Entries |
Document | Title | Date |
20080212808 | Diaphragm, diaphragm assembly and electroacoustic transducer - A slender-type diaphragm longer in a longitudinal direction and shorter in a transversal direction in relation to the longitudinal direction, has a base member and a slant member. The base member has a pair of extending members provided in parallel in the longitudinal direction as facing each other, and a curved section that protrudes toward a first side of the diaphragm in a vibration direction of the diaphragm from a first plane that includes the extending members, the vibration direction being perpendicular to the longitudinal and transversal directions. The slant member has a slant surface in relation to the first plane and connected to the base member in a manner that the slant member surrounds the base member in a second plane parallel to the first plane, the slant member having a curved surface in a cross section thereof in relation to a cross section of the base member in the transversal direction. | 09-04-2008 |
20090016551 | ELECTROSTATIC ELECTROACOUSTIC TRANSDUCERS - An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a second electrode configured to receive the audio signal, a first electret between the first electrode and the second electrode, the first electret including at least one dielectric layer containing electrostatic charges, a second electret between the first electrode and the second electrode, the second electret including at least one dielectric layer containing electrostatic charges, and a conductive layer sandwiched between the first electret and the second electret, the conductive layer, the first electret and the second electret being capable of vibratory motion relative to the first electrode and the second electrode based on the audio signal. | 01-15-2009 |
20090016552 | Electrostatic Loudspeakers - An electrostatic loudspeaker comprises a multi-layer panel ( | 01-15-2009 |
20090034761 | ELECTROSTATIC SPEAKER - An electrostatic speaker is constituted of a vibrator held between opposite electrodes via spacers. The vibrator has a plurality of surface projections and a plurality of backside projections, which project in opposite directions. When voltage differences occur between the opposite electrodes due to audio signals, electrostatic force is exerted on the vibrator, which thus vibrates in response to audio signals with a high sensitivity. The vibrator | 02-05-2009 |
20090060233 | ELECTROSTATIC ELECTROACOUSTIC TRANSDUCERS - An electrostatic electroacoustic device comprising a first electrode configured to receive an audio signal, a first conductive film configured to receive the audio signal, a first electret between the first electrode and the first conductive film, the first electret being capable of vibratory motion relative to the first electrode based on the audio signal, a second electrode configured to receive the audio signal, a second conductive film configured to receive the audio signal, the second conductive film being electrically isolated from the first conductive film, and a second electret between the second electrode and the second conductive film, the second electret being capable of vibratory motion relative to the second electrode based on the audio signal. | 03-05-2009 |
20090060234 | SPEAKER STRUCTURE - A speaker structure including a single electret vibrating film structure, a single metal electrode with a plurality of holes and a frame supporting member is provided. In an example, the electret vibrating film structure is formed by an electret film layer, an ultra-thin metal thin film electrode and an isolation layer stacked together, in which the ultra-thin metal thin film electrode is located between the electret film layer and the isolation layer. In another example, the electret vibrating film structure is formed by the electret film layer and a conductive electrode layer having oxide conductive materials. The frame supporting member is located between the electret vibrating film structure and the metal electrode for forming a space for the vibration of the electret vibrating film structure, so as to generate sounds. | 03-05-2009 |
20090067648 | STRUCTURE AND MANUFACTRURING METHOD OF ELECTROSTATIC SPEAKER - A structure of an electrostatic speaker and a manufacturing method thereof are provided. In the electrostatic speaker, an electrode and a vibrating film are disposed closely, and electrostatic force of the vibrating film may make the vibrating film contacting with the electrode such that the speaker would fail to generate the sound. Thus, the invention provides a spacer structure and a manufacturing method thereof. Various patterning or height changes and other designed are performed to place the spacer between the electrode and the vibrating film, so as to prevent the electrode from contacting with the vibrating film. The disposition of the spacer is expected to enhance frequency response or sound volume of the speaker. | 03-12-2009 |
20090087002 | ELECTROSTATIC SPEAKER - An electrostatic speaker is constituted of a vibrator, conductive cloths, and elastic members, which are laminated together and woven together using strings. Since all the constituent elements are restrained in positioning by strings, the overall structure thereof is not substantially changed even when the electrostatic speaker is deformed in shape by bending or curving, wherein it is possible to secure the prescribed positional relationship between the constituent elements, which are not deviated in positioning. It is possible to introduce a sheet composed of a thermoplastic resin, which holds the vibrator and elastic members therein. The conductive cloths can be replaced with film electrodes, each of which is formed such that a conductive polymer layer is formed on a base film composed of a thermoplastic resin. | 04-02-2009 |
20090169036 | ELECTRET MATERIALS, ELECTRET SPEAKERS, AND METHODS OF MANUFACTURING THE SAME - A speaker comprises at least one electrode electrically coupled with an audio signal input and a film comprising at least one electret layer. The film is configured to interact with the electrode in response to an audio signal supplied by the audio signal input and to vibrate to generate sound waves. The electret layer is formed from a polymer-containing solution. | 07-02-2009 |
20090245547 | ELECTRET MATERIALS, ELECTRET SPEAKERS, AND METHODS OF MANUFACTURING THE SAME - A method of making a nonfluoropolymer electret film is provided. The method may include: providing a polymer-containing solution, the polymer-containing solution comprising at least one polymer material, at least one solvent, and at least one surfactant, spreading the polymer-containing solution to provide a wetting polymer film, removing at least a portion of the solvent in the wetting polymer film to provide a polymer film, and conducting a Corona charging to the polymer film to form the electret film. | 10-01-2009 |
