science 2025-07-30 Tuan Vu Ho , Hiroaki Kokubo , Masaaki Yamamoto , Yohei Kawaguchi

While integrating speech encoder with LLM requires substantial data and resources, use cases face limitations due to insufficient availability. To address this, we propose a solution with a parameter-efficient adapter that converts speech…

Computation and Language · Computer Science 2025-09-08 Jaekwon Yoo , Kunal Chandiramani , Divya Tadimeti , Abenezer Girma , Chandra Dhir

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…

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

Self-supervised pretraining for Automated Speech Recognition (ASR) has shown varied degrees of success. In this paper, we propose to jointly learn representations during pretraining from two different modalities: speech and text. The…

Computation and Language · Computer Science 2021-08-30 Zhehuai Chen , Yu Zhang , Andrew Rosenberg , Bhuvana Ramabhadran , Gary Wang , Pedro Moreno

End-to-end ASR models trained on large amount of data tend to be implicitly biased towards language semantics of the training data. Internal language model estimation (ILME) has been proposed to mitigate this bias for autoregressive models…

Audio and Speech Processing · Electrical Eng. & Systems 2023-05-09 Nilaksh Das , Monica Sunkara , Sravan Bodapati , Jinglun Cai , Devang Kulshreshtha , Jeff Farris , Katrin Kirchhoff

In the present paper, an attempt is made to combine Mask-CTC and the triggered attention mechanism to construct a streaming end-to-end automatic speech recognition (ASR) system that provides high performance with low latency. The triggered…

Sound · Computer Science 2021-10-22 Huaibo Zhao , Yosuke Higuchi , Tetsuji Ogawa , Tetsunori Kobayashi

While Transformers have achieved promising results in end-to-end (E2E) automatic speech recognition (ASR), their autoregressive (AR) structure becomes a bottleneck for speeding up the decoding process. For real-world deployment, ASR systems…

Audio and Speech Processing · Electrical Eng. & Systems 2022-01-27 Keqi Deng , Zehui Yang , Shinji Watanabe , Yosuke Higuchi , Gaofeng Cheng , Pengyuan Zhang

The recently proposed Conformer architecture has shown state-of-the-art performances in Automatic Speech Recognition by combining convolution with attention to model both local and global dependencies. In this paper, we study how to reduce…

Audio and Speech Processing · Electrical Eng. & Systems 2021-09-09 Maxime Burchi , Valentin Vielzeuf