Abstract: A micro-electro-mechanical-system microphone package includes a substrate, a micro-electro-mechanical-system microphone chip mounted on the substrate, and a cover attached to the substrate to cover the micro-electro-mechanical-system microphone chip. The cover is provided with a sound inlet through which the micro-electro-mechanical-system microphone receives external sound. The micro-electro-mechanical-system microphone chip includes a conductive base connected to a constant voltage, a shielding layer supported by the conductive base and connected to the constant voltage, a diaphragm disposed between the conductive base and the shielding layer, and a back plate also disposed between the conductive base and the shielding layer.

Abstract: A loudspeaker grille for a wall-mount loudspeaker in a home environment is disclosed, which comprises a frame attached directly to a wall where a loudspeaker being mounted, the loudspeaker enclosure lending no support to the frame, and a cover stretched across the frame, the cover being substantially transparent to acoustic energy, wherein the cover provides protection as well as decoration to the underneath loudspeaker.

Abstract: The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like.

Abstract: This invention provides an audio speaker with improved physical safety isolation between a voice coil and other electrically live elements.

Abstract: A microphone has at least one non-conductive component with at least one side covered by a metal layer which in turn is covered by a protective layer, and the microphone can be a component of a delegate unit of a conference system or a congress system.

Abstract: A portable waterproof equipment includes a body configured for containing articles therein, a sealing structure, a cable and a sealing device. The body has an opening configured for providing an access for the articles entering into the body. The sealing structure is configured for sealing the opening of the body. The cable passes through the body and has an inner end located within the body. A plug is provided at the inner end of the cable and configured for connecting with phone jacks of the articles. The sealing device is arranged between the cable and the body.

Abstract: A speaker module for a consumer electronics device encloses a speaker. The speaker module is sized to fit within a housing of the consumer electronics device and below an input control of the consumer electronics device. The speaker module is oriented so that the speaker projects audible sound through one or more interstitial gaps between the input control and the housing, or one or more through-holes formed in the input control.

Abstract: A device includes a main body, a microphone module, and an acoustic guard. The microphone module is connected to the main body and comprises a first acoustic opening and a second acoustic opening, wherein the microphone module receives sound waves via both the first and second acoustic openings. The acoustic guard covers the second acoustic opening and comprises a first sound inlet via which the sound waves enter the acoustic guard and reach the second acoustic opening.

Abstract: A directional silicon condenser microphone which has an additional back chamber includes a case having a front sound hole for passing through a front sound; an acoustic delay device for delaying a phase of a sound; a substrate including a chamber case, a MEMS chip having an additional back chamber formed by the chamber case, an ASIC chip for operating the MEMS chip, a conductive pattern for bonding the substrate to the case, and a rear sound hole for passing through a rear sound. The case is fixed to the substrate; and an adhesive for bonding the case and the substrate is applied to an entirety of a bonding surface of the case and the substrate.

Abstract: A silicon condenser microphone has an additional back chamber and a sound hole in a PCB. The microphone includes a case for blocking an external sound; a substrate including a chamber case, a MEMS chip having an additional back chamber formed by the chamber case, an ASIC chip for operating the MEMS chip, a conductive pattern for a bonding to the case, and a sound hole for passing the external sound. A fixing means fixes the case to the substrate and an adhesive is applied to an entirety of a bonding surface of the case and the substrate fixed by the fixing means. When the sound hole is formed through the PCB instead of the case, the mounting space for a microphone is reduced. The chamber case forms the additional back chamber under the MEMS chip and is employed to increase back chamber space to improve sensitivity and reduce noise.

Abstract: The invention relates to a microelectromechanical microphone packaging system. The microelectromechanical microphone packaging system comprises a substrate, a chip, a microelectromechanical microphone, a conductive glue, a non-conductive glue and a cover. The substrate has a first surface. The chip is mounted on the first surface of the substrate. The microelectromechanical microphone is mounted on the first surface of the substrate, and electrically connected to the chip. The chip is enclosed by the non-conductive glue. The non-conductive glue is enclosed by the conductive glue. The cover is mounted on the first surface of the substrate to form a containing space, and has an acoustic aperture. The microelectromechanical microphone packaging system utilizes the conductive glue enclosing the chip and the non-conductive glue to shield interference from outside noise and obtain a shielding effect. In addition, the cover does not need to be made of metal material.

