Results 41 to 50 of about 93,360 (165)

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Applied Sciences, 2019
An omnidirectional source is required in many acoustic measurements. Commonly a dodecahedron speaker is used but due to various factors (e.g., high cost, transportation difficulties) other acoustic sources are sometimes preferred. In this review, fifteen
Nikolaos M. Papadakis, Georgios E. Stavroulakis   +1 more
doaj   +1 more source

Handclap for Acoustic Measurements: Optimal Application and Limitations

Acoustics, 2020
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.
Nikolaos M. Papadakis, Georgios E. Stavroulakis   +1 more
doaj   +1 more source

Music and Storytelling at Rock Art Sites? The Archaeoacoustics of the Urkosh Area (Russian Altai)

Open Archaeology, 2023
In this article, the potential of archaeoacoustics for understanding past communities is discussed by looking at a range of acoustic parameters. Our case study is the Urkosh rock art area in the Ongudai district, Republic of Altai (Russia).
Díaz-Andreu Margarita, Rozwadowski Andrzej, Pasalodos Raquel Jiménez, Santos da Rosa Neemias, Benítez-Aragón Daniel, Alvarez-Morales Lidia   +5 more
doaj   +1 more source

Intangible Mosaic of Sacred Soundscapes in Medieval Serbia

Acoustics, 2022
Religious practice in Serbia has taken place using both indoors and outdoors sacred sites ever since the adoption of Christianity in medieval times. However, previous archaeoacoustic research was focused on historic church acoustics, excluding the open ...
Zorana Đorđević, Dragan Novković, Marija Dragišić   +2 more
doaj   +1 more source

Large-Scale Experiments to Improve Monopile Scour Protection Design Adapted to Climate Change—The PROTEUS Project

Energies, 2019
This study aims to improve the design of scour protection around offshore wind turbine monopiles, as well as future-proofing them against the impacts of climate change.
Carlos Emilio Arboleda Chavez, Vasiliki Stratigaki, Minghao Wu, Peter Troch, Alexander Schendel, Mario Welzel, Raúl Villanueva, Torsten Schlurmann, Leen De Vos, Dogan Kisacik, Francisco Taveira Pinto, Tiago Fazeres-Ferradosa, Paulo Rosa Santos, Leen Baelus, Viktoria Szengel, Annelies Bolle, Richard Whitehouse, David Todd   +17 more
doaj   +1 more source

Affordable wide-band measurement ecosystem for musical acoustics based on electro-dynamic transducers

Acta Acustica
The variability in responses of acoustic instruments can be attributed to a combination of fluctuations in critical parameters of wood, such as density, stiffness, and strength, and design features such as body shapes or bracing geometries.
Ausiello Ludovico, Ducceschi Michele, Duran Sebastian, Morrison Benjamin   +3 more
doaj   +1 more source

Measurements of Normal Incidence Reflection Loss as a Function of Temperature at the Water-Castor Oil Interface

Sensors, 2019
Reflection loss at the water-castor oil interface as a function of temperature was measured in a direction normal to the interface using a 200-kHz acoustic signal.
Dong-Gyun Han, Him-Chan Seo, Sungho Cho, Jee Woong Choi   +3 more
doaj   +1 more source

Design of Acoustic Signals for a Seal Deterrent Device

Electrical, Control and Communication Engineering, 2020
During the past decade, attacks by grey seals on fishing nets in the Baltic Sea have caused considerable loss of fish catch and damage to fishing gears.
Aboltins Arturs, Grizans Juris, Pikulins Dmitrijs, Terauds Maris, Zeltins Maris   +4 more
doaj   +1 more source

Research for the Presence of Unmanned Aerial Vehicle inside Closed Environments with Acoustic Measurements

Buildings, 2020
Small UAVs (unmanned aerial vehicle) can be used in many sectors such as the acquisition of images or the transport of objects. Small UAVs have also been used for terrorist activities or to disturb the flight of airplanes.
Giuseppe Ciaburro, Gino Iannace, Amelia Trematerra   +2 more
doaj   +1 more source

Determination of the Probability Distribution of the Mean Sound Level

Archives of Acoustics, 2013
Assessment of several noise indicators are determined by the logarithmic mean Lmean=Sn10log((1/n)Σi=1n 100.1Li), from the sum of independent random results L1, L2, ..., Ln of the sound level, being under testing.
Wojciech BATKO, Bartosz PRZYSUCHA
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