Results 281 to 290 of about 35,202 (339)
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High Efficiency Thermoacoustic Loudspeaker Made with a Silica Aerogel Substrate
Advanced Materials & Technologies, 2018The extremely low thermal effusivity of the silica aerogel is exploited to develop a high efficiency thermoacoustic (TA) loudspeaker with solid substrate.
P. La Torraca +8 more
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Loudspeaker and stereophonic loudspeaker system
The Journal of the Acoustical Society of America, 1979A loudspeaker has a rectangular casing providing a frontal wall in which are mounted a plurality of speaker mechanisms responding to differing frequency ranges. The high frequency speaker is oriented so that the axis of radiation is inclined upwardly and to one side of the normal to the front wall. In the preferred embodiments a lower frequency speaker,
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Loudspeaker, and module and electronic apparatus using the loudspeaker
The Journal of the Acoustical Society of America, 2008A loudspeaker is provided that satisfies requirements for both a small size and a high sound pressure. In addition, the heat capacity of the magnetic circuit and the heat dissipation of the voice coil are improved in this loudspeaker. Using at least two pieces of bar magnets ( 21 ), an outer magnet type magnetic circuit is structured in which the ...
Shigeru Tomoeda +2 more
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The Journal of the Acoustical Society of America, 2007
This paper deals with the acoustic modeling and measurement of a needle-to-grid plasma loudspeaker using a negative Corona discharge. In the first part, we summarize the model described in previous papers, where the electrode gap is divided into a charged particle production region near the needle and a drift region which occupies most of the inter ...
Béquin, Philippe +3 more
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This paper deals with the acoustic modeling and measurement of a needle-to-grid plasma loudspeaker using a negative Corona discharge. In the first part, we summarize the model described in previous papers, where the electrode gap is divided into a charged particle production region near the needle and a drift region which occupies most of the inter ...
Béquin, Philippe +3 more
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Application of N-Doped Three-Dimensional Reduced Graphene Oxide Aerogel to Thin Film Loudspeaker.
ACS Applied Materials and Interfaces, 2016We built a thermoacoustic loudspeaker employing N-doped three-dimensional reduced graphene oxide aerogel (N-rGOA) based on a simple template-free fabrication method.
C. Kim +5 more
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Loudspeaker enclosure with isolation of loudspeaker vibration
The Journal of the Acoustical Society of America, 1987A multi-chamber loudspeaker enclosure comprises a primary chamber having a principle interior volume and a secondary chamber having a minor interior volume substantially smaller than the principal interior volume. The secondary chamber comprises an elongated housing mounted to a front wall of the primary chamber.
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The Journal of the Acoustical Society of America, 1985
A speaker diaphragm comprises a composite film prepared by combining a reinforcing material such as a mica, a needle or fiber filler, or talc, with a polybisphenol phthalate resin consisting of an aromatic dicarboxylic acid and a dihydric phenol.
Takashi Takeda +3 more
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A speaker diaphragm comprises a composite film prepared by combining a reinforcing material such as a mica, a needle or fiber filler, or talc, with a polybisphenol phthalate resin consisting of an aromatic dicarboxylic acid and a dihydric phenol.
Takashi Takeda +3 more
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Evaluation of Loudspeaker-Based Virtual Sound Environments for Testing Directional Hearing Aids.
Journal of american academy of audiology, 2016BACKGROUND Assessments of hearing aid (HA) benefits in the laboratory often do not accurately reflect real-life experience. This may be improved by employing loudspeaker-based virtual sound environments (VSEs) that provide more realistic acoustic ...
Chris Oreinos, J. Buchholz
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Design of a Planar First-Order Loudspeaker Array for Global Active Noise Control
IEEE/ACM Transactions on Audio Speech and Language Processing, 2018This paper proposes a method to design a planar first-order loudspeaker array structure for global active noise control. Compared with the traditional spherical loudspeaker array, the planar array provides a practical design with flexible source ...
Bing Bu, C. Bao, Mao-shen Jia
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The Journal of the Acoustical Society of America, 2010
In a process for producing a loudspeaker diaphragm, pulp is deposited on a paper-making mold in the presence of vortex stream of water having pulp dispersed therein in a paper-making bath. Pulp is deposited on the paper-making mold while at least the water having pulp dispersed therein is rotated by the vortex stream in the paper-making bath ...
Shinya Mizone, Suzuki Takashi
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In a process for producing a loudspeaker diaphragm, pulp is deposited on a paper-making mold in the presence of vortex stream of water having pulp dispersed therein in a paper-making bath. Pulp is deposited on the paper-making mold while at least the water having pulp dispersed therein is rotated by the vortex stream in the paper-making bath ...
Shinya Mizone, Suzuki Takashi
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