Results 301 to 310 of about 1,550,252 (358)
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Building Acoustics, 2023
ETFE cushions are used as cladding in predominantly mid to large size architectural projects. Smaller cushions are about 10 m2 in size and the biggest single cushions can be several hundreds of square metres large.
Yannick Sluyts +3 more
semanticscholar +1 more source
ETFE cushions are used as cladding in predominantly mid to large size architectural projects. Smaller cushions are about 10 m2 in size and the biggest single cushions can be several hundreds of square metres large.
Yannick Sluyts +3 more
semanticscholar +1 more source
Applied Physics Letters, 2022
Achieving broadband sound absorption in two-port open ducts is of fundamental importance in the acoustics, with wide applications ranging from noise control to duct sound mitigation.
Yong-xin Gao +4 more
semanticscholar +1 more source
Achieving broadband sound absorption in two-port open ducts is of fundamental importance in the acoustics, with wide applications ranging from noise control to duct sound mitigation.
Yong-xin Gao +4 more
semanticscholar +1 more source
Subwavelength acoustic metamaterial with tunable acoustic absorption
The Journal of the Acoustical Society of America, 2015We present numerical simulations and experimental measurements for ultrasonic transmission through a subwavelength metamaterial consisting of an array of hollow cylinders embedded in a soft elastic matrix. The mechanical properties of the matrix, the lattice constant, and the size of the cylinders are optimized in order to maximize sound absorption in ...
Nicolas Viard +3 more
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Effect of the finishing on the sound absorption characteristic of a mineral wool
2023 Immersive and 3D Audio: from Architecture to Automotive (I3DA), 2023Sometimes, mineral wool cannot be used ’as it is’ for civil applications but needs some type of finishing. In this work, a test case is analysed where a mineral wool ceiling was finished using a paint suggested by the company producing the material.
E. Piana, Andrea Breviario
semanticscholar +1 more source
Acoustic Impedance and Sound Absorption
The Journal of the Acoustical Society of America, 1940Theoretical curves for acoustic impedance vs. frequency, obtained by solving the equation for wave motion within the material, are compared with recently measured values of the impedance of various sound absorbing materials. The satisfactory agreement in most cases measured indicates that that for homogeneous materials the effective values of flow ...
Richard L. Brown +2 more
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Optimization of the acoustical absorption characteristics of an enclosure
Applied Acoustics, 1999Abstract A method for optimizing the acoustic absorption of a hall characterized by a wide variety of possible constraints is presented. The method is formulated so that it is possible to obtain a total optimum solution directly and efficiently. The method described in the paper is clearly more effective and accurate than the usual ones which are ...
CAPPELLI, Maria, FONTANA, Donato Maria
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Acoustic Absorption in Sand and Soil
The Journal of the Acoustical Society of America, 1948The acoustic absorption properties of sand and soil with varying amounts of water, ranging from dry to saturated, have been investigated. In most of the work the frequency range was 10–30 kc, although data were obtained at as high as 150 kc. Two methods were used.
W. L. Nyborg, I. Rudnick
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Acoustic absorptivity of direct acoustic rate feedback control
The Journal of the Acoustical Society of America, 1995The fixed-gain feedback methods often provide the only means of limiting transient noise and excessive sound pressures due to unmeasurable, incoherent disturbances. The use of direct acoustic rate feedback (DARFB) to control an enclosure’s reverberant energy has the benefit over other feedback methods of larger stability margins and improved stability ...
William R. Saunders, Daniel G. Cole
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Foam acoustic absorption member
The Journal of the Acoustical Society of America, 1988A foam acoustic absorption member having a stabilizing layer with perforations and, in order to obtain a simple, stable structural shape of homogeneous resistance to flow, the stabilizing layer (2) is a wide-side wall of a hollow body (K) which wall is pressed, under thermal deformation, against the foam layer (1), the openings in said hollow body ...
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Acoustic absorption properties of materials
Construction and Building Materials, 1988Abstract The sound absorption characteristics of some 30 different but easily available sound absorbing materials have been studied previously. Presented here in brief are a selection of these materials, their description, methodology used and results obtained.
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