20090257606 | ULTRASONIC SPEAKER AND PROJECTOR - An ultrasonic speaker including: a vibration film having a conductive layer; a pair of fixed electrodes provided oppositely to respective surfaces of the vibration film; and an ultrasonic transducer that causes the vibration film to generate sound waves by applying a DC bias voltage to the conductive layer of the vibration film while applying an alternating signal between the pair of fixed electrodes, and outputs the sound waves generated by the vibration film from two sound wave output surfaces via through-holes provided in each of the pair of fixed electrodes. The two sound wave output surfaces of the ultrasonic transducer are disposed in a direction intersecting with a sound wave emitting direction at right angles. | 10-15-2009 |
20090262959 | METHOD FOR MANUFACTURING A LOUDSPEAKER HAVING A VOICE COIL ASSEMBLY - A method for manufacturing a loudspeaker having a voice coil assembly includes the steps of: producing a flat voice coil; placing the voice coil into an injecting mold of a vibrating slab; forming a locating section to secure the voice coil; and assembling a loudspeaker by coupling the vibrating slab with a membrane together to produce a better sound quality. Furthermore, upper suspending arms provided on respective sides of the vibrating slab may be cut to lower the rigidity character of the vibrating slab and to increase the vibrating effect. | 10-22-2009 |
20090262960 | SPEAKER - A speaker is disclosed. A speaker includes a fixing part ( | 10-22-2009 |
20090262961 | VIBRATING SYSTEM OF PANEL FORM ELECTRODYNAMIC LOUDSPEAKER - The present invention discloses a vibrating system of flat-plate electrodynamic loudspeaker, which comprises a flat-plate vibrating plate and a voice coil mounted under the vibrating plate. The vibrating system is characterized in that the thickness of the vibrating plate within the voice coil is not more than ½ of that of the vibrating plate outside the voice coil. Alternatively, the vibrating plate within the voice coil can be replaced by a vibrating diaphragm. The thin plate within the voice coil according to the present invention can provide compensation for high frequency response, widen frequency band, and reduce the overall height of voice coil and vibrating plate. According to the present invention, a thin flat-plate loudspeaker that almost cover the full audio frequency bands can be designed, thereby producing a thin flat-plate full frequency speaker system to meet the demand of market. | 10-22-2009 |
20090279720 | SPEAKER - A speaker is disclosed. A speaker includes a fixing part ( | 11-12-2009 |
20090304212 | FLEXIBLE ELECTRET TRANSDUCER ASSEMBLY, SPEAKER, AND METHOD FOR FABRICATING FLEXIBLE ELECTRET TRANSDUCER ASSEMBLY - A flexible electret transducer assembly including an electrical backplate and a membrane made of an electret material is disclosed. A plurality of spacers is formed on a surface of the electrical backplate in a longitudinal or latitudinal direction, and the spacers are used for supporting a vibrating room of the membrane. A working area of the membrane is formed between adjacent spacers, and in each of the working area, the space between the electrical backplate and the membrane is smaller than that in a conventional electrostatic speaker. The spacers between the electrical backplate and the membrane are mass produced through a stamping process. Thereby, an accurate space between the electrical backplate and the membrane can be maintained and accordingly the audio quality can be improved. In addition, a speaker including the flexible electret transducer assembly and a method for fabricating the flexible electret transducer assembly are also disclosed. | 12-10-2009 |
20090323990 | SPEAKER - A speaker is disclosed. A speaker includes a fixing part ( | 12-31-2009 |
20100008525 | Acoustic Actuator Plate Structure - Acoustic actuator plate structures are used in acoustic applications. The acoustic actuator plate structure according to the invention contains an electret material and comprises a structurally weaker electret layer ( | 01-14-2010 |
20100027817 | Controlled leakage omnidirectional electret condenser microphone element - An omnidirectional electret condenser microphone element with improved low frequency background ambient acoustical noise rejection is provided. The omnidirectional electret condenser microphone element includes a plurality of passageways in acoustic series that couple at least one acoustic aperture of the microphone element to an acoustic cavity formed within the microphone element. At least one of said plurality of passageways is of a predefined size that is determined to provide the desired response roll-off within a predefined frequency range. In at least one preferred configuration, the roll-off resulting from the plurality of passageways is greater than 2.0 dB between 300 and 100 Hz. In at least one alternate preferred configuration, the roll-off resulting from the plurality of passageways is greater than 3.0 dB between 300 and 100 Hz. | 02-04-2010 |
20100027818 | ELECTRONIC DEVICE AND ELECTRO-ACOUSTIC TRANSDUCER THEREOF - The invention provides an electronic device and an electro-acoustic transducer thereof. The electronic device includes a main body and an electro-acoustic transducer carried by the main body. The electro-acoustic transducer includes a first electret diaphragm, a second electret diaphragm and a plate. The first electret diaphragm generates vibrations according to a first electrical signal and the second electret diaphragm generates vibrations according to a second electrical signal. The plate includes a plurality of holes formed thereon and is disposed between the first electret diaphragm and the second electret diaphragm. Additionally, the electronic device further includes a decorative layer formed on the first or the second electret diaphragm. | 02-04-2010 |
20100067720 | SPEAKER DEVICES AND METHODS OF MAKING THE SAME - A speaker device including a transparent speaker and a light source module is provided. The transparent speaker is thin, soft, and has a low driving voltage. Light is emitted from a front side of the speaker panel, and transmitted in the same direction as the sound. Thus, the light is emitted along with the sound. The speaker device can be used as an indoor wall-painting or as a large advertisement poster for more visual effects to the viewer. | 03-18-2010 |
20100092012 | ELECTRO-ACOUSTIC TRANSDUCER - An electro-acoustic transducer is disclosed. The electro-acoustic transducer includes an electret diaphragm, an orifice plate and a plurality of dividing structures. The dividing structures, disposed between the electret diaphragm and the orifice plate, are cross-shaped. Each of the dividing structures includes two extending portions intersecting with each other. | 04-15-2010 |
20100092013 | ELECTRO-ACOUSTIC TRANSDUCER - An electro-acoustic transducer is disclosed. The electro-acoustic transducer includes an electret diaphragm, an orifice plate and a plurality of dividing structures. Each of the dividing structures, disposed between the electret diaphragm and the orifice plate, includes at least one main portion, and the number of the main portion is a positive integer. When the number of the main portion is larger than one, the main portions are respectively connected to a center and extended radially from the center. | 04-15-2010 |
