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High sound pressure piezoelectric micromachined ultrasonic transducers using sputtered potassium sodium niobate. [PDF]
Microsyst NanoengXia F +12 more
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Communication channel preference for raising rabies awareness among dog owners in Thailand: A nationwide study. [PDF]
One HealthWorrawattanatam W +5 more
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Loudspeaker mounting frame, loudspeaker and cabinet comprising a loudspeaker
The Journal of the Acoustical Society of America, 2008A loudspeaker mounting frame (1) for an electronic appliance has a central opening for receiving a loudspeaker membrane (24), and a plurality of through holes (11) surrounding said central opening for receiving fixing means (25). The through holes (11) are tapered so as to accommodate the fixing means (25) in varying orientations.
Cornelius Sperle +2 more
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Horn loudspeaker and loudspeaker systems
The Journal of the Acoustical Society of America, 2004A horn loudspeaker comprises: a horn (22) having a throat (26) and a mouth (30); a primary electro-acoustic driver (24) mounted at or adjacent the throat of the horn and directed generally along the horn; and at least one secondary electro-acoustic driver (32T, 32B, 32L, 32R) mounted part-way along the horn and directed generally across the horn.
Oliver B. Wright +2 more
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Loudspeaker system with stackable loudspeaker units
The Journal of the Acoustical Society of America, 2002A loudspeaker system includes at least two loudspeaker units. Each loudspeaker unit includes at least one loudspeaker mechanism mounted on a loudspeaker enclosure. The loudspeaker enclosure includes an outer cabinet body having an open front side, a closed rear side, opposed lateral walls, and opposed top and bottom walls, and an inner baffle frame ...
Waterson Chen, Chin-Lung Lin
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Magnetic circuit for loudspeaker and loudspeaker comprising it
The Journal of the Acoustical Society of America, 2007A magnetic circuit comprises a yoke (10) wherein the bottom section (10b) of the yoke (10) is thicker than a cylinder outer peripheral section (10a). This magnetic circuit is constituted of the yoke, a magnet (2) joined to the bottom section of this yoke, and a top plate (3) joined to the top of the magnet to form a magnetic gap between the top plate ...
Kazuyoshi Umemura +3 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
openaire +4 more sources