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pro vyhledávání: '"TA365-367"'
Publikováno v:
Acta Acustica, Vol 8, p E1 (2024)
Externí odkaz:
https://doaj.org/article/e414fde37b6f45d69b23bd83cc0b20c7
Autor:
Pinhède Cédric, Boulandet Romain, Friot Emmanuel, Allado Mark R., Côté Renaud, Herzog Philippe
Publikováno v:
Acta Acustica, Vol 8, p 56 (2024)
Semi-anechoic rooms are used for the acoustic characterisation of noise sources. They involve heavy infrastructures and thick absorbent lining. The aim of this work is to demonstrate a less expensive alternative by complementing a thin passive coatin
Externí odkaz:
https://doaj.org/article/243d49389c354aeb8ee320f228fc3634
Autor:
Pike Xander, Cheer Jordan
Publikováno v:
Acta Acustica, Vol 8, p 51 (2024)
Advances in digital technologies have allowed for the development of complex active noise and vibration control solutions that have been utilised in a wide range of applications. Such control systems are commonly designed using linear filters, which
Externí odkaz:
https://doaj.org/article/273a6a0627924bae86ed43fcb189cd7b
Autor:
Lincke Dorothea, Pieren Reto
Publikováno v:
Acta Acustica, Vol 8, p 47 (2024)
Atmospheric turbulence causes well-audible fluctuations in sound amplitude as it propagates through the atmospheric boundary layer. However, the best currently available theoretical model describing amplitude fluctuations is limited to relatively sho
Externí odkaz:
https://doaj.org/article/299f533670d247ab9ddc102af1df0bc7
Publikováno v:
Acta Acustica, Vol 8, p 40 (2024)
In acoustics, field reconstruction methods aim at retrieving acoustic fields (pressure, velocity and intensity) from acoustic measurements around a radiating source, which is often a vibrating structure of complex shape (pumps, engines…). If they a
Externí odkaz:
https://doaj.org/article/cf70ce1ff46f4e94a43638c4e3e56303
Autor:
Vallely Sven, Schoenwald Stefan
Publikováno v:
Acta Acustica, Vol 8, p 52 (2024)
Cross-Laminated Timber (CLT) is a wood composite that is popular due to its favourable stiffness-to-mass-density ratio and environmental benefits, among other positive attributes. This paper presents the estimation of higher-order modal parameters an
Externí odkaz:
https://doaj.org/article/89ad0a1c5cc04eb09cef5c53babb09ff
Publikováno v:
Acta Acustica, Vol 8, p 53 (2024)
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. Recent st
Externí odkaz:
https://doaj.org/article/6f72071d2f1f4c1aa4f5ccf9d67dc1a5
Publikováno v:
Acta Acustica, Vol 8, p 55 (2024)
This paper describes a toy device, namely an electroacoustic clarinet, which was designed for educational purposes. It consists of a loudspeaker connected through a cavity to a duct drilled with several side holes. Unlike what happens in a clarinet w
Externí odkaz:
https://doaj.org/article/5800b46f90ef4eb98a0d5014e21f681a
Autor:
Nguyen Cong Truc, Li Dengke, Xiong Ziming, He Mu, Gautron Laurent, Duval Arnaud, Perrot Camille
Publikováno v:
Acta Acustica, Vol 8, p 54 (2024)
Melamine foam, categorized as an open-cell foam structure, absorbs sound through its three-dimensional network of thin struts. The pore size polydispersity within the open-cell melamine microstructure is evidenced from a top-down approach and confirm
Externí odkaz:
https://doaj.org/article/67cb5ee4f5bc4014b8f921ee37a56095
Publikováno v:
Acta Acustica, Vol 8, p 50 (2024)
Recent numerical studies showed that the foot of flue organ pipes closed at one end acts as a Helmholtz resonator and influences the acoustic oscillation in the pipe. Namely, the relative phase of oscillations between the pipe and foot changes depend
Externí odkaz:
https://doaj.org/article/a806154073f647ea82d8e4f23a84a0c7