20100104116 | FLAT SPEAKER UNIT AND SPEAKER DEVICE THEREWITH - A reliable flat speaker unit and a speaker device with the same are provided herein. A conductive electrode of a vibrating membrane of the speaker unit is disposed on both utmost sides of the speaker unit to isolate the speaker unit from environmental moisture, which can significantly improve the reliance of the speaker device. A barrier layer can optionally be disposed on the external side of the conductive electrode to further isolating the speaker unit from moisture, which can improve the reliance and the lifetime of the speaker device. In an embodiment, at least a getter is disposed inside the flat speaker unit to absorb moisture therein. The speaker unit at least includes a electret vibrating membrane with a conductive electrode, a plurality of supporting members, and a electrode structure with a plurality of holes. | 04-29-2010 |
20100158284 | ASSEMBLY STRUCTURE OF A FLAT SPEAKER - An assembly structure of flat speaker including at least two speaker units and one connecting structure is provided. Each speaker unit includes a first electrode, a vibrating film, and a second electrode. The connecting structure includes two conductive layers, and a first insulating layer. A first conductive layer is connected the first electrode through a contact area, and each has a first length and a third length parallel to the contact area. A second conductive layer is connected the second electrode through a contact area, and each has a second length and a fourth, a fifth length parallel to the contact area. The third length is less than or equal to a sum of the first lengths of the speaker units. A sum of the third, the fourth, and the fifth length is less than or equal to a sum of the first and second lengths. | 06-24-2010 |
20100158285 | ULTRASONIC TRANSDUCER FOR PARAMETRIC ARRAY - An ultrasonic transducer having a reduced cost of manufacture. The ultrasonic transducer includes a first insulative retaining layer, a second insulative retaining layer, and a vibrator film layer sandwiched between the first and second retaining layers. The first retaining layer includes a first plurality of apertures formed therethrough, and the second retaining layer includes a second plurality of apertures formed therethrough, in which the second apertures are substantially in registration with the first apertures. The ultrasonic transducer further includes a first cover portion having a plurality of spring/backplate assemblies connected thereto, and a second cover portion. The combination of the first retaining layer, the vibrator film layer, and the second retaining layer is sandwiched between the first and second cover portions of the ultrasonic transducer. The laminated construction of the ultrasonic transducer allows the formation of an array of ultrasonic film transducers using a single piece of ultrasonic vibrator film. | 06-24-2010 |
20100158286 | ULTRASONIC TRANSDUCER FOR PARAMETRIC ARRAY - An ultrasonic transducer having a reduced cost of manufacture. The ultrasonic transducer includes a first insulative retaining layer, a second insulative retaining layer, and a vibrator film layer sandwiched between the first and second retaining layers. The first retaining layer includes a first plurality of apertures formed therethrough, and the second retaining layer includes a second plurality of apertures formed therethrough, in which the second apertures are substantially in registration with the first apertures. The ultrasonic transducer further includes a first cover portion having a plurality of spring/backplate assemblies connected thereto, and a second cover portion. The combination of the first retaining layer, the vibrator film layer, and the second retaining layer is sandwiched between the first and second cover portions of the ultrasonic transducer. The laminated construction of the ultrasonic transducer allows the formation of an array of ultrasonic film transducers using a single piece of ultrasonic vibrator film. | 06-24-2010 |
20100177914 | ELECTROSTATIC THIN-FILM SOUND TRANSDUCER, AND METHOD FOR THE PRODUCTION THEREOF - There is described an electrostatic film sound transducer, which comprises at least two laterally spaced-apart flat electrodes and at least one flat, electrically conductive layer ( | 07-15-2010 |
20100215197 | FLEXIBLE ELECTRET ACTUATORS AND METHODS OF MANUFACTURING THE SAME - A flexible actuator comprises a thin film and at least one first enclosure with at least one first bendable element coupled to the first enclosure. The thin film may comprise a conductive layer and a first electret layer over a first surface of the conductive layer. The thin film is configured to be bendable. The first enclosure have a first electrode layer as part of the first enclosure. The first enclosure is provided over the first electret layer with the first electrode layer being spaced apart from the first electret layer. The first electrode layer is coupled with a first terminal of an audio signal input. The thin film is configured to interact with the first enclosure in response to audio signals supplied by the audio signal input and to generate sound waves. | 08-26-2010 |
20100278363 | Electrostatic Speaker having Ventilative Diaphragm - The present invention relates to an electrostatic speaker including a fixed electrode and a diaphragm that is arranged with a predetermined gap from the fixed electrode and has a plurality of ventilation holes. The ventilative diaphragm reduces air resistance caused by the ground effect between the fixed electrode and the diaphragm, and increases the sound pressure output from the speaker. As a result, the ventilative diaphragm makes it possible to obtain a uniform frequency reproduction characteristic over the entire frequency range. In particular, when the diaphragm is made from Korean paper, it is possible to effectively reduce the ground effect occurring between the fixed electrode and the diaphragm due to the air permeable characteristic of the Korean paper and the air resistance due to a surge input signal, while satisfying physical characteristics of the existing diaphragm. In addition, since the Korean paper has high formability, it is possible to easily form the diaphragm in a hemispherical shape. As a result, it is possible to radially and uniformly spread the sound by a simple structure. | 11-04-2010 |
20100303263 | Electrostatic Speaker System - The invention relates an electrostatic speaker system comprising—a high voltage switching power amplifier,—an extraction filter having an input coupled to an output of the high voltage switching amplifier, and—an electrostatic speaker element having a capacitive load and an input coupled to an output of the extraction filter. The combination of the extraction filter and capacitive load form a filter circuitry having at least a first filter stage and a second filter stage. The first filter stage comprising a RLC circuit having a resonant frequency ωO and a quality factor Q>½ and wherein the second filter stage being a low pass filter comprises at least one electrical element for damping a signal component at the resonant frequency of the RLC circuit at the output of the extraction filter. | 12-02-2010 |
