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Virginia Sciacca, Giuseppe Morello, Laura Beranzoli, Davide Embriaco, Francesco Filiciotto, Giuditta Marinaro, Giorgio Maria Riccobene, Francesco Simeone and Salvatore Viola
The Mediterranean fin whale emits two types of 20-Hz calls, known as ?classic? and ?backbeat?, that can be produced in irregular series or in patterned sequences called songs. The analysis of songs is recognized as a meaningful approach to study baleen w...
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Tomomi Yamada, Kazunori Nozaki, Mikako Hayashi and Sonoko Kuwano
This study delves into the acoustic environment within dental clinics, particularly focusing on the impact of extraoral suction devices employed for infection control amid the COVID-19 pandemic. The research encompasses a comprehensive investigation, inc...
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Uri Kushnir and Vladimir Frid
Modern studies which dealt with the frequency domain analysis showed that a frequency-domain approach has an essential advantage and mentioned an inner qualitative relationship between the subsurface structure and its frequency spectra. This paper deals ...
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Zhiling Ouyang, Ze Liu, Yunfei Sun, Bing Yang and Yijun Hou
Based on horizontal velocity data recorded by a moored acoustic Doppler current profiler (ADCP) deployed on the southwestern continental slope of the East China Sea (ECS), this study investigates the characteristics of near-inertial waves (NIWs) induced ...
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Jianbin Li, Yi He, Qian Li and Zhen Zhang
The detection of bolt loosening using vibro-acoustic modulation (VAM) has been increasingly investigated in the past decade. However, conventional nonlinear coefficients, derived from theoretical analysis, are usually based on the assumption of ideal wav...
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Xidi Zhang, Zhihua Liu, Liushuai Cao and Decheng Wan
The occurrence of a tip leakage vortex (TLV) is a special phenomenon of ducted propellers, which has a significant influence on the propeller?s hydrodynamic performance and efficiency. The inception, evolution, and instability of the TLV under different ...
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Roman Varbanets, Oleksij Fomin, Václav Pí?tek, Valentyn Klymenko, Dmytro Minchev, Alexander Khrulev, Vitalii Zalozh and Pavel Kucera
The article presents the acoustic method of marine low-speed engine turbocharger parameter estimation under operating conditions when a prompt assessment of instantaneous turbocharger speed and rotor vibration level is required. The method lies in the an...
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Paul Nguyen Hong Duc, Dorian Cazau, Paul R. White, Odile Gérard, Joël Detcheverry, Frank Urtizberea and Olivier Adam
Visual observations of the marine biodiversity can be difficult in specific areas for different reasons, including weather conditions or a lack of observers. In such conditions, passive acoustics represents a potential alternative approach. The objective...
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Xinwei Luo, Minghong Zhang, Ting Liu, Ming Huang and Xiaogang Xu
This paper focuses on the automatic target recognition (ATR) method based on ship-radiated noise and proposes an underwater acoustic target recognition (UATR) method based on ResNet. In the proposed method, a multi-window spectral analysis (MWSA) method ...
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Sung-Woo Byun and Seok-Pil Lee
The goal of the human interface is to recognize the user?s emotional state precisely. In the speech emotion recognition study, the most important issue is the effective parallel use of the extraction of proper speech features and an appropriate classific...
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