Matches 1 - 50 out of 68 1 2 >


Match Document Document Title
8131002 Electric-acoustic transducer and electronic device  
An electro-acoustic transducer includes a diaphragm, a casing which is formed with an opening for directly or indirectly supporting the diaphragm, a first magnetic pole section provided on a side...
8126168 Capacitive sound transducer having a perforated attenuation disk  
A capacitive sound transducer provided with a perforated attenuation disk. The invention further relates to a capacitive sound transducer and a condenser microphone having such a sound transducer....
8116512 Planar speaker driver  
A planar magnetic driver includes covering plates that are maintained under tension to form a buckled or curved surface, thereby providing for a larger magnetic gap, and allowing for a larger...
8107649 Ribbon for ribbon microphone, manufacturing method of the same, and ribbon microphone  
A ribbon for a ribbon microphone having a magnet forming a magnetic gap, the ribbon which is arranged in the magnetic gap and is vibrated by a sound wave, an electrode for outputting an electric...
8094864 Diaphragm unit and speaker using the same  
A diaphragm unit is arranged to be used in a loudspeaker including a frame. The diaphragm includes a diaphragm and an edge joined to an outer periphery of the diaphragm. The diaphragm extends in a...
8085969 Full range planar magnetic microphone and arrays thereof  
Contemplated planar magnetic microphones have a magnet and diaphragm arrangement such that substantially homogenous vertical and high horizontal magnetic flux density is realized in the...
8085955 Electromagnetic lever diaphragm audio transducer  
A transducer including a frame and a panel disposed within the frame and coupled to the frame such that the panel may rotate relative to the frame about a rotational axis. The transducer includes...
8031889 Acoustoeletric transformation chip for ribbon microphone  
An acoustoelectric transformation chip for a ribbon microphone includes a diaphragm that has a vibrating region and two fixing regions disposed on two opposite sides of the vibrating region, and a...
8031901 Planar speaker driver  
A planar magnetic driver includes covering plates that are maintained under tension to form a buckled or curved surface, thereby providing for a larger magnetic gap, and allowing for a larger...
8031902 Loudspeaker  
A loudspeaker comprises a diaphragm, an edge operable to support, on a frame, the diaphragm in such a manner that enables vibration thereof, and a voice coil operable to generate a driving force....
8009845 Microphone apparatus  
A microphone unit (1) has a first vibration plate. A support member (6) supports the microphone unit (1). A second vibration plate (5) is fixed to the support member (6) at a predetermined distance...
7940952 Electro-acoustic transducer  
An electro-acoustic transducer includes a generally V-shaped diaphragm comprising a folded sheet of film material. The diaphragm also comprises two upper ends, a lower end, an inner surface, and an...
7940953 Magnetic membrane suspension  
An electro-acoustic transducer has a membrane comprises a folded or curved sheet of film material. A frame supports the membrane in at least an upper end thereof. A resilient suspension connects...
7929726 Planar diaphragm acoustic loudspeaker  
A planar diaphragm acoustic loudspeaker having a planar diaphragm biased with a high magnetic flux density magnetic circuit which feeds an acoustic waveguide. The apparatus provides high fidelity...
7929725 Acoustic apparatus and telephone conversation apparatus  
An acoustic apparatus has permanent magnets 2 and 3, which have north poles and south poles magnetized alternately in a stripe-like fashion, at the front and back of a diaphragm 1, respectively;...
7900337 Method of making composite acoustic transducers  
A composite membrane acoustic transducer structure comprising a magnet assembly is arranged adjacent the composite membrane material. The magnet assembly is arranged to produce a flux field. A...
7894619 Acoustic ribbon transducer arrangements  
A ribbonned microphone assembly, for adjustable sound receiving capabilities, including a transducer having a surrounding flux frame for positioning at least two magnets adjacent a suspended ribbon...
7873178 Electro-dynamic planar loudspeaker  
A planar loudspeaker includes a shell pot, a magnet, a diaphragm, and a face plate. The magnet may be positioned in a cavity in the shell pot. The diaphragm may be coupled with the shell pot to...
7795063 Micro-electro-mechanical systems (MEMS) device and process for fabricating the same  
A micro-electro-mechanical systems (MEMS) device includes a back-plate substrate, having an intended region formed with a plurality of perforating holes. A first structural dielectric layer,...
7710371 Variable volume between flexible structure and support surface  
Cells can include variable volumes defined between a flexible structure, such as a polymer layer, and a support surface, with the flexible structure and support surface being attached in a first...
7627134 Magnet retention system in planar loudspeakers  
An electro-dynamic loudspeaker includes a frame, a magnet and a diaphragm. The frame includes a body portion defining a magnet mounting surface as well as a plurality of protrusions extending from...
7430297 Moving ribbon microphone  
A ribbon microphone includes a diaphragm made of an aluminum foil. To provide a corrosion resistance and a favorable electrical connection in the junction between the aluminum foil and backplates...
7236608 Conductors for electro-dynamic loudspeakers  
Electro-dynamic loudspeakers typically include a diaphragm that is secured to a frame and has a conductor applied to at least one surface of the diaphragm. The conductor is connected to a power...
7203332 Magnet arrangement for loudspeaker  
An electro-dynamic loudspeaker includes a frame, a plurality of magnets and a diaphragm. The frame includes a molded plastic body. The magnets may be molded into the frame in a determined...
7174024 Flat acoustic conversion device  
A flat acoustic conversion device includes two magnets disposed so that their magnetic poles face upward arid are adjacent to or in contact with one another, and the magnetic pole faces of...