20100310098 | ELECTRET TRANSDUCER WITH SOLAR POWER - The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal. | 12-09-2010 |
20110007914 | ELECTROSTATIC LOUDSPEAKER - An electrostatic loudspeaker includes a backplate having a metal film acting as one electrode of a capacitor and defining a number of sound apertures therein; a diaphragm insulatively spaced a distance from the backplate to form the capacitor; the diaphragm comprising a metal film acting as the other electrode of the capacitor; a back chamber having a substrate and an insulative spacer for joining edge portions of the diaphragm and the substrate; a driving circuit element for converting electrical signals from exterior input pads into driving signals to drive the diaphragm to vibrate and sound; the driving circuit element being mounted on an inner surface of the substrate and being accommodated in the back chamber; and a first, second and third connection paths for respectively electrically connecting the driving circuit element with the two electrodes of the capacitor, and the exterior input pads. An electrostatic loudspeaker with two backplates is also disclosed. | 01-13-2011 |
20110019845 | DIRECTING SOUND FIELD OF ACTUATOR - The invention relates to a plate-like electrostatic actuator which comprises at least one plate-like stator with an electrode formed on its surface and at least one moving diaphragm, and in which a signal is transmitted to the electrode along a signal line. In the solution of the invention, the delay directing the sound field of the actuator is formed at least partly of an RC circuit composed of components of the actuator. | 01-27-2011 |
20110064251 | SPEAKER AND VIBRATOR ASSEMBLY FOR AN ELECTRONIC DEVICE - Vibration generation for an electronic device is performed by a speaker and vibrator assembly. In an audio mode, the assembly may be used to output audio, such as ringtones, alerts, music, and so forth. In a vibration mode, speakers of the assembly drive movement of a weight. The movement of the weight results in user-detectable vibration of the electronic device. Also, audio and vibration may be output at the same time by using a signal that includes an audio component and a signal that results in movement of the weight. | 03-17-2011 |
20110075868 | ELECTROSTATIC SPEAKER - An electrostatic speaker is constituted of a diaphragm and an electrode which are disposed opposite to and/or slightly distanced from each other. A first conductive layer is formed on a first surface of the diaphragm whilst a second conductive layer is formed on a second surface of the diaphragm, wherein the first surface is disposed opposite to the second surface. A holding member or installation equipment holds a holding region formed at a predetermined position of the main body of an electrostatic speaker. The first conductive layer is formed on the first surface of the diaphragm while circumventing the holding region, and the second conductive layer is formed on the second surface of the electrode while circumventing the holding region. A through-hole can be formed to run through the diaphragm and electrode in the holding region of an electrostatic speaker. | 03-31-2011 |
20110075869 | ELECTROSTATIC SPEAKER - An electrostatic speaker is constituted of upper/lower electrodes, upper/lower cushion materials, and a diaphragm. Cutouts are formed in the upper/lower electrodes, upper/lower cushion materials, and diaphragm, wherein they are shifted in position such that a part of the diaphragm and a part of the lower electrode are exposed and seen through those cutouts to horizontally adjoin in the cutout of the upper electrode. The electrostatic speaker is driven via a clip having electrodes in response to audio signals, wherein drive voltages are applied to each of the upper/lower electrodes and the diaphragm. | 03-31-2011 |
20110091053 | VIBRATORY PLATE, ELECTRO-ACOUSTIC CONVERTER, MANUFACTURING METHOD OF VIBRATORY PLATE AND MOLDED BODY - A vibratory plate includes a first layer ( | 04-21-2011 |
20110249834 | ELECTRET MATERIAL AND ELECTROSTATIC-TYPE ACOUSTIC TRANSDUCER - An electret material having excellent charge retentivity against heat is provided. The electret material | 10-13-2011 |
20110255719 | ELECTROACOUSTIC APPARATUS WITH OPTICAL ENERGY CONVERSION FUNCTION - An electroacoustic apparatus with an optical energy conversion function is provided. The electroacoustic apparatus includes an optical energy converter for converting optical energy into electrical power. The electroacoustic apparatus further includes a signal generator and a flat speaker. The signal generator receives a signal from a sound source and generates a sound signal according to the received signal. The signal generator sends the sound signal to the flat speaker, and the flat speaker makes a sound according to the sound signal. Aforementioned operations are all performed by using the electrical power generated by the optical energy converter or a power stored therein. | 10-20-2011 |
20110255720 | ELECTRET DIAPHRAGM AND SPEAKER USING THE SAME - An electret diaphragm and a speaker using the same are provided. The electret diaphragm includes an electret layer, a bonding layer adhered to a surface of the electret layer, and an aluminum (Al) electrode layer adhered on the bonding layer. The electret layer at least includes ethylene group polymer. A material of the bonding layer is ethylene-ethyl-acrylate (EEA) or ethylene-vinyl acetate (EVA). | 10-20-2011 |
20110255721 | FLAT SPEAKER UNIT AND SPEAKER DEVICE THEREWITH - A flat speaker unit is provided herein. The flat speaker unit includes a first porous electrode, a second porous electrode, and a vibrating membrane with an electret layer disposed there between. In one embodiment, a plurality of supporting members may be configured between the vibrating membrane and the first porous electrode, or between the vibrating membrane and the second porous electrode. In one embodiment, a flat speaker device is provided with at least two flat speaker unit stacked together. By electrically connecting two ends of a signal source respectively to the first and second porous electrodes, or, in another embodiment, electrically connecting one end of the signal source to both of the first and second porous electrodes and connecting another end of the signal source to the vibrating membrane, a sound with low THD is generated accordingly from the flat speaker unit. | 10-20-2011 |