Abstract: Audio systems are housed by an enclosure with a substantially waterproof seal such that the audio systems may be mounted in outdoor locations such as decks, boat docks, and the like. The enclosure may include a panel that opens relative to a tub portion, such as by a hinged connection, and a substantially waterproof seal located there between. The audio systems may include one or more various features such as external speaker connections so that speakers may be located distantly from the enclosure. Other features may include internal amplification that may be stand-alone or integrated into an audio signal source such as a radio or compact disc player or combinational device such as an automobile head unit. Additional features may include a power supply that provides power for the amplification and/or audio source, an external cover with a substantially waterproof seal relative to the enclosure, filtered ventilation via an electric fan, and other related features.

Abstract: A microphone shield system captures sound in adverse conditions. The system includes a microphone positioned within a membrane. The membrane is inflated around the microphone to form an enclosure. The inflated membrane passes signals within a selected frequency range. The membrane may block or attenuate signals above and/or below the frequency range to pass a desired sound with little surrounding interference.

Abstract: A directional silicon condenser microphone having an additional back chamber is disclosed. The directional silicon condenser microphone comprises a case having a front sound hole for passing through a front sound; a acoustic delay device for delaying a phase of a sound; a substrate including a chamber case, a MEMS chip having an additional back chamber formed by the chamber case, an ASIC chip for operating the MEMS chip, a conductive pattern for bonding the substrate to the case, and a rear sound hole for passing through a rear sound; a fixing means for fixing the case to the substrate; and an adhesive for bonding the case and the substrate, wherein the adhesive is applied to an entirety of a bonding surface of the case and the substrate fixed by the fixing means.

Abstract: Sintered elements for use in hazardous areas comprise a first flame path having a first length and a first pore size, and a second flame path having a second length and a second pore size. The second length is greater than the first length and the second pore size is greater than the first pore size. Sounders and loud speakers for use in hazardous areas comprise a housing having a horn and a rear enclosure, a driver assembly, and a sintered element.

Abstract: The present invention relates to electromagnetically-shielded speaker (or microphone) systems for generating acoustic sounds (or electric signals) based upon electric signals (or acoustic sounds) supplied thereto while minimizing irradiation of undesirable electromagnetic waves. More particularly, the present invention relates to various speaker systems each of which has at least one source for emitting the undesirable waves and at least one counter member for emitting counter electromagnetic waves capable of canceling at least a substantial portion of the undesirable waves due to their phase characteristics. The present invention instead relates to various speaker systems each of which has at least one electric and/or magnetic shields capable of shielding and/or terminating electric waves and magnetic waves of the undesirable waves, respectively.

Abstract: The present invention relates to an electromagnetically-countered system including at least one wave source irradiating harmful electromagnetic waves and at least one counter unit emitting counter electromagnetic waves for countering the harmful waves by such counter waves. More particularly, the present invention relates to generic counter units of electromagnetically-countered systems and to various mechanisms for countering the harmful waves by the counter units such as, e.g., by matching configurations of the counter units with those of the wave sources, matching shapes of such counter waves with shapes of the harmful waves, and the like. The present invention also relates to various methods of countering the harmful waves with the counter waves by such source matching or wave matching and various methods of providing the counter units as well as counter waves. The present invention further relates to various processes for providing such systems, such counter units thereof, and the like.

Abstract: A wind-shielded acoustic sensor, having a microphone and a housing of the microphone. The housing has a streamlined, continuous profile about a latitudinal axis and a longitudinal axis thereof, such that wind-induced noise can be reduced. A plurality of uniformly spaced sound ports are formed along a plurality of circumferences centered about a longitudinal axis thereof. At least one region of the housing is sufficiently thin and pliable such that deformation will occur while subjected to wind. Thereby, both acoustic signals and wind-related random-like pressure fluctuations are transmitted into the cavity enclosed by the housing.