7146019 Planar ribbon electro-acoustic transducer with high SPL capability and adjustable dipole/monopole low frequency radiation  
A planar electro-acoustic transducer has an adjustable back cap option that provides a dipole/monopole radiation that has different roll-off characteristics. The planar electro-acoustic transducer...
7146017 Electrical connectors for electro-dynamic loudspeakers  
An electro-dynamic loudspeaker is typically provided with a diaphragm mounted to a frame in tension. The diaphragm is provided with a plurality of electrical traces that are disposed within a...
7142688 Single-ended planar-magnetic speaker  
A planar-magnetic electro-acoustic transducer including a support structure and a magnetic structure carried by the support structure, the magnetic structure comprising a multiplicity of...
7136501 Acoustically enhanced electro-dynamic loudspeakers  
An electro-dynamic loudspeaker is provided with dampening arrangements that contribute to improved acoustical properties for the electro-dynamic planar loudspeaker. The dampening arrangements...
7106880 Universal ribbon element-module for two or more membrane-widths with optimized flow and drive  
A loudspeaker module in the form of a ribbon element, where the module can be equipped with a membrane, 50 millimeters in width or narrower, and with any length from 50 millimeters to 2500...
7088837 High efficiency planar magnetic transducer with angled magnet structure  
An acoustical speaker and planar magnetic transducer therefore wherein the transducer is provided with at least array of spaced magnets which are oriented having their pole faces at an angle with...
7020301 Loudspeaker  
A loudspeaker comprising at least one magnet 27, a yoke 24 fixed to a bottom surface of the magnet, a flat plate 26 fixed on an upper surface of the magnet, a magnetic circuit 29 having a magnetic...
6963654 Diaphragm, flat-type acoustic transducer, and flat-type diaphragm  
A 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...
6956953 Electroacoustic transducer with field replaceable diaphragm carrying two interlaced coils, without manipulating any wires  
The present invention is directed to a diaphragmatic (planar) electroacoustic transducer that forms a complete sound radiating transducer and provides high efficiency and linearity. The diaphragm...
6934402 Planar-magnetic speakers with secondary magnetic structure  
A planar magnetic transducer having enhanced magnetic structures which increases performance over a single-ended device but mitigates some of the drawbacks of double ended devices, including a...
6868166 Chord-like vibration loudspeaker  
This invention is a loudspeaker that consists of some vibratory membranes and magnets. Every vibratory membrane is a part of a soft conductive tape and is put in a magnetic field. When the...
6845166 Plane driving type electroacoustic transducer  
A plane driving type electroacoustic transducer having a film of diaphragm with a conduction pattern formed thereon and a magnetic circuit, wherein a vibration damping layer is provided on the...
6834113 Loudspeaker system  
A loudspeaker system, which has the ability to create a homogeneous sound over large distances, comprising at least one line-source of acoustical radiation, each comprising three or more...
6810126 Planar magnetic transducer  
A panel transducer includes a diaphragm with areas of multiple electrical conductors, two rows of magnetic bars, two metal plates and a clamping frame. The diaphragm is clamped in the clamping...
6560348 Contact connections  
The invention proposes a contact connection for sound reproduction devices according to the flexural wave principle. Since the drive systems 21 of such installations require high current...
6535612 Electroacoustic transducer with diaphragm securing structure and method  
An electroacoustic transducer which has at least one stator member with an operating surface and a suspended emitter diaphragm spaced from the operating surface of the stator member to enable the...
6434252 Ribbon microphone  
A ribbon microphone having magnets positioned adjacent north and south pole pieces. The magnets are of uniform thickness along their lengths, and do not taper. The pole pieces are substantially the...
6205228 Horn loaded pleated ribbon high frequency acoustic transducer with substantially uniform coupling  
An electro-dynamic acoustic transducer has a pleated diaphragm in which an accordion-like alternating movement of the adjacent pleats is perpendicular to the radiation (acoustic) axis of the...
6185310 Planar magnetic acoustical transducer stamped pole structures  
A planar magnetic acoustical transducer including a diaphragm with electrical circuit carrying conductors having a width substantially equal to a combined width of a plurality of magnetic fields...
6111970 Suspension for high power pleated ribbon transducer  
An electro-dynamic acoustic transducers has a pleated diaphragm in which an accordion-like alternating movement of the adjacent pleats is perpendicular to the radiation (acoustic) axis of the...
6108433 Method and apparatus for a magnetically induced speaker diaphragm  
An ultrasonic emitter device having broad frequency range capacity with relatively large diaphragm displacement compared to typical electrostatic diaphragm movement. The device includes a core...
5912863 Electro-acoustic transducer  
An elongated, electrically conductive diaphragm is placed in a strongly magnetic field to produce a linear and an elongated sound source giving a high sound energy. At least two elongated...
5901235 Enhanced efficiency planar transducers  
Planar magnetic transducers including diaphragms having electrical conductors thereon which are mounted within frames so that spaced magnets are disposed on opposite sides of central sound...
5426707 Electrodynamic loudspeaker with cooling arrangement  
A loudspeaker, comprising a magnet unit which generates a magnetic field and a movable element suspended for resilient movement around a stable rest position for radiating sound with selected...
5325439 Loudspeaker apparatus  
A loudspeaker apparatus utilizing a ribbon diaphragm which is capable of transforming an electrical signal into an audio acoustical signal. The diaphragm includes a first side and a second opposite...
Matches 1 - 50 out of 68 1 2 >