20110268297 | ELECTROSTATIC SPEAKER - An electrostatic speaker including a frame; a first electrode installed at a first end of the frame; a second electrode installed at a second end of the frame to be at a predetermined distance apart from the first electrode; a suspension which is arranged between the second electrode and the first electrode and is elastically installed inside the frame; and a diaphragm assembly which is supported by the suspension and has a multilayer structure. The electrostatic speaker adopts a dual electrode structure, has the multilayer structure formed inside the diaphragm assembly, and is provided with a driving chip that applies a bias voltage to the diaphragm assembly by rectifying an audio signal after applying a driving signal that has amplified the audio signal to the dual electrodes. Thus, the invention does not require any external power, and is also capable of maintaining relatively high sensitivity by enhancing the charge density. | 11-03-2011 |
20110293121 | VIBRATING MEMBER AND ELECTROACOUSTIC TRANSDUCER HAVING SAME - An electroacoustic transducer includes a frame defining a hollow space, and an elastic member mounted on the frame. The elastic member includes a circular plane lamina and a plurality of elastic arms extending outwardly from a circumference of the circular plane lamina. A diaphragm includes a vibrating film mounted with the circular plane lamina, and an edge damper integrally formed with an outer periphery of the vibrating film. A voice coil is attached below the vibrating film and electrically connected to the circular plane lamina. At least two through holes are formed between an outer periphery of the circular plane lamina and an inner side of the voice coil for balancing the air pressure of the air below the diaphragm. | 12-01-2011 |
20120002826 | ELECTRET ELECTROACOUSTIC TRANSDUCER - An electret electroacoustic transducer comprises first porous complex electrode, support member, electret vibrating film and first adjustment member. Support member is configured on the first porous complex electrode. The fixed portion of the electret vibrating film is fixed on the support member. Adjustment member is set between the first porous complex electrode and the electret vibrating film. A sectional difference is formed between the fixed portion and the adjusted portion of the electret vibrating film. | 01-05-2012 |
20120014543 | ELECTROSTATIC SPEAKER AND MANUFACTURING METHOD THEREOF AND CONDUCTIVE BACKPLATE OF THE SPEAKER - An electrostatic speaker and a method for manufacturing the speaker are disclosed. Said speaker comprises a vibrating film; an electrode portion disposed on a surface of the vibrating film and joined with the vibrating film; and a conductive backplate spaced from the electrode portion by a distance, the conductive backplate forming a plurality of holes, the vibrating film being deformed and vibrated to generate and release a sound through the holes due to a variation of an electric field generated between the conductive backplate and the electrode portion, wherein the conductive backplate is covered by a polymer layer serving as a protective film. The covering polymer layer on the conductive backplate is capable of improving the stability of the electrostatic speaker and increasing its lifespan. | 01-19-2012 |
20120033836 | SPEAKER AND ELECTRONIC DEVICE - An electronic device and a speaker are provided. The speaker includes a housing, a magnet, a vibrating element, a circuit board and a electromagnetic inductor. The magnet is disposed in the housing. The vibrating element is disposed in the housing to vibrate relatively to the magnet for sounding. The electromagnetic inductor is disposed on the vibrating element for inducting a magnetic field of the magnet to generate electricity. The circuit board is disposed at the housing and has two audio input terminals, two audio output terminals, two power input terminals and two power output terminals. The audio input terminals are electrically connected to the audio output terminals, respectively. The power input terminals are electrically connected to the power output terminals, respectively. The vibrating element is electrically connected to the audio output terminals. The electromagnetic inductor is electrically connected to the power input terminals. | 02-09-2012 |
20120033837 | SPEAKER UNIT - A speaker unit is realized which directly drives a vibration plate having a low density, light weight, yet sufficient rigidity with a digital audio signal, and can thereby transmit vibration of a voice coil thereof to a carbonaceous acoustic vibration plate without loss. The present invention provides a digital speaker unit including a speaker body ( | 02-09-2012 |
20120076330 | APPARATUS AND METHODS FOR GENERATING PRESSURE WAVES - Actuator apparatus for generating a physical effect, at least one attribute of which corresponds to at least one characteristic of a digital input signal sampled periodically in accordance with a clock, the apparatus comprising at least one array of moving elements each constrained to travel alternately back and forth along a respective axis in response to an alternating electromagnetic force applied to the array of moving elements, at least one latch operative to selectively latch at least one subset of said moving elements in at least one latching position thereby to prevent the individual moving elements from responding to the electromagnetic force, an electromagnetic field control system operative to receive the clock and, accordingly, to control application of the electromagnetic force to the array of moving elements, and a latch controller operative to receive the digital input signal and to control the latch accordingly. | 03-29-2012 |
20120082327 | VIBRATION PLATE, SPEAKER UNIT AND PORTABLE INFORMATION TERMINAL - An edge portion includes a center portion, one end and an other end. As seen in a cross section of a vibration plate in the radial direction, the center portion, the one end and the other end each are formed in a circular arc such that the edge portion forms a convex so as to protrude in a direction in which the protruding shape protrudes. The radius of curvature of the circular arc of the center portion is not less than the radius of curvature of the circular arc of each of the one end and the other end. Accordingly, a vibration plate allowing a decrease in the lowest resonance frequency while suppressing the edge portion from being brought into a tensioned state, a speaker unit provided with the vibration plate and a portable information terminal can be provided. | 04-05-2012 |
20120106761 | DRIVING INTERFACE DEVICE ADAPTIVE TO A FLAT SPEAKER - A driving interface device adaptive to a flat speaker is introduced herein. The driving interface device is coupled with an external sound source for receiving sound signals, and boosts voltage levels of the sound signals to drive the thin flat speaker without using an external power source. In one embodiment, an impedance component is provided in the driving interface device for coupling to the external sound source, so as to drive the flat speaker. | 05-03-2012 |
