Results 271 to 280 of about 27,501 (314)
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Magnetostrictive microelectromechanical loudspeaker
The Journal of the Acoustical Society of America, 2013A microelectromechnical-loudspeaker based on the magnetostrictive effect is presented. The membrane consists of a comb structure of monomorph bending cantilevers with an area of about 16 mm2. Prototypes generate a sound pressure level (SPL) of up to 102 dB at 450 Hz with a total harmonic distortion of 2% inside a 2 cm3 measurement volume.
Reinhard Lerch, Thorsten Albach
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An Ultrathin Flexible Loudspeaker Based on a Piezoelectric Microdome Array
IEEE transactions on industrial electronics (1982. Print), 2022Jinchi Han, J. Lang, V. Bulović
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Loudspeaker enclosure with acoustically coupled loudspeaker damper
The Journal of the Acoustical Society of America, 1979A loudspeaker system is described in which a driven speaker is acoustically coupled in the speaker enclosure with a variable acoustical damper, the damper having an acoustical cone, the movement of which is dampened by an induction coil connected across variable resistance means.
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Loudspeaker unit and loudspeaker system employing the unit
The Journal of the Acoustical Society of America, 1998A loudspeaker unit includes a magnetic system of dual magnetic gaps formed with a permanent magnet disk carrying on both sides top and bottom plates and a cylindrical yoke surrounding the plates to form therebetween upper and lower magnetic gaps, and a vibratory system formed with a cylindrical voice coil bobbin carrying upper and lower voice coils for
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The Journal of the Acoustical Society of America, 1979
A loudspeaker system for vehicles wherein a monolithic, elongated element including end portions thereof constituting loudspeaker cabinets. The elongated element is preferably designed in such a way that it has a close fit against the ceiling of the vehicle in which the loudspeaker system is to be mounted, whereby the elongated element can have an open
Koppelomaki Leo, Persson Per
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A loudspeaker system for vehicles wherein a monolithic, elongated element including end portions thereof constituting loudspeaker cabinets. The elongated element is preferably designed in such a way that it has a close fit against the ceiling of the vehicle in which the loudspeaker system is to be mounted, whereby the elongated element can have an open
Koppelomaki Leo, Persson Per
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Advancements toward a high-power, carbon nanotube, thin-film loudspeaker
, 2014The carbon nanotube (CNT) thermophone has been explored as a novel loudspeaker. Potential advantages of this technology in the audio industry include ultra-lightweight, low production cost, compact size, and independence from rare-earth materials.
Andrew Barnard +6 more
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The Journal of the Acoustical Society of America, 1997
The property of ‘‘directional tone color,’’ especially characteristic of a violin [G. Weinreich, J. Acoust. Soc. Am. 101 (to be published)], consists of a directional radiation pattern which is a very strong function both of angle and of frequency.
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The property of ‘‘directional tone color,’’ especially characteristic of a violin [G. Weinreich, J. Acoust. Soc. Am. 101 (to be published)], consists of a directional radiation pattern which is a very strong function both of angle and of frequency.
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The Journal of the Acoustical Society of America, 2003
A loudspeaker includes a cylindrical sound case provided with a plurality of radial ribs thereby dividing interior of the cylindrical sound case into a plurality of chambers and a common circular space at a central portion and therefore forming a plurality of resonance chambers, a sound coil assembly including cylindrical member which is open at one ...
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A loudspeaker includes a cylindrical sound case provided with a plurality of radial ribs thereby dividing interior of the cylindrical sound case into a plurality of chambers and a common circular space at a central portion and therefore forming a plurality of resonance chambers, a sound coil assembly including cylindrical member which is open at one ...
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The Journal of the Acoustical Society of America, 2009
Gilles Milot, Francois Malbos
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Gilles Milot, Francois Malbos
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Newsletter of the IRE Professional Group on Audio, 1951
Discusses the special features of loudspeakers and presents a detailed explanation of its technology and communications capabilties.
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Discusses the special features of loudspeakers and presents a detailed explanation of its technology and communications capabilties.
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