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Lucas Kwai Hong Lui and C. K. M. Lee
This research investigated a mathematical model of earphone design with principal component analysis. Along with simplifying the design problem, a predictive model for the sound quality indicators, namely, total harmonic distortion, power of output, rang...
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Silviu Ivascu, Florica Moldoveanu, Alin Moldoveanu, Anca Morar, Ana-Maria Tugulea and Victor Asavei
With the increase in the number of sensory substitution devices, the engineering community is confronted with a new challenge: ensuring user training in safe virtual environments before using these devices in real-life situations. We developed a game tha...
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Vaia Tsiokou, Louena Shtrepi, Elena Badino, Arianna Astolfi and Anna Karatza
Acoustic materials are widely used for improving interior acoustics based on their sound absorptive or sound diffusive properties. However, common acoustic materials only offer limited options for customizable geometrical features, performance, and aesth...
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Emma Arvidsson, Erling Nilsson, Delphine Bard Hagberg and Ola J. I. Karlsson
In ordinary public rooms absorbent ceilings are normally used. However, reflective material such as diffusers can also be useful to improve the acoustic performance for this type of environment. In this study, different combinations of absorbers and diff...
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Sang-Kwon Lee, Seungmin Lee, Jiseon Back and Taejin Shin
This paper presents a novel active noise cancellation (ANC) method to reduce the engine noise inside the cabin of a car. During the last three decades, many methods have been developed for the active control of a quasi-stationary narrowband sinusoidal si...
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Domingo Pardo-Quiles, Ignacio Rodríguez-Rodríguez and José-Víctor Rodríguez
The main goal of this research was to design and study the best structure, location, and shape of acoustic diffusers to be fitted on the ceilings of multipurpose auditoriums. Their absorbing properties can enhance the acoustics when installed on high cei...
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Kimihiro Sakagami, Midori Kusaka and Takeshi Okuzono
Recently, dotted-art MPPs have been proposed in which a designed pattern is made with the holes. In such a case, the MPP becomes heterogeneous in general. However, existing theories used for the prediction of the absorption characteristics of MPPs assume...
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Elia Arturo Vallicelli and Marcello De Matteis
This paper analyzes how to improve the precision of ionoacoustic proton range verification by optimizing the analog signal processing stages with particular emphasis on analog filters. The ionoacoustic technique allows one to spatially detect the proton ...
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Rossella Cottone, Louena Shtrepi, Valentina Serra and Simonetta Lucia Pagliolico
The agricultural activity of pruning olive trees generates waste which, due to long-standing practices and unawareness of the consequences, are burned on site, thereby producing CO2 emissions in the atmosphere. Therefore, in order to prevent environmenta...
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Constantin Popp and Damian T. Murphy
Room-scale virtual reality (VR) affordance in movement and interactivity causes new challenges in creating virtual acoustic environments for VR experiences. Such environments are typically constructed from virtual interactive objects that are accompanied...
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Nikolaos M. Papadakis and Georgios E. Stavroulakis
Noise barriers are a critical part of noise mitigation in urban and rural areas. In this study, a comparison of the insertion loss calculations of noise barriers via the Finite Element Method (FEM) and various formulae (Kurze?Anderson, ISO 9613-2/Tatge, ...
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Paulo Henrique Trombetta Zannin, Eriberto Oliveira Do Nascimento, Elaine Carvalho Da Paz and Felipe Do Valle
In the modern world, noise pollution continues to be a major problem that impairs people’s health, and road traffic is a primary contributor to noise emissions. This article describes an environmental impact study of the noise generated by the reco...
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Paulo Henrique Trombetta Zannin, Eriberto Oliveira Do Nascimento, Elaine Carvalho Da Paz and Felipe Do Valle
In the modern world, noise pollution continues to be a major problem that impairs people’s health, and road traffic is a primary contributor to noise emissions. This article describes an environmental impact study of the noise generated by the reco...
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Paulo Henrique Trombetta Zannin, Eriberto Oliveira Do Nascimento, Elaine Carvalho Da Paz and Felipe Do Valle
In the modern world, noise pollution continues to be a major problem that impairs people’s health, and road traffic is a primary contributor to noise emissions. This article describes an environmental impact study of the noise generated by the reco...
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Jinshun Hu, Yongshui Lin, Zhiwei Zhou, Xiaofei Cao, Qingjia Chi and Weiguo Wu
To further improve the low-frequency broadband sound absorption capability of the underwater anechoic layer (UAL) on the surface of marine equipment, a novel sound absorption structure with cavities (NSSC) is designed by adding resonators and honeycombs ...
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Daniel Deery, Lara Flanagan, Gordon O?Brien, Henry J. Rice and John Kennedy
Significant potential for acoustic metamaterials to provide a breakthrough in sound attenuation has been unlocked in recent times due to advancements in additive manufacturing techniques. These materials allow the targeting of specific frequencies for so...
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Ramani Ramakrishnan and Romain Dumoulin
A vacant unit, once used by a Portuguese Deli, was converted to a bar/music room in Toronto. The unit was divided into two spaces along its north-south axis. The western portion was designed as a music room that would provide a performance space from a s...
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Ramani Ramakrishnan and Romain Dumoulin
A vacant unit, once used by a Portuguese Deli, was converted to a bar/music room in Toronto. The unit was divided into two spaces along its north-south axis. The western portion was designed as a music room that would provide a performance space from a s...
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Sourabh Dogra and Arpan Gupta
Acoustic metamaterials are materials artificially engineered to control sound waves, which is not possible with conventional materials. We have proposed a design of an acoustic metamaterial plate with inbuilt Helmholtz resonators. The plate is made of Po...
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Nikos Barkas
The famous acoustics of ancient Greek theatres rely on a successful combination of appropriate location and architectural design. The theatres of the ancient world effectively combine two contradictory requirements: large audience capacity and excellent ...
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