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2. Extending Audio Masked Autoencoders Toward Audio Restoration

Author

Zhong, Zhi, Shi, Hao, Hirano, Masato, Shimada, Kazuki, Tateishi, Kazuya, Shibuya, Takashi, Takahashi, Shusuke, and Mitsufuji, Yuki

Subjects
Computer Science - Sound, Electrical Engineering and Systems Science - Audio and Speech Processing
Abstract

Audio classification and restoration are among major downstream tasks in audio signal processing. However, restoration derives less of a benefit from pretrained models compared to the overwhelming success of pretrained models in classification tasks. Due to such unbalanced benefits, there has been rising interest in how to improve the performance of pretrained models for restoration tasks, e.g., speech enhancement (SE). Previous works have shown that the features extracted by pretrained audio encoders are effective for SE tasks, but these speech-specialized encoder-only models usually require extra decoders to become compatible with SE, and involve complicated pretraining procedures or complex data augmentation. Therefore, in pursuit of a universal audio model, the audio masked autoencoder (MAE) whose backbone is the autoencoder of Vision Transformers (ViT-AE), is extended from audio classification to SE, a representative restoration task with well-established evaluation standards. ViT-AE learns to restore masked audio signal via a mel-to-mel mapping during pretraining, which is similar to restoration tasks like SE. We propose variations of ViT-AE for a better SE performance, where the mel-to-mel variations yield high scores in non-intrusive metrics and the STFT-oriented variation is effective at intrusive metrics such as PESQ. Different variations can be used in accordance with the scenarios. Comprehensive evaluations reveal that MAE pretraining is beneficial to SE tasks and help the ViT-AE to better generalize to out-of-domain distortions. We further found that large-scale noisy data of general audio sources, rather than clean speech, is sufficiently effective for pretraining., Comment: WASPAA 2023.Copyright 2023 IEEE.Personal use of this material is permitted.Permission from IEEE must be obtained for all other uses,in any current or future media,including reprinting/republishing this material for advertising or promotional purposes, creating new collective works,for resale or redistribution to servers or lists,or reuse of any copyrighted component of this work in other works

Published
2023

3. An Attention-based Approach to Hierarchical Multi-label Music Instrument Classification

Author

Zhong, Zhi, Hirano, Masato, Shimada, Kazuki, Tateishi, Kazuya, Takahashi, Shusuke, and Mitsufuji, Yuki

Subjects
Computer Science - Sound, Electrical Engineering and Systems Science - Audio and Speech Processing
Abstract

Although music is typically multi-label, many works have studied hierarchical music tagging with simplified settings such as single-label data. Moreover, there lacks a framework to describe various joint training methods under the multi-label setting. In order to discuss the above topics, we introduce hierarchical multi-label music instrument classification task. The task provides a realistic setting where multi-instrument real music data is assumed. Various hierarchical methods that jointly train a DNN are summarized and explored in the context of the fusion of deep learning and conventional techniques. For the effective joint training in the multi-label setting, we propose two methods to model the connection between fine- and coarse-level tags, where one uses rule-based grouped max-pooling, the other one uses the attention mechanism obtained in a data-driven manner. Our evaluation reveals that the proposed methods have advantages over the method without joint training. In addition, the decision procedure within the proposed methods can be interpreted by visualizing attention maps or referring to fixed rules., Comment: To appear at ICASSP 2023

Published
2023

21. Intraplaque haemorrhage, coronary spasm, and resuscitated cardiac arrest in patients with non-obstructive coronary artery disease.

Author

Nishi, Takeshi, Kume, Teruyoshi, Saito, Yuichi, Kato, Ken, Tateishi, Kazuya, Yamada, Ryotaro, Kitahara, Hideki, Neishi, Yoji, Kobayashi, Yoshio, and Uemura, Shiro

Subjects
CORONARY vasospasm, CORONARY artery bypass, ACUTE coronary syndrome, RETURN of spontaneous circulation, INTRAVASCULAR ultrasonography, CORONARY artery disease, ATHEROSCLEROTIC plaque, CHEST pain
Abstract

This article discusses the potential role of intraplaque hemorrhage (IPH) and coronary spasm in sudden cardiac arrest (SCA) patients with non-obstructive coronary artery disease (CAD). The study included 23 SCA patients who underwent emergency/urgent coronary angiography (CAG) and intracoronary optical coherence tomography (OCT) to evaluate non-occlusive coronary lesions. The results showed that IPH was frequently observed in patients without occlusive coronary lesions, often accompanied by coronary spasms. The study suggests that the interaction between IPH and coronary spasm may contribute to the pathogenesis of SCA. However, the study has limitations, including a small sample size and the absence of a control group. Further research is needed to fully understand the relationship between IPH, coronary spasm, and SCA. [Extracted from the article]

Published
2024
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35. Impact of Number of Defibrillation Attempts on Neurologically Favourable Survival Rate in Patients with Out-of-Hospital Cardiac Arrest

Author

Tateishi, Kazuya, primary, Saito, Yuichi, additional, Kitahara, Hideki, additional, Shiko, Yuki, additional, Kawasaki, Yohei, additional, Nonogi, Hiroshi, additional, Tahara, Yoshio, additional, Yonemoto, Naohiro, additional, Nagao, Ken, additional, Ikeda, Takanori, additional, Sato, Naoki, additional, and Kobayashi, Yoshio, additional

Published
2023
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43. Interesting images delayed aortic valve perforation caused by blunt trauma

Author

Tateishi, Kazuya, Y. Asselin, Chantal, M. Elmann, Elie, and De Gregorio, Joseph

Subjects
42 Health sciences, blunt chest trauma, delayed onset, Health sciences, FOS: Health sciences, aortic regurgitation
Abstract

Traumatic aortic regurgitation (AR) is a rare complication of blunt chest trauma. We described the case of a 35-year-old male who presented to our hospital with shortness of breath 7 years after sustaining blunt chest trauma associated with a motorcycle accident. Transthoracic and transesophageal echocardiogram detected severe AR with two separate jets. The patient was diagnosed with congestive heart failure due to severe AR, and surgical aortic valve replacement was performed. A large perforation of the right coronary cusp likely sustained during the initial blunt chest trauma injury was confirmed surgically. As AR caused by blunt chest trauma can gradually worsen, it is necessary to confirm if there is a history of trauma in patients with severe AR of unknown origin.

Published
2023
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44. Implantable cardioverter-defibrillator therapy after resuscitation from cardiac arrest in vasospastic angina: A retrospective study

Author

Tateishi, Kazuya, primary, Kondo, Yusuke, additional, Saito, Yuichi, additional, Kitahara, Hideki, additional, Fukushima, Kenichi, additional, Takahashi, Hidehisa, additional, Yamashita, Daichi, additional, Ohashi, Koichi, additional, Suzuki, Ko, additional, Hashimoto, Osamu, additional, Sakai, Yoshiaki, additional, and Kobayashi, Yoshio, additional

Published
2022
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49. Extent of lipid core plaque in patients with Achilles tendon xanthoma undergoing percutaneous coronary intervention for coronary artery disease

Author

Kitahara, Hideki, primary, Yamazaki, Tatsuro, additional, Hiraga, Takashi, additional, Yamashita, Daichi, additional, Matsumoto, Tadahiro, additional, Kobayashi, Takahiro, additional, Sato, Takanori, additional, Suzuki, Masahiro, additional, Saito, Kan, additional, Matsuoka, Takaaki, additional, Mori, Naoto, additional, Tateishi, Kazuya, additional, Fujimoto, Yoshihide, additional, and Kobayashi, Yoshio, additional

Published
2022
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