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Jose Cucharero, Tuomas Hänninen and Tapio Lokki
Sound-absorbing materials are usually measured in a reverberation chamber (diffuse field condition) or in an impedance tube (normal sound incidence). In this paper, we show how angle-dependent absorption coefficients could be measured in a factory-type s...
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Giuseppe Ciaburro
Parking is a crucial element in urban mobility management. The availability of parking areas makes it easier to use a service, determining its success. Proper parking management allows economic operators located nearby to increase their business revenue....
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Giuseppe Ciaburro, Gino Iannace, Virginia Puyana-Romero and Amelia Trematerra
Giant reeds represent a natural fiber widely available in some areas of the world. Its use can be particularly useful as the uncontrolled growth of giant reeds can be a problem because large areas are invaded by them and the crops are damaged. In this st...
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Jonghoek Kim
This paper introduces the localization method of an Autonomous Underwater Vehicle (AUV) in environments (such as harbors or ports) where there can be passing ships near the AUV. It is assumed that the AUV can access the trajectory and approximate source ...
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Nikolaos M. Papadakis and Georgios E. Stavroulakis
Alternative low-cost sources (e.g., balloons, gun fires) are used for impulse response measurements when a dodecahedron speaker is not available. This study sets to explore the applicability of a method utilizing a common directional loudspeaker as a sou...
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Nikolaos M. Papadakis and Georgios E. Stavroulakis
Handclap is a convenient and useful acoustic source. This study aimed to explore its optimal application and limitations for acoustic measurements as well for other possible utilizations. For this purpose, the following steps were performed: investigatio...
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Rick de Vos, Nikolaos M. Papadakis and Georgios E. Stavroulakis
A handclap is a convenient and easily available source for room acoustic measurements. If used correctly (e.g., application of optimal hand configuration) it can provide usable results for the measurement of acoustic parameters, within an expected deviat...
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Vadim Palchikovskiy, Aleksandr Kuznetsov, Igor Khramtsov and Oleg Kustov
A comparison is considered of the experimentally obtained impedance of locally reacting acoustic liner samples with the impedance calculated using semi-empirical Goodrich, Sobolev and Eversman models. The semi-empirical impedance models are outlined. In ...
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Alexandr Komkin, Aleksei Bykov and Olga Saulkina
Methods for measuring the acoustic characteristics of orifices have been reviewed. Comparison of three methods for evaluating of oscillation velocity in the neck of the Helmholtz resonator are presented. The first method is measurements in an impedance t...
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Hsiao Mun Lee, Heow Pueh Lee and Zhiyang Liu
The quality of the acoustic environments at Xi?an Jiatong-Liverpool University (XJTLU) and Soochow University (Dushuhu Campus, SUDC) in Suzhou City were investigated in the present work through real-time noise level measurements and questionnaire surveys...
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Gang Hu, Haiming Zhao and Zelin Li
A prediction model of the sound velocity and sound attenuation of underwater cobalt-rich crusts (CRCs) was established to solve the problem that it is difficult to predict the sound velocity in thickness measurements of cobalt-rich crusts. Based on Biot ...
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Nicolò Zuccherini Martello, Patrizio Fausti, Andrea Santoni and Simone Secchi
The problem of solar irradiation in building façades with large windows is often solved with the use of external shading devices, such as brise-soleil systems, but their potential acoustic effects on building façades are usually neglected. The purpose of...
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Dwaipayan Chakraborty and Subhashis Mallick
Ocean-water temperature and salinity are two vital properties that are required for weather-, climate-, and marine biology-related research. These properties are usually measured using disposable instruments at sparse locations, typically from tens to hu...
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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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Neil Spencer Bruce
This paper proposes the ?soundsit? as an alternative method to be used independently or in conjunction with current soundwalking methodological practice. The soundsit seeks to address the limits of the soundwalking method in relation to issues of transit...
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Rolf Bader and Niko Plath
The influence of internal damping on the vibration of a piano soundboard is investigated using a Finite-Difference Time Domain (FDTD) physical model and experimental measurements. The damping constant of the model is varied according to a range similar t...
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Renée P. Schoeman, Christine Erbe and Stephanie Plön
In 2014, the South African government launched ?Operation Phakisa? under which port developments play a significant role in supporting ocean economic growth. These developments will likely increase vessel traffic to and from South African ports, making i...
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Erik Nilsson, Nikolaos-Georgios Vardaxis, Sylvain Ménard and Delphine Bard Hagberg
Ventilation ducts can have a negative effect on the sound reduction index between two rooms if they pass through the dividing structure without treatments. The overall sound reduction of a ventilation duct is dependent on several factors including the tr...
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Luis Domenech, Víctor García-Peñas, Asta ?akalyte, Divya Puthukara Francis, Eskil Skoglund and Fernando Sánchez
Under droplet impingement, surface leading edge protection (LEP) coating materials for wind turbine blades develop high-rate transient pressure build-up and a subsequent relaxation in a range of strain rates. The stress-strain coating LEP behavior at a w...
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Kimihiro Sakagami, Fumiaki Satoh and Akira Omoto
Geo-referenced sound data are often used in the field of acoustics education to learn about the urban acoustic environment. Simple soundwalks and sound collections are also employed, in which acquiring additional information such as visual data, recorded...
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