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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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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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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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Abdulrazak Jinadu Otaru, Olalekan David Adeniyi, Ige Bori, Olufemi Ayodeji Olugboji and Joseph Obofoni Odigure
In recent decades, cellular metallic materials have increasingly been used for control of reverberation and cutback. These materials offer a unique combination of expanded pores, high specific surfaces, improved structural performance, low weight, corros...
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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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A-Hyeon Jo, Chan-Jae Park and Chan-Hoon Haan
Because speech recognition performance is significantly lower at the age of nine or younger, the acoustic performance standards of classrooms for young children should be investigated. This study derives the appropriate reverberation time for lower-grade...
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Grazia Piccirillo, Nicole Viola, Roberta Fusaro and Luigi Federico
One of the most critical regulatory issues related to supersonic flight arises from limitations imposed by community noise acceptability. The most efficient way to ensure that future supersonic aircraft will meet low-noise requirements is the verificatio...
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Ali Haider Adeeb and Zühre Sü Gül
This study investigates the indoor acoustical characteristics of a Middle Byzantine masonry church in Cappadocia. The Bell Church is in partial ruins; therefore, archival data and the church?s remains are used for its acoustical reconstruction. The study...
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Yaw-Shyan Tsay, Jui-Yen Lin and Faxin Ma
The bass ratio describes the relationship between the reverberation energy in the low frequency region and that of the middle frequency. An appropriate bass ratio can create a warm sound; however, too much bass can influence speech clarity (C50) and work...
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Osman Gencel, Aliakbar Gholampour, Hayrettin Tokay and Togay Ozbakkaloglu
Increasing the thermal insulation of building components to reduce the thermal energy loss of buildings has received significant attention. Owing to its porous structure, using expanded vermiculite as an alternative to natural river sand in the developme...
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