Abstract: The present invention relates to an electromagnetically-countered system including at least one wave source irradiating harmful electromagnetic waves and at least one counter unit emitting counter electromagnetic waves for countering the harmful waves by such counter waves. More particularly, the present invention relates to generic counter units of electromagnetically-countered systems and to various mechanisms for countering the harmful waves by the counter units such as, e.g., by matching configurations of the counter units with those of the wave sources, matching shapes of such counter waves with shapes of the harmful waves, and the like. The present invention also relates to various methods of countering the harmful waves with the counter waves by such source matching or wave matching and various methods of providing the counter units as well as counter waves. The present invention further relates to various processes for providing such systems, such counter units thereof, and the like.

Abstract: An exemplary electromagnetic interference shielding structure, includes a substrate and a metallic film formed on at least one surface of the substrate. The substrate is made of an alloy of Ni and Fe, and the metallic film is made of an alloy of Ni, Fe, Cu and Mo.

Abstract: A method and apparatus for providing a loudspeaker assembly is provided. In accordance with at least one embodiment, a method is provided which comprises forming a loudspeaker frame so as to define a driver housing portion, a horn portion, and a conformal portion. A driver aperture is defined for the driver housing portion, and a port aperture is defined for the horn portion. A driver is attached to the loudspeaker frame proximate to the driver aperture. A rear baffle is applied to a first conformal portion surface of the conformal portion of the loudspeaker frame. The rear baffle defines a horn cavity wall of a horn cavity of the horn portion. The horn cavity has an increasing cross sectional area as the distance from the driver housing portion increases. A grille is applied to a second conformal portion surface of the conformal portion of the loudspeaker frame.

Abstract: A wide dispersion speaker system 1 comprises a cone type speaker unit 2, and a restricting element 10A. The restricting element 10A is provided with a center hole 11 at a center section thereof, and a peripheral hole 12 located outward relative to the center hole 11. The restricting element 10A has an annular sound travel inhibiting portion 19 positioned radially outward relative to the center hole 11 and radially inward relative to the peripheral hole 12. An outer end in a radial direction of the sound travel inhibiting portion 19 is positioned at a substantially middle point between an outer end in the radial direction of the center hole 11 and an outer end in the radial direction of the peripheral hole 12 or positioned radially outward relative to the substantially middle point.

Abstract: A preferred embodiment of portable lunchbox equipment that is particularly useful at construction and other jobsites is disclosed which provides important desirable features and functionality comprising a housing, at least one charger for charging a removable battery pack, an audio unit for producing an audio signal, a heating unit, an insulated compartment, a cooling unit for the compartment, a cord and plug for connecting said apparatus to a source of AC power, and circuitry for selectively applying power to the audio unit, the charger and the heating unit.

Abstract: The present invention aims to stabilize sound-electricity conversion characteristics of a diaphragm-type sound-electricity conversion device as well as to decrease the noise level of an ultrasonic diagnostic apparatus using the sound-electricity conversion device. The sound-electricity conversion device is configured by a capacitor cell including a lower electrode formed on a silicon substrate and an upper electrode over the lower electrode, the lower and upper electrodes sandwiching a cavity. An electrode short-circuit prevention film is formed on the upper electrode on the cavity side. The electrode short-circuit prevention film is formed of a material with an electrical time constant shorter than 1 second and longer than 10 microseconds, such as silicon nitride containing a stoichiometrically excessive amount of silicon.

Abstract: A capacitor microphone includes a battery holder including a microphone unit housing at one end and a battery holder at the other end, the battery holder being coupled to a connector sleeve; an output connector housed in the connector sleeve, and detachably receiving a grounding sleeve of a microphone cable; a cylindrical conductive battery cover which is movable between a position covering the battery holder and a position releasing the battery holder and is electrically connected to the microphone unit housing at the position covering the battery holder; and an elastic and conductive cloth which is present between the connector sleeve and the battery cover, and is in contact with the connector sleeve and the battery cover, the connector sleeve and the battery cover being electrically connected.

Abstract: A microphone shell includes a top wall and a side wall extending downwardly from peripheral area of the top wall. A receiving room is formed between the top wall and the side wall for containing a microphone soldered with a printed circuit board, and a through hole arranged on center of the top wall. Voice is transmitted only through the through hole and gathered in the receiving room of the microphone shell, and then received by the microphone. In addition the microphone receives no external noise because the microphone shell covers the microphone and obstructs the external noise. Therefore, the microphone shell not only gathers voice but also obstructs noise.

Abstract: A mount assembly for a personal microphone is described. The mount assembly includes a spring-biased clip and a cage. The clip connects the assembly to an article of clothing. The cage is formed from an elongated bar made of rigid material. The bar is formed into a helix to define an enclosure that receives a microphone. The spirals of the helix may form a conical structure formed of spirals with increasing diameters. The cage may further include a base that secures the transmission cable of the microphone. The assembly protects the microphone from contact with objects, thus minimizes ambient and mechanical interference.

Abstract: In a condenser microphone having a microphone case formed by a casting, the resistivity of the surface of the microphone case is decreased surely, and the shielding function of the microphone case is made stable. In a condenser microphone in which a substrate including an audio output circuit connected to a condenser microphone unit is housed therein, and a cylindrical microphone case 10 mounted with an output connector is provided on one end side, the microphone case 10 being formed by casting, a conductive layer 10b having a lower resistivity than that of a raw material of the microphone case 10 is formed integrally on a casting surface 10a on the outer surface side of the microphone case 10.

Abstract: The present invention relates to an electromagnetically-countered display system including at least one wave source and at least one counter unit, where such a wave source irradiates harmful electromagnetic waves and the counter unit emits counter electromagnetic waves for countering the harmful waves therewith. More particularly, the present invention relates to various counter units for the electromagnetically-countered display system and to various mechanisms to counter the harmful waves with the counter units, e.g., by matching configurations of the counter units with those of the wave sources, by matching wavefronts of the harmful waves with those the counter waves, and so on. The present invention also relates to various methods of countering the harmful waves with such counter waves by source and/or wave matchings, various methods of providing the counter units for emitting the counter waves defining desired wave characteristics, and the like.

Abstract: A microphone array comprises a circuit board, a first microphone, and a second microphone. The circuit board comprises a first layer, a third layer, and a second layer sandwiched between the first and third layers. The first layer comprises a first shielding part with a fixed electric potential. The third layer comprises a second shielding part with the fixed electric potential. The second layer comprises an electrically conductive part running between the first and second shielding parts. The first microphone is attached to the first layer of the circuit board. The second microphone is attached to the first layer of the circuit board and electrically connected to the first microphone through the electrically conductive part of the second layer of the circuit board.

Abstract: A portable information terminal having high adaptability and high convenience with respect to operating environment, and by which comfortable and high-quality sounds can be reproduced is provided. A sound reproducing system in a portable information terminal 1, wherein the portable information terminal is provided with at least two acoustic loudspeakers 2a and 2b; and the at least two acoustic loudspeakers are driven simultaneously to compensate their reproduced sounds with each other.

Abstract: A perforated plate includes a plurality of holes divided into a first set of holes and a second set of holes. Each hole in the second set of holes has an area smaller than that of each hole in the first set; and the holes of the first and second sets are arranged with respect to one another to form a graphic pattern.

Abstract: It provides a condenser microphone such as a tiepin type including a small microphone unit, which is capable of effectively suppressing noise generation due to an electromagnetic wave. It covers the entirety from a microphone unit 12 to a connecting cable 22 with an integrally formed cover member 32 and connects the cover member 32 to a shielded wire 25 so as to electromagnetically shield the entirety.

