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JP2008199336A |
To provide a ribbon microphone unit that can be easily exchanged while surely maintaining electrical connection between the ribbon microphone unit and wiring with the primary side of a step-up transformer, and a ribbon microphone.The rib...
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JP2008167247A |
To prevent disconnection of lead wire for supplying a signal to a coil, to reduce leak magnetic fluxes and to raise radiation nature.This voice coil motor M1 is a movable magnet type voice coil motor having a stator 21 and a moving membe...
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JP4118863B2 |
The object is to provide a bone conduction device and its tympanum, wherein the bone conduction device can be efficiently mounted without generating a dead space in a case having a limited installation space such as a cellular phone's ca...
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JP2008125051A |
To provide an acoustic transducer for improving a conventional balanced version pendulum type fault.The acoustic transducer includes, within a casing (300), a diaphragm (350) at least a portion of which is constituted of magnetically per...
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JP4091006B2 |
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JP4080870B2 |
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JP4073382B2 |
The present invention provides a vibration sensor capable of preventing a diaphragm electrode from being damaged without lowering sensitivity as well as realizing a satisfactory assembling process. The vibration sensor comprises a fixed ...
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JP4037409B2 |
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JP4030056B2 |
Disposed within a space formed between a base cover ( 2 ) and a top cover ( 1 ) attached to the base cover ( 2 ) is an electromagnetic sound generating part which has a diaphragm ( 9 ) attached to the base cover ( 2 ) and a drive part ca...
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JP4006391B2 |
A primary object of the present invention is to provide a surface-placed sound capturing microphone with a rotatable cable connecting member of which an output cable extracted position can be simply changed as required. According to FIG....
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JP3870949B2 |
To prevent deterioration of tone quality in an inverse cone type speaker system. In the speaker system 1, a conic shape cone paper 2 is attached to a frame 3 in a convex shape. A bobbin 8 with a voice coil 9 is fixed to the cone paper 2....
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JP2006319595A |
To provide a method of manufacturing a ribbon microphone by which the tension of a ribbon type diaphragm can be adjusted with uniform quality without the need for a skill and the vibrating state of the ribbon type diaphragm can easily be...
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JP3844641B2 |
To provide an electric/acoustic converter capable of surely fixing a frame and a housing by laser welding, A diaphragm unit part 3 is provided with a diaphragm frame 51, a diaphragm 52, and a resin film 53. The diaphragm 52 is arranged i...
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JP2006304295A |
To provide a loudspeaker with low-frequency oscillation capable of emitting sound whose frequency is relatively low and improving the acoustic effect of earphones.In a housing 21, a ring portion 211 is formed by extending the bottom inwa...
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JP3822600B2 |
The armature of an electromagnetic transducer, extending through the polarizing flux between opposing permanent magnet pole faces, is snubbed to limit its shock-induced excursions normal to the directions of its extent and of the flux fi...
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JP3808951B2 |
To improve the resonance effect of a diaphragm by specifying the thickness of the diaphragm in a machine in which a vibrator is attached to the diaphragm, the vibrator is driven by an ultrasonic wave generator. In an ultrasonic cleaning ...
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JP2006186615A |
To enhance shock resistance at the intermediate part of a frame which cantilevers an armature while keeping compact configuration of an electric oscillation transducer of balanced armature type.The gap between the rear surface wall 32a o...
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JP2006157753A |
To improve reliability by making the holding strength of a magnetic circuit portion ample.In a sub-panel 3 serving as the enclosure of a magnetically driven actuator, an external cylinder 3a is connected to an internal cylinder 3b in the...
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JP3749662B2 |
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JP3747361B2 |
To provide an electromagnetic acoustic transducer that can reduce a stress applied to a coil wire and ensure high reliability. The electromagnetic acoustic transducer 1 consists of a base 24 made of a magnetic material, a magnetic core 2...
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JP2006050665A |
To improve an electrodynamic type planar loudspeaker, and to provide a method for manufacturing the electrodynamic type planar loudspeaker.The electrodynamic type loudspeaker typically includes a diaphragm, having a conductor applied to ...
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JP2006041768A |
To provide an electroacoustic transducer which has enhanced anti-shock performance and therefore hardly undergoes a change in an output sound pressure and a distortion factor even when receiving an external shock.In the electroacoustic t...
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JP2006042021A |
To provide a compact and easily easy-to-handle speaker for a helmet by which sound can be heard even under a noisy environment.A movable device 3 is oscillated by converting an electric signal obtained from a sound source into oscillatio...
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JP2005286984A |
To provide a speaker for mobile terminal capable of realizing high sound quality after establishing wide frequency characteristics and good high frequency distortion characteristics.The speaker includes a frame having a side wall with a ...
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JP2005277868A |
To provide a speaker device etc. having an attaching structure of a resin frame and a resin grill in which no looseness due to a change in environment such as temperature change is generated.The speaker device is provided with the resin ...
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JP2005269330A |
To provide a loudspeaker apparatus capable of efficiently radiating heat produced in a voice coil or the like so as to prevent exfoliation or the like of an adhesive for fixing a connection member to various components of the loudspeaker...