20120121112 | SPEAKER - A speaker includes a base, a diaphragm, a separating module, a first electrode set and a second electrode set. The base and a porous structure are formed a cavity. The diaphragm is disposed in the cavity and includes a first part and a second part. The separating module is located in the cavity and contacts the diaphragm to separate the cavity into the first and the second chambers. The first electrode set disposed in the first chamber is connected to a first sound source signal, such that the first part of the diaphragm is vibrated and the first sound source signal is exported from the first chamber. The second electrode set disposed in the second chamber is connected to a second sound source signal, such that the second part of the diaphragm is vibrated and the second sound source signal is exported from the second chamber. | 05-17-2012 |
20120148074 | Electrostatic Loudspeaker System - An electrostatic loudspeaker (ESL) system includes a damping screen adjacent an outside surface of at least one of its stators to reduce distortion of acoustic output rendered by the loudspeaker's diaphragm, including effects of resonance of the diaphragm. A resilient excursion limiter placed adjacent an inside surface of at least one of the stators prevents contact of the diaphragm with the stator. A conductive portion of the diaphragm is printed with a conductive ink layer that includes conductive nanofibers. The loudspeaker system includes a dipole-radiating ESL element, an unbaffled or partially baffled dynamic loudspeaker and a baffled monopole-radiating dynamic loudspeaker (subwoofer), all essentially co-planar. The unbaffled or partially baffled dynamic loudspeaker provides a smooth transition in sound between the dipole-radiating ESL element and the monopole-radiating subwoofer. The ESL system includes two or more invertedly-driven ESL elements of different sizes, each element handling a different range of frequencies. | 06-14-2012 |
20120170778 | Acoustic transducer - An acoustic transducer includes a diaphragm defining a center portion and a supporting portion surrounding the center portion and a coil attached to the diaphragm and defining a pair of leading wires. The center portion defines a lower surface connected to the coil, an upper surface opposite to the lower surface, and at least a pair of protrusion portions extending from the lower surface toward the upper surface for receiving the leading wires of the coil. | 07-05-2012 |
20120281862 | ELECTRET TRANSDUCER WITH SOLAR POWER - The present invention provides an electret transducer with solar power. The provided electrets transducer includes a solar power supply device, an amplifier circuit having a first input terminal coupled to the solar power supply device and a second input terminal coupled to an audio signal input terminal, and an electret loudspeaker coupled to an output terminal of the amplifier circuit. The amplifier circuit receives a first voltage level via the first input terminal and boosts the first voltage level to a second voltage level, and receives a first audio signal via the second input terminal and amplifies the first audio signal to a second audio signal. The electret loudspeaker coupled to the output terminal of the amplifier circuit receives the second audio signal and outputs a sound corresponding to the second audio signal. | 11-08-2012 |
20130044905 | ELECTRET LOUDSPEAKER DEVICE - An electret loudspeaker device including a diaphragm, a first perforated electrode and a first spacer is provided. The diaphragm has an electret layer and an electrode layer. The first perforated electrode is stacked on a side of the diaphragm near the electret layer, and has multiple holes. The first spacer is stacked between the diaphragm and the first perforated electrode, and includes a first distribution area and plural second distribution areas. The first distribution area has first openings penetrating through the first spacer, and each first opening has a first opening space volume between the diaphragm and the first perforated electrode. Each second distribution area has second openings penetrating through the first spacer, and each second opening has a second opening space volume between the diaphragm and the first perforated electrode. A difference between the first and the second opening space volumes is greater than 10%. | 02-21-2013 |
20130044906 | ELECTRET LOUDSPEAKER DEVICE - An electret loudspeaker device including a diaphragm, a first perforated electrode and a first spacer is provided. The diaphragm includes a first electret, a second electret, a polymer layer and an electrode layer. At least one layer of the first electret or the second electret is formed by expanded polytetrafluoroethylene. The second electret is stacked on one side of the first electret, while the electrode layer is stacked on the opposite side of the first electret. The polymer layer is made of a hydrophobic material and is disposed on the second electret. The first perforated electrode is stacked on a first spacer and close to the polymer layer. The first spacer disposed to between the diaphragm and the first perforated electrode supports the first perforated electrode over the diaphragm and defines a first chamber. A fabrication method of the electret loudspeaker device is also provided. | 02-21-2013 |
20130064401 | TRANSDUCER MODULE - The present invention is directed to a transducer module, which includes an actuator that is directly or indirectly coupled to a vibration plate. The transducer module includes a plastic damper that elastically secures the vibration plate to a frame. | 03-14-2013 |
20130089224 | ELECTROSTATIC LOUDSPEAKER WITH MEMBRANE PERFORMING OUT-OF-PLANE DISPLACEMENT - An electrostatic loudspeaker comprises a membrane structure and an electrode structure. The membrane structure comprises a central membrane portion and a circumferential membrane portion. The electrode structure is configured to electrostatically interact with the membrane structure for causing a movement of the membrane structure along an axis of movement. The electrode structure comprises a circumferential electrode portion and an opening, the circumferential electrode portion being substantially aligned to the circumferential membrane portion and the opening being substantially aligned to the central membrane portion with respect to a direction parallel to the axis of movement. In an end position of the movement of the membrane structure, the central membrane portion is configured to extend at least partially through the opening. A method for operating an electrostatic loudspeaker and a method for manufacturing an electrostatic loudspeaker are also described. | 04-11-2013 |
20130101145 | TRANSDUCER MODULE - The present invention is directed to a transducer module, which includes at least two actuators with a same physical dimension. At least two support members correspond to the actuators, and are used to transfer inertial force to a vibration plate. The two support members are disposed between neighboring actuators, and between the actuator and the vibration plate, respectively. | 04-25-2013 |
20130108086 | ELECTROSTATIC LOUDSPEAKER | 05-02-2013 |
20130108087 | ELECTROSTATIC LOUDSPEAKER | 05-02-2013 |
