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Vladimir Lavrov, Petr Moshkov and Dmitry Strelets
The results of in-flight experiments to determine the structure of the sound field in the cabin and pressure fluctuation fields on the surface of the fuselage of the RRJ-95NEW-100 prototype aircraft are presented here. Wall pressure fluctuation spectrums...
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Vadim Palchikovskiy, Igor Khramtsov and Oleg Kustov
This article considers the influence of the orifice arrangement in a cover of a cylindrical resonator on the impedance determined by the Dean?s method. A resonator with a small height and a low perforation degree is studied. This geometry provides differ...
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Kihyun Kim, Semyung Wang, Homin Ryu and Sung Q. Lee
This paper proposes a new method to estimate the position of an object and a silent person with a home security system using a loudspeaker and an array of microphones. The conventional acoustic-based security systems have been developed to detect intrude...
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Yoshiharu Soeta and Yoshisada Sakamoto
Sound environments in cars are becoming quieter and receiving attention because of the prevalence of low-noise engines such as hybrid and electric engines and the manifestation of automated driving. Although the car cabin has potential as a listening spa...
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Xiaoyun Zhang, Xiaoan Zhang, Jiangang Xu, Li Yang and Gao Song
In the actual operation of urban rail transit (URT), the vibrations of steel-spring floating-slab tracks (SSFSTs) are amplified, and the track structure has strong low-frequency acoustic radiation; therefore, it is necessary to study the acoustic radiati...
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Changsheng Chen, Guoping Li, Zhenlai Ma, Ziyi Mei, Bo Gao and Ning Zhang
Podded propulsors have become a focal point of research in the field of marine propulsion in recent years due to their high efficiency, low noise, and excellent maneuverability. To investigate the acoustic characteristics induced by the flow field of pod...
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Wen Chen, Kaijun Ren, Yongchui Zhang, Yuyao Liu, Yu Chen, Lina Ma and Silin Chen
The sound speed profile (SSP) is a necessary prerequisite for acoustic field computation and underwater target localization and monitoring. Due to the dynamic nature of the ocean, the reconstruction of SSPs with surface characteristics is a big challenge...
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Kaizhuang Yan, Yongxian Wang and Wenbin Xiao
The sound speed profile data of seawater provide an important basis for carrying out underwater acoustic modeling and analysis, sonar performance evaluation, and underwater acoustic assistant decision-making. The data volume of the high-resolution sound ...
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Giovanni Fasulo, Pasquale Vitiello, Luigi Federico and Roberto Citarella
The purpose of this work is to characterise the vibro-acoustic behaviour of rectangular flat panels reinforced by ?unconventional? stiffeners. Such panels are being increasingly employed in the aircraft industry in the case of composite fuselage, so that...
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Fengqin Zhu, Oleg E. Gulin and Igor O. Yaroshchuk
The results obtained in the present research show the complex nature of the propagation of sound signals and noise in the conditions of the shallow waters of the Arctic basin shelf. Despite the rather simple hydrology of the water column, a high degree o...
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Wladyslaw Marek Hamiga and Wojciech Bronislaw Ciesielka
Understanding local phenomena connected with airflow around road vehicles allows to reduce the negative impact of transportation on the environment. This paper presents using numerical tools for Computational Fluid Dynamics (CFD) and Computational AeroAc...
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Reza Alinaghian, Azizah Abd Rahman, Roliana Ibrahim
Pág. 2360 - 2371
Information and Communication Technology (ICT) policy is a code that clarifies the duties, responsibilities and rights of technology stakeholders and specifies acceptable and efficient ICT utilization. ICT policy is very fluid and rooted in a fast changi...
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Hongji Duan, Shuping Wang and Jiancheng Tao
Recent research shows that a directional quiet zone from near to far field can be created with a near-field microphone array. However, there is no systematic theoretical analysis of this error-sensing strategy. In this paper, an analytical model of the a...
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Xiaoxing Su, Jixing Qin and Xiangshuai Yu
This paper reports the interference pattern of an acoustic field in the 100?300 Hz frequency band observed in a shallow water experiment. Assuming there is a conventional fluid sea bottom, the observed interference pattern is first demonstrated to potent...
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Dana Utebayeva, Lyazzat Ilipbayeva and Eric T. Matson
The detection and classification of engine-based moving objects in restricted scenes from acoustic signals allow better Unmanned Aerial System (UAS)-specific intelligent systems and audio-based surveillance systems. Recurrent Neural Networks (RNNs) provi...
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Yuyao Liu, Zhou Meng, Wen Chen, Yan Liang, Wei Chen and Yu Chen
As one of the widespread physical phenomena in the global ocean system, the ocean front has a very important influence on underwater sound propagation. Firstly, this paper systematically reviews several methods for the detection of ocean fronts in the pa...
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Joseph Haxel, Xiaoqin Zang, Jayson Martinez, Brian Polagye, Garrett Staines, Zhiqun Daniel Deng, Martin Wosnik and Patrick O?Byrne
Acoustic emissions from current energy converters remain an environmental concern for regulators because of their potential effects on marine life and uncertainties about their effects stemming from a lack of sufficient observational data. Several recent...
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Rongxin Wang, Xiaomei Xu, Zheguang Zou, Longfei Huang and Yi Tao
Underwater sound generated by the rapidly increasing offshore wind farms worldwide greatly affects the underwater soundscape and may cause long-term cumulative effects on sound-sensitive marine organisms. However, its analysis and impact assessment are h...
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Antonella Bevilacqua and Lamberto Tronchin
The acoustical characteristics of a room where the artistic performance is presented to the audience have a critical impact on the experience of both artists and spectators. It is important to know how the original aspects and the refurbishment works thr...
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Francesco Martellotta, Stefania Liuzzi and Chiara Rubino
Rupestrian churches are spaces obtained from excavation of soft rocks that are frequently found in many Mediterranean countries. In the present paper the church dedicated to Saints Andrew and Procopius, located close to the city of Monopoli in Apulia (It...
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