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JP2005244380A |
To provide an electroacoustic transducer capable of eliminating the need for connection works of conductors configuring a coil and being used for a two-terminal electroacoustic transducer or a three-terminal electroacoustic transducer.Co...
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JP2005244427A |
To provide a unidirectional condenser microphone unit wherein howling is scarce.In the unidirectional condenser microphone unit, wherein a diaphragm 20 stretched to a support ring 21 and a fixed pole 30 supported by an insulation seat 50...
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JP2005525762A |
The present invention relates to an electromagnetic vibrator of variable reluctance type, according to a new principle which provides higher efficiency, smaller dimension, and higher reliability compared to known technology. This has bee...
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JP2005223414A |
To provide a speaker apparatus capable of being easily fitted to the inside of a structure or the like and from which a sufficient acoustic effect can be obtained.The speaker apparatus is provided with: a cylindrical outer yoke 11; a voi...
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JP2005525031A |
Electrodynamic speakers typically include a diaphragm with a conductor attached to one of the surfaces. The diaphragm is attached to the frame. The conductor is connected to a power source to supply current through a linear trace of the ...
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JP3680562B2 |
To provide a high-quality product which prevents damage and performance deterioration by a falling impact, relating to an electro-mechano-acoustic converter used mainly for portable telephones, or the like. This electro-mechano-acoustic ...
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JP2005192178A |
To expand a space of a back chamber, to improve the response characteristic of sensitivity and a frequency, and to simplify processes to reduce process cost by integrating a first base for performing an insulating function by a conventio...
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JP2005176292A |
To provide a speaker capable of converting an electrical signal into a sound signal effectively, having a long life, and capable of producing a large voice output.This speaker comprises at least, a bobbin provided with a through hole, a ...
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JP2005168034A |
To improve the sound quality of an analog cartridge employing a metal magnet.Diffusion of the lines of magnetic force is suppressed by blocking only the outer part of a bundle of lines of magnetic force, jutting out of the metal magnet, ...
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JP3660557B2 |
To provide an electroacoustic transducer that eliminates the orientation in a circumferential direction when it is mounted onto a board of an external device without causing fluctuation in the acoustic characteristic and to provide a mou...
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JP3651472B2 |
To provide a speaker having improved its acoustic characteristics. An opening 15 provided in a frame 12 enables the insertion of a jig 24 for setting an inner peripheral portion of a suspension holder 13 at a regular position. As this re...
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JP3631935B2 |
To provide an electroacoustic transducer that can obtain a proper sound pressure characteristic, without hindering vibration of an armature section. The electroacoustic transducer 1 has a housing 2, consisting of a top housing 4 and a bo...
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JP3602792B2 |
A taut armature reciprocating impulse transducer (100) which typically provides a non-linear hardening spring response is adapted to provide a non-linear softening spring response by the addition of magnetic damping elements (106). Two o...
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JP3583262B2 |
To utilize an electromagnetic sound converter under serve environment such as being high/low temperature, high humidity, and much dust despite of a thin structural form be generating reproduced sound of sound or noise signals from a vibr...
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JP2004304694A |
To provide a vibration speaker provided with a sound generating function and a vibration generating function that attains a low profile by integrating the sound generating function and the vibration generating function and prevents a deg...
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JP2004247812A |
To provide an electroacoustic transducer capable of properly vibrating a diaphragm by eliminating variations in a gap between a coil and a magnet and to provide an electronic apparatus employing the same.The electric signal transducer 1 ...
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JP3556168B2 |
To provide a bone conduction loudspeaker that can suppress unnecessary vibration in a vibration system so as to prevent production of noise sound due to abnormal resonance, thereby fully improving the sound quality. The bone conduction l...
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JP2004222215A |
To provide a sound track disk (so called a record) in which the relation between a stylus and sound tracks is rationalized and its player by considering why the sound track disk has been failed.In the sound track disk (so called record),...
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JP3532715B2 |
To provide the electromagnetic acoustic transducer which is prevented from deteriorating in acoustic performance owing to a reflow solder process. A decrease in the lowest resonance frequency Fo of a resonance plate 22 by the demagnetiza...
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JP2004507951A |
The present invention provides a bone conduction oscillator capable of increasing output efficiency, widening the frequency band, and simplifying the structure thereof. The bone conduction vibrator according to the present invention has ...
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JP2004056771A |
To provide a plane type electroacoustic transducer of a moving magnet type formed by a vibrating membrane having a thin film magnet magnet-landed to a thickness direction.The thin film magnet 12 is film-formed on a macromolecule film 11 ...
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JP3496140B2 |
To provide a sound wave receiver that is configured by enhancing a separate version stereo technology. The sound wave receiver is provided with a separator 1 and at least two microphones 6a, 6b placed on the separator 1. The separator 1 ...
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JP2003309897A |
To quickly stop the vibrations of a vibrator of a circuit for controlling the vibrator.A spring vibration control integrated circuit 12 generates an intermittent signal, a switching element 15 is turned ON/OFF by the intermittent signal ...
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JP2003294545A |
To provide a force detection device improved for vibration detection or a filter, or at least for alternative use thereof.This force detection device has an electromagnetic material and a magnetic element capable of moving relatively to ...
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