20130129121 | ELECTROSTATIC LOUDSPEAKER AND METHOD OF PRODUCING ELECTROSTATIC LOUDSPEAKER - An electrostatic loudspeaker includes: a first electrode; a second electrode which is opposed to the first electrode; and a vibrating member which is disposed between the first electrode and the second electrode and in which an insulation membrane and a conductive membrane are stacked, the insulation membrane being disposed on both end faces of the vibrating member in a direction of the stacking. | 05-23-2013 |
20130156237 | HIGH POWER MICRO-SPEAKER - Disclosed is a high power micro-speaker having a damper plate. More particularly, disclosed is a high power micro-speaker in which a damper plate has an opening through which a voice coil can pass, and the voice coil having passed through the opening is attached to a lower surface of a vibrating plate that is located above the damper plate, which provides an increased vibrating region. As such, enhanced output power of the micro-speaker is accomplished by increasing a height of the voice coil, or a slimmer design of the micro-speaker is accomplished by reducing a height of a frame. | 06-20-2013 |
20130170677 | SPEAKER UNIT - Disclosed herein is a speaker unit, including: a magnetic circuit having a magnet and a coil; a vibrating plate adapted to be vibrated by a drive force of the magnetic circuit; and a frame having a circuit mounting portion to which the magnetic circuit is mounted, an edge mounting portion to which an edge of the vibrating plate is mounted, and plural leg portions through which the circuit mounting portion and the edge mounting portion are coupled to each other and which are provided in spaced relation to one another in a circumferential direction, wherein irregularity portions are provided in the plural leg portions, respectively, and forms of the irregularity portions are made different from each other at least in two of the leg portions. | 07-04-2013 |
20130177184 | ULTRASONIC VIBRATOR - A mobile electronic device including a casing, a signal generator housed within the casing, for generating a signal that has a frequency higher than the human audible range, at least one speaker housed within the casing and coupled with the signal generator, for producing analog output from the signal generated by said signal generator, wherein the analog output produced by the at least one speaker is (i) substantially inaudible, and (ii) causes the casing to vibrate at a frequency approximately equal to a resonant frequency of the casing. | 07-11-2013 |
20130195293 | CROSSOVER DOUBLE SPEAKER - Disclosed is a crossover double speaker having a small speaker and a large speaker on the upper side and on the lower side thereof. The crossover double speaker includes a cover integrally formed on the outer circumference of a flange of the yoke; a frame disposed below the cover; a first speaker unit including a first magnet disposed in a first speaker space, a first vibration plate arranged over the first magnet, and a first voice coil inserted into a first air gap; and a second speaker unit including a second magnet disposed in a second speaker space, a second vibration plate arranged between the yoke and the frame, and a second voice coil inserted into a second air gap. The yoke has sound release holes to output the sound generated from the second speaker unit in the direction of the first speaker unit. | 08-01-2013 |
20140010388 | CAPACITIVE TRANSDUCER, CAPACITIVE TRANSDUCER MANUFACTURING METHOD, AND OBJECT INFORMATION ACQUISITION APPARATUS - Provided is a capacitive transducer having broadband frequency characteristics. The capacitive transducer includes an element which has multiple kinds of cells, each cell including: a first electrode; a vibrating film including a second electrode, the second electrode being opposed to the first electrode with a gap; and a support portion that supports the vibrating film so as to form the gap. The multiple kinds of cells have different ratios of an area of one of the first electrode and the second electrode to an area of the gap when viewed from a normal direction of the vibrating film. The first electrodes or the second electrodes in the multiple kinds of cells are electrically connected together. | 01-09-2014 |
20140044287 | FLAT TYPE SPEAKER HAVING DAMPER-LEAD PLATE OF PCB VOICE COIL PLATE - The present invention relates to a flat type speaker, and more particularly, to a flat type speaker having a damper-lead plate of a PCB voice coil plate, which improves the quality deterioration due to the reduction of production process and the disconnection of a lead wire, by being attached to the top of a voice coil plate, increases vibration efficiency, and eliminates the lead wire connection of the voice coil. The flat type speaker having a damper-lead plate of a PCB voice coil plate according to the present invention comprises: a pair of magnetic bodies having a magnet and a yoke formed side by side, separated at a predetermined interval; a voice coil plate inserted in the space between the magnetic bodies, and having formed thereon a voice coil with a spiral pattern printed thereon; a damper-lead plate having a first damper-lead plate and a second damper-lead plate, which are physically separated, each having +, − terminals formed on the front ends thereof, wherein the first and the second damper-lead plates are each equipped with a coil plate spline, which adheres to the upper end of the voice coil plate, and at least one wing spline having one end thereof connected to the coil plate spline and the other end connected to the + or − terminals; and a vibration plate, which vibrates from the vibration received from the voice coil plate, while being contacted to the upper end portion of the damper-lead plate. | 02-13-2014 |
20140064525 | Vibrating panel device for electromagnetic vibrator and its manufacture method - The present invention includes a vibrating panel device for an electromagnetic vibrator, which includes at least one vibrating panel device. The vibrating panel module includes a base, a vibrating panel and an upper suspension, wherein an inner edge and an outer edge of the upper suspension are respectively connected with the base and the vibrating panel, and form an integrated whole body. Further, two vibrating panel modules are fixedly connected in opposite directions to form the vibrating panel device. By unique structures of the vibrating panel device, when the voice coil drives the vibrating panel to actuate, shaking of the vibrating panels is offset due to interactions between a pair of the suspensions and a pair of the vibrating panels, in such a manner that the voice coil drives the vibrating panel to process vertical up-and-down stroke, so as to replace a conventional damper. | 03-06-2014 |
