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A major advantage of a deep convolutional neural network (CNN) is that the focused receptive field size is increased by stacking multiple convolutional layers. Accordingly, the model can explore the long-range dependency of features from…

Sound · Computer Science 2020-06-17 Xugang Lu , Peng Shen , Sheng Li , Yu Tsao , Hisashi Kawai

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

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

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

Speech dereverberation is an important stage in many speech technology applications. Recent work in this area has been dominated by deep neural network models. Temporal convolutional networks (TCNs) are deep learning models that have been…

Sound · Computer Science 2022-07-26 William Ravenscroft , Stefan Goetze , Thomas Hain

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

Deep learning is progressively gaining popularity as a viable alternative to i-vectors for speaker recognition. Promising results have been recently obtained with Convolutional Neural Networks (CNNs) when fed by raw speech samples directly.…

Audio and Speech Processing · Electrical Eng. & Systems 2019-08-12 Mirco Ravanelli , Yoshua Bengio

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…

Computation and Language · Computer Science 2017-02-02 Suyoun Kim , Takaaki Hori , Shinji Watanabe

Residual learning is a recently proposed learning framework to facilitate the training of very deep neural networks. Residual blocks or units are made of a set of stacked layers, where the inputs are added back to their outputs with the aim…

End-to-end automatic speech recognition systems have achieved great accuracy by using deeper and deeper models. However, the increased depth comes with a larger receptive field that can negatively impact model performance in streaming…

Audio and Speech Processing · Electrical Eng. & Systems 2021-07-23 Aleksei Kalinov , Somshubra Majumdar , Jagadeesh Balam , Boris Ginsburg

Deep convolutional neural networks (CNNs) have recently achieved great success for single image super-resolution (SISR) task due to their powerful feature representation capabilities. The most recent deep learning based SISR methods focus…

Image and Video Processing · Electrical Eng. & Systems 2020-09-11 Rao Muhammad Umer , Gian Luca Foresti , Christian Micheloni

Audio pattern recognition (APR) is an important research topic and can be applied to several fields related to our lives. Therefore, accurate and efficient APR systems need to be developed as they are useful in real applications. In this…

Sound · Computer Science 2022-07-21 Sergey Verbitskiy , Vladimir Berikov , Viacheslav Vyshegorodtsev

We introduce a class of convolutional neural networks (CNNs) that utilize recurrent neural networks (RNNs) as convolution filters. A convolution filter is typically implemented as a linear affine transformation followed by a non-linear…

Computation and Language · Computer Science 2018-08-29 Yi Yang

Attention-based methods and Connectionist Temporal Classification (CTC) network have been promising research directions for end-to-end (E2E) Automatic Speech Recognition (ASR). The joint CTC/Attention model has achieved great success by…

Audio and Speech Processing · Electrical Eng. & Systems 2019-10-22 Ruizhi Li , Xiaofei Wang , Sri Harish Mallidi , Shinji Watanabe , Takaaki Hori , Hynek Hermansky

We propose a novel method for Acoustic Event Detection (AED). In contrast to speech, sounds coming from acoustic events may be produced by a wide variety of sources. Furthermore, distinguishing them often requires analyzing an extended time…

Sound · Computer Science 2016-12-09 Naoya Takahashi , Michael Gygli , Beat Pfister , Luc Van Gool

Speech enhancement (SE) aims to reduce noise in speech signals. Most SE techniques focus only on addressing audio information. In this work, inspired by multimodal learning, which utilizes data from different modalities, and the recent…

Sound · Computer Science 2022-04-19 Jen-Cheng Hou , Syu-Siang Wang , Ying-Hui Lai , Yu Tsao , Hsiu-Wen Chang , Hsin-Min Wang

Speech enhancement (SE) aims to reduce noise in speech signals. Most SE techniques focus only on addressing audio information. In this work, inspired by multimodal learning, which utilizes data from different modalities, and the recent…

Sound · Computer Science 2018-01-25 Jen-Cheng Hou , Syu-Siang Wang , Ying-Hui Lai , Yu Tsao , Hsiu-Wen Chang , Hsin-Min Wang

Convolutional neural networks (CNNs) have been tremendously successful in solving imaging inverse problems. To understand their success, an effective strategy is to construct simpler and mathematically more tractable convolutional sparse…

Computer Vision and Pattern Recognition · Computer Science 2022-05-20 Tianlin Liu , Anadi Chaman , David Belius , Ivan Dokmanić

A deep learning approach has been widely applied in sequence modeling problems. In terms of automatic speech recognition (ASR), its performance has significantly been improved by increasing large speech corpus and deeper neural network.…

Computation and Language · Computer Science 2016-12-28 Zewang Zhang , Zheng Sun , Jiaqi Liu , Jingwen Chen , Zhao Huo , Xiao Zhang

Code-Switching (CS) remains a challenge for Automatic Speech Recognition (ASR), especially character-based models. With the combined choice of characters from multiple languages, the outcome from character-based models suffers from phoneme…

Audio and Speech Processing · Electrical Eng. & Systems 2021-06-24 Burin Naowarat , Thananchai Kongthaworn , Korrawe Karunratanakul , Sheng Hui Wu , Ekapol Chuangsuwanich