Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Carlos de la Colina"'
Publikováno v:
Noise Control Engineering Journal. 69:341-350
Microperforated panels (MPPs) are recognized as suitable absorbers for noise control applications demanding special clean and health requirements. While it is relatively easy to design single-layer MPPs for sound absorption in one-to-two octave bands
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::04c794d90169ba5b723a2f9cb46880b4
https://doi.org/10.3397/1/376931
https://doi.org/10.3397/1/376931
Publikováno v:
Acta Acustica, Vol 5, p 34 (2021)
Tinnitus is an auditory disorder very difficult to treat. Whereas up until now there is not a “cure” for tinnitus, the most extended treatment combines counselling with sound therapy. When this sound is a broadband noise in the audio frequency ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1dfc7de410844e4ac8f6631e0238c220
https://doi.org/10.1051/aacus/2021028
https://doi.org/10.1051/aacus/2021028
Publikováno v:
Applied Acoustics. 159:107118
Microslit panel absorbers are panels where the microperforations are slits instead of circular holes. Specific models have been proposed for such absorbers that provide the input impedance as a function of four non-acoustical parameters, namely d, th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bf4bdd08035a14242f1f60c91f1a848
https://doi.org/10.1016/j.apacoust.2019.107118
https://doi.org/10.1016/j.apacoust.2019.107118
Publikováno v:
Composite Structures. 226:111226
Microperforated panels are light, clean and tunable sound absorbers, which fundamentals were already established in the previous century. They consist of a distribution of minute holes of diameter d on a panel of thickness t with perforation ratio ϕ
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::77f437f18372c08a1971f04c4418d4bc
https://doi.org/10.1016/j.compstruct.2019.111226
https://doi.org/10.1016/j.compstruct.2019.111226
Publikováno v:
Applied Acoustics. 74:561-565
A point source for measuring ground impedance which complies with the omnidirectionality requirements of the ANSI S1.18 standard is presented. The source consists of a small aperture connected to a conventional loudspeaker through a cone. Whilst this
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8ccb008072eb5ba7fbf669e43d6a8d6
https://doi.org/10.1016/j.apacoust.2012.10.003
https://doi.org/10.1016/j.apacoust.2012.10.003
Publikováno v:
Proceedings of Meetings on Acoustics.
Recent trends in broadband noise reduction have considered the design of bio-inspired multi-layer sound absorbers. In particular, the silent flight of certain species of night bird predators can offer an inspiration for the design of acoustic partiti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea8705a5a6f1725c76c78519d01aa821
https://doi.org/10.1121/2.0000566
https://doi.org/10.1121/2.0000566
Publikováno v:
Proceedings of Meetings on Acoustics.
Turbulent Boundary Layer (TBL) induced noise is one of the dominant noise sources in modern aircraft. The aim of this work is to study the behavior of insulating partitions composed of Micro-Perforated Panels (MPPs) exposed to a TBL excitation. We ha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b51cf410e0b7a0eafab2fcb9a506c5d
https://doi.org/10.1121/2.0000347
https://doi.org/10.1121/2.0000347
Publikováno v:
The Journal of the Acoustical Society of America. 141:3872-3872
Recent trends in broadband noise reduction have considered the design of bio-inspired multi-layer sound absorbers. The layout usually comprises a suitable combination of thin micro-perforates, fibrous materials and airspaces with a view to mimic the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::22df0945a77ef07a972bca394b185b89
https://doi.org/10.1121/1.4988657
https://doi.org/10.1121/1.4988657
Publikováno v:
Applied Acoustics. 36:1-17
This paper deals with the assessment of the factors involved in sound-attenuation characteristics of ear muffs. To this end, the most common methods (subjective, objective on people, and objective on a test fixture), under free and pseudo-diffuse fie
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d608366ce5a3d8a4acb7225e59164a90
https://doi.org/10.1016/0003-682x(92)90070-9
https://doi.org/10.1016/0003-682x(92)90070-9
Publikováno v:
The Journal of the Acoustical Society of America. 105:1316-1316
The absorption curve, in function of the frequency, in hard‐backed layers of granular materials, shows undesirable series of maxima and minima related to the layer deep. In order to increase the efficiency of these absorbing materials, it is necess
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c7239eb4facd1eb20e5322b2a95bebd2
https://doi.org/10.1121/1.424528
https://doi.org/10.1121/1.424528