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Application of an auditory steady-state response test to evaluate the attenuation of hearing protection devices
(2014)
This research aims to present a new method to get real attenuation of hearing protection devices, with good reproducibility and a small standard deviation, without relying on skills and cooperation individual. Thus the ...
Análise de performance de um enclausuramento por meio de medição de potência sonora em câmara reverberante
(Universidade Federal de Santa MariaBrasilUFSMCentro de Tecnologia, 2023-03-21)
This paper presents the design, construction and evaluation of an acoustic enclosure, which was used as basis for the study of the sound insulation caused by these devices. An acoustic enclosure is a passive noise control ...
Analysis of sound propagation for outdoor emergency speakers networks
(2016 IEEE ANDESCON, 2017)
Abstract:In this work we show the results of analysis of propagation of sound waves applied for an alert system in the river Chili, in Arequipa city. We used mathematical models, ISO standards, geographical, demographical ...
Measurement of Wave Attenuation in Buried Plastic Water Distribution Pipes
(Assoc Mechanical Engineers Technicians Slovenia, 2014-05-01)
Leaks in pipes are a common issue encountered in the water industry. Acoustic methods are generally successful in finding and locating leaks in metallic pipes, however, they are less effective when applied to plastic pipes. ...
On the attenuation of vibration using a finite periodic array of rods comprised of either symmetric or asymmetric cells
(2021-10-27)
Periodic structures have an important role to play in the reduction of vibration within a targeted frequency range. Much of the literature concerning vibrations in periodic structures involves the description of wave ...
Frog call intensities and sound propagation in the South American temperate forest region
(1998)
Sound pressure levels and the spectral structure of the advertisement calls of five species of frogs from the South American temperate austral forest were analyzed. Males of Eupsophus emiliopugini, Batrachyla antartandica ...
Impact of sound attenuation on ultrasound-driven yield improvements during olive oil extraction.
(Elsevier, 2019)
High frequency ultrasound can enhance olive oil extractability industrially. However, the ultrasound attenuation phenomena and their implications on extractability, are not well understood. This work aims at evaluating the ...