20140133680 | Electrostatic Loudspeaker with Multichannel Output - An electrostatic loudspeaker with multichannel output includes an electrostatic diaphragm, spacers, a first electrode plate and a second electrode plate. The electrostatic diaphragm has two outer surfaces, and a spacer is disposed on each outer surface. The spacers and the electrostatic diaphragm are sandwiched between the first and second electrode plates. At least two metal layers that do not overlap each other are respectively disposed on each of the first and the second electrode plates, and are electrically connected to at least two different electric contacts respectively, so as to obtain at least two corresponding sound source signals. In this manner, at least two metal layers attract or repel the electrostatic diaphragm, causing the electrostatic diaphragm to vibrate and generate sound respectively. In this presentation, at least two sound source signals may be applied to the same electrostatic loudspeaker, thereby achieving the objective of multichannel output. | 05-15-2014 |
20140161291 | DRIVE CONTROL METHOD OF ELECTROSTATIC-TYPE ULTRASONIC TRANSDUCER, ELECTROSTATIC-TYPE ULTRASONIC TRANSDUCER, ULTRASONIC SPEAKER USING ELECTROSTATIC-TYPE ULTRASONIC TRANSDUCER, AUDIO SIGNAL REPRODUCING METHOD, SUPERDIRECTIONAL ACOUSTIC SYSTEM, AND DISPLAY - A push-pull-type electrostatic-type ultrasonic transducer includes a first electrode having through holes, a second electrode having through holes each of which is paired with the corresponding through hole of the first electrode, and an oscillation film sandwiched between a pair of the first and second electrodes and having a conductive layer to which direct current bias voltage is applied. When a wavelength obtained from a resonance frequency at a mechanical oscillation resonance point of the oscillation film is λ, a thickness t of the respective fixed electrodes is (λ/4)·n or substantially (λ/4)·n (where λ: wavelength of ultrasonic wave, n: positive odd number). AC signals as modulation waves produced by modulating carrier waves in an ultrasonic frequency band by signal waves in an audio frequency band are applied between a pair of the electrodes. | 06-12-2014 |
20140301581 | Laser Welded Speaker - A laser welded speaker, including a lower cover, an upper cover fitting with the lower cover, a frame arranged on the lower cover, a lower piece arranged at a bottom of the frame, a magnet arranged in the middle of the lower piece, a pole piece arranged on the magnet, a vibration plate arranged on the frame, and a voice coil fixedly arranged on the vibration plate, the frame is located over the pole piece, the vibration plate is formed of a vibration plate top arc located in the middle and a vibration plate edge located at a periphery, and the vibration plate top arc and the vibration plate edge are fixedly connected together through laser welding. The vibration plate top arc and the vibration plate edge are welded through laser, thereby improving heat-resistant performance of the vibration plate and reducing harm to a human body and environmental pollution. | 10-09-2014 |
20140321676 | ELECTROSTATIC SPEAKER - An electrostatic speaker includes: a first electrode formed of a sheet-like member, having a first face including a protrusion and a second face opposite the first face, and having conductivity and flexibility; a second electrode formed of a sheet-like member, disposed so as to be opposed to the second face, and having conductivity and flexibility; and an oscillator formed of a flexible sheet-like member, and disposed between the first electrode and the second electrode, at least one face of which has conductivity. | 10-30-2014 |
20140321677 | VIBRATION DEVICE, SOUND GENERATOR, SPEAKER SYSTEM, AND ELECTRONIC DEVICE - The vibration device includes a vibration body, an exciter, and a load member. The exciter causes the vibration body to vibrate. The load member is attached to a part of the vibration body. The load member is not contacted to the exciter. The load member is configured to reduce an amplitude of the part of the vibration body where the load member is attached. | 10-30-2014 |
20150016640 | ACOUSTIC GENERATOR, ACOUSTIC GENERATING DEVICE, AND ELECTRONIC DEVICE - An acoustic generator according to an aspect of an embodiment includes an exciter, a vibrating body, and a damping member. The exciter receives input of an electric signal and vibrates. The exciter is attached to the vibrating body, and the vibrating body vibrates together with the exciter with vibration of the exciter. The damping member is attached so as to vibrate together with the vibrating body and the exciter and has a non-uniform thickness in a direction orthogonal to a vibration surface of the vibrating body. | 01-15-2015 |
20150049886 | ELECTROSTATIC SPEAKER - An electrostatic speaker is described that includes a curved diaphragm positioned between two electrically conductive plates. According to aspects, the curved diaphragm has an “S-shape” and is configured to electrostatically move between the conductive plates. In particular, the curved diaphragm may generally roll between the two conductive plates so as to move from left to right with respect to ends of the conductive plates and push air in a direction toward ends of the conductive plates, thus generating acoustic output. In some implementations, the configuration of the electrostatic speaker reduces a biasing voltage required for the conductive plates. | 02-19-2015 |
20150063609 | Electromagnetic Vibration Device and Manufacturing Method Thereof - An electromagnetic vibration device includes a vibration plate device, a voice coil assembly, a magnetic loop system, and a peripheral basin frame. One end of the peripheral basin frame is coupled to the vibration plate device, and the other end thereof is coupled to the magnetic lop system. The peripheral basin frame includes a plurality of connecting frames, wherein every two connecting frames are connected by a connecting member to form an integral peripheral basin frame. The size of the peripheral basin frame is adjusted by the distance between the connection frames or relative increase of the number of the connection frames, so that the size of the peripheral basin frame is adjustable to match with the vibration plate device of the electromagnetic vibration device. Only a mold is required to manufacture the connecting frame to form the peripheral basin frame for different sizes of electromagnetic vibration device. | 03-05-2015 |
20150071468 | Electrostatic Electroacoustic Transducer and Fabricating Methods for the Same - An electrostatic electroacoustic transducer includes a first structure, a second structure and a third electrode. The third electrode is located between the first structure and the second structure. The first structure includes a first driving element, a first spacer and a first diaphragm, and the second structure includes a second driving element, a second spacer and a second diaphragm. By providing an alternating voltage source, a transformer and a bias voltage, the electrostatic electroacoustic transducer with a dual diaphragm structure has a high efficiency and an enlarged range of audio frequency. | 03-12-2015 |
20150078591 | ACOUSTIC TRANSDUCER AND MICROPHONE - An acoustic transducer has a vibrating film and a fixed film formed above an opening portion of a substrate, and at least a first sensing portion and a second sensing portion that detect sound waