Results 111 to 120 of about 117,140 (175)
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Broadband Response Diaphragm Materials for Human Acoustics Engineering
SmallAbstract High‐performance fiber‐reinforced composite materials demonstrate great potential for manufacturing diaphragms in human‐engineered acoustic loudspeakers. However, the notable scarcity of high‐quality fibers and the uncontrollable nature of the diaphragm structure limit the production of high‐quality sound
Gang Chen
exaly +3 more sources
Robust Diaphragm For An Acoustic Device
The Journal of the Acoustical Society of America, 2011A rigid, flat plate diaphragm for an acoustic device is illustrated. The internal supporting structure of the diaphragm provides a combination of torsional and translational stiffeners, which resemble a number of crossbars. These stiffeners brace and support the diaphragm motion, thus causing its response to not be adversely affected by fabrication ...
Ronald N. Miles, Weili Cui
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Flame-retarded acoustic diaphragm
The Journal of the Acoustical Society of America, 1985A flame-retarded speaker diaphragm is prepared by making a cone from cellulose fibers, impregnating the cellulosic cone with a solution of a trimethylol melamine monomer, an organic phosphorus- and nitrogen-containing compound, and a trialkyl amine catalyst in an alcohol solvent, and heating the impregnated cone until the solvent is removed and the ...
Fumio Kawahara +2 more
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Diaphragm material for acoustical transducer
The Journal of the Acoustical Society of America, 1987ABSTRACT OF THE DISCLOSURE An improved diaphragm material for use with an acoustical transducer, such as a moving-coil electrodynamic loudspeaker and a loud speaker containing such diaphragm, which diaphragm comprises a formed, self-supporting, woven carbon fiber cloth material optionally having a thin air sealing plastic coating thereon, the diaphragm
Louis Melilo, Tsutomu Haga, Iwao Sashida
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Acoustic transducer with honeycomb diaphragm
The Journal of the Acoustical Society of America, 1985An acoustic transducer having a honeycomb-type diaphragm material, which transducer comprises a piezoelectric element and a driving element supported within a housing frame and acoustically attached by a coupling means to a honeycomb-type diaphragm, flat sheet material having a high stiffness-to-weight ratio, to provide an acoustic transducer having an
Louis Melillo +2 more
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Diaphragm for acoustic equipment
The Journal of the Acoustical Society of America, 1993A diaphragm for acoustic equipment wherein a surface-hardened layer of SiC film is formed on the surface of the diaphragm substrate comprising a completely carbonaceous film. Thus, the diaphragm for acoustic equipment having superior acoustic characteristics by utilizing the superior physical characteristics of carbon can be used effectively as a ...
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Diaphragm, flat-type acoustic transducer, and flat-type diaphragm
The Journal of the Acoustical Society of America, 2006A first conductor and a second conductor are provided at a diaphragm. The first and second conductors intersect magnetic force lines between north poles and south poles of permanent magnets M which are adjacent to one another. When electricity passes through the conductors, a direction in which a force from the magnetic field acts on the current is ...
Hiromi Sotme, Toshiiku Miyazaki
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Graphene oxide diaphragm for acoustic fiber sensing
Optical Fiber Sensors Conference 2020 Special Edition, 2021A fiber sensor composed by a graphene oxide membrane at the tip of a capillary is presented. The graphene oxide membrane acts as a low-reflectivity mirror, distanced from a single mode fiber forming a low finesse Fabry-Perot interferometer. The response of the sensor to acoustic pressure with varying frequency is studied in the range between 5 and 45 ...
Catarina S. Monteiro +3 more
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Acoustic Diaphragm And Speaker
The Journal of the Acoustical Society of America, 2011An acoustic diaphragm includes a diaphragm formed of a uniform material and a first standing wave suppression member provided on a surface of the diaphragm along a first direction of passing through a center of the diaphragm.
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Parylene-diaphragm piezoelectric acoustic transducers
Proceedings IEEE Thirteenth Annual International Conference on Micro Electro Mechanical Systems (Cat. No.00CH36308), 2002This paper reports the fabrication of piezoelectric acoustic transducers built on a 1.5 /spl mu/m thick parylene (both flat 5,000/spl times/5,000 /spl mu/m/sup 2/ square and dome-shaped 2,000 /spl mu/m-radius diaphragm with circular clamped boundary on a silicon substrate) with electrodes and piezoelectric ZnO film.
null Cheol-Hyun Han, null Eun Sok Kim
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