Abstract: A temperature control apparatus used with an audio amp to prevent the audio amp from overheating and noise from being generated by effectively controlling a cooling fan of the audio amp includes a power supply to supply an electrical power, a power amp to amplify an input audio signal using the electrical power supplied from the power supply, a signal detector to detect the amount of the current flowing from the power supply during a predetermined time, a temperature sensor to sense a temperature over a predetermined level generated from the power amp, and a micro controller to control a cooling fan according to the amount of current output from the signal detector and/or the temperature sensed by the temperature sensor.

Abstract: A capacitor microphone in which a microphone case is made of a conductive material, has a microphone case connector connecting a cable connector at one end of a microphone cable to an internal circuit of a microphone, and is in electrical connection with the cable connector, and in which a conductive and elastic plate-like member is provided at a bottom of the microphone case connector, and is wedged by the cable connector and the microphone case connector. The cable connector and the microphone case connector being electrically connected via the conductive and elastic plate-like member.

Abstract: There is provided a low-cost loudspeaker system which can adjust attenuation and provide protection against an excessive input. Between input terminals and a loudspeaker unit is provided a serial circuit including a plurality of resistor elements. A switch is provided which can switch between connected and disconnected states of two points, which includes one or more resistor elements of the serial circuit therebetween, through an over-current protection element.

Abstract: A portable electronic device may have acoustic ports such as microphone and speaker ports. Acoustic devices such as microphones and speakers may be associated with the acoustic ports. An acoustic port may have an opening between an interior and exterior of the portable electronic device. The opening may be covered by a metal mesh. An acoustic fabric may be interposed between the metal mesh and the opening. The opening may be formed from a hole in a glass member having outer and inner chamfers. A microphone boot may be provided that forms front and rear radial seals with a housing of the device and a microphone unit respectively. The microphone boot may also form multiple face seals with the microphone unit. A speaker for the speaker port may be enclosed in a sealed speaker enclosure. The speaker enclosure may have a pressure-equalizing vent slit covered with an acoustic mesh.

Abstract: A package of a surface-mountable electronic component to be reflow-soldered to a circuit board at about 250° C. or more includes a case and a cover. The cover has a softening temperature lower than the reflow temperature, and the case has a softening temperature higher than the reflow temperature. In the package, softening the cover compensates for the stress on the bonded surfaces resulting from a difference in thermal expansion between the case and the cover caused during reflow.

Abstract: To provide a wireless microphone device that enables a circuit board, which is to be provided with an oscillation circuit, to be decreased in size without deteriorating radiation characteristics. The wireless microphone device is configured to include: a circuit board 5 that is sectioned into circuit areas 11a and 11b and makes the respective circuit areas function as antenna elements of a dipole antenna; an oscillation circuit 21 that is arranged in the circuit area 11b and generates a high frequency signal on the basis of a voice signal from a microphone 2a; a feeding path for feeding the high frequency signal to an electrically conductive layer 11 in the circuit area 11b through a feeding point positioned on the circuit area 11a side distant from the oscillation circuit 21; and a high frequency shield covering at least a part of the feeding path.

Abstract: It is an object of the present invention to provide a vibrating plate of a dynamic microphone and a method of manufacturing the vibrating plate. The vibrating plate includes a center dome and a sub-dome which includes a damping thin film having stable quality. Referring to FIG.

Abstract: A net made of material containing at least metal is bonded to a protector of a loud speaker, and hence shields electromagnetic waves. Electromagnetic interference can be prevented in an electronic apparatus such as a portable phone employing the loud speaker.

Abstract: An arrangement used in a speaker designed to restrict movement of at least a portion of the speaker cone, to inhibit the speaker cone from deforming, completely flipping inside out and/or to inhibit sticking of the speaker cone to a frame of the speaker. In one arrangement, there is provided a speaker insert that is designed to be inserted at least partially between the frame and the cone of a speaker. The speaker insert includes a body having a front face and a rear face, a frame opening positioned at least closely adjacent to a center region of the body, and a plurality of gas openings spaced from the primary opening and spaced from a periphery edge of the body. In another and/or additional arrangement, the speaker includes a modified speaker frame.

Abstract: In a gooseneck condenser microphone in which a condenser microphone unit is supported via a support pipe including a flexible pipe, the shield in a flexible pipe part is enhanced. In the condenser microphone including the condenser microphone unit and an output module section provided with a circuit board for outputting audio signals in a shield case, the condenser microphone unit being supported on the output module section via the support pipe including the flexible pipe, and the condenser microphone unit being connected electrically to the circuit board via a microphone cable 40 having a shield covering line 43, which is inserted in the support pipe, at least in a part of the microphone cable 40, which part being installed in the flexible pipe 31, 32, the shield covering line 43 is exposed, and the part of the microphone cable 40, which part being installed in the flexible pipe 31, 32, is brought into contact with the flexible pipe 31, 32 at many points.

Abstract: A loudspeaker grille for a wall-mount loudspeaker in a home environment is disclosed, which comprises a frame attached directly to a wall where a loudspeaker being mounted, the loudspeaker enclosure lending no support to the frame, and a cover stretched across the frame, the cover being substantially transparent to acoustic energy, wherein the cover provides protection as well as decoration to the underneath loudspeaker.

Abstract: A pop reduction filter can be properly replaced with a simple operation according to the use of a microphone. A wind shield including a shield body 20 made of an open-cell foam with a microphone insertion hole 30, the wind shield being directly put on a microphone M through the microphone insertion hole 30, the wind shield including a disk-like pop filter 40 detachably housed in the microphone insertion hole 30 so as to be orthogonal to the 0-degree direction sound pickup axis of the microphone M, the pop filter 40 being made of an open-cell foam different in foam density from the open-cell foam of the shield body 20.

Abstract: In a condenser microphone unit connected to an output module section via a dedicated microphone cord, the generation of noise caused by strong electromagnetic waves sent from a cellular phone etc. is effectively prevented by a simple configuration. In the condenser microphone unit in which a microphone capsule 10 is supported, for example, exchangeably on a support enclosure 20 and a microphone cord 30 consisting of a two-core shield covering line for connecting the condenser microphone unit to the output module section is pulled into the support enclosure 20, a shield covering line exposure portion 33a, in which a shield covering line 33 is stripped off, is provided in a portion in which the microphone cord 30 is pulled into the support enclosure 20, and a fixing member 40 formed into a doughnut shape is fixed to the shield covering line exposure portion 33a by staking, by which the shield covering line 33 is connected to the support enclosure 20 via the fixing member 40.

Abstract: A submersible loudspeaker assembly is provided. The loudspeaker assembly includes: a housing; a loudspeaker enclosed within the housing; an external diaphragm disposed adjacent to the loudspeaker. The external diaphragm is acoustically transparent when subject to ambient air pressure, but configured to flex towards the loudspeaker when submerged in water.

Abstract: A loudspeaker unit (2) of a loudspeaker system (1) is fitted to a cabinet (4). An absorbent (3) is disposed in a hollow chamber (R) inside the cabinet (4) and absorbs a gas inside the hollow chamber (R). A phase inverting mechanism (8) inverts the phase by resonating with a sound of a specific frequency radiated from the loudspeaker unit (2) into the hollow chamber (R) and radiates this sound to outside. The watertight means of the phase inverting mechanism (8) prevents invasion of moisture into inside the hollow chamber (R) from outside the cabinet (4) through the phase inverting mechanism (8).

Abstract: A multifunction speaker has a frame made of an insulation material and having a cylindrical portion, a pair of supporting springs secured to the frame and to a magnetic circuit for supporting the magnetic circuit. The magnetic circuit comprises a pole piece having a center pole and a flange on which an annular magnet is mounted. The flange of the pole piece has a pair of positioning projections projected from a periphery of the flange for positioning the magnet.

Abstract: In a gooseneck condenser microphone, the generation of noise caused by strong electromagnetic waves sent from a cellular phone etc. is prevented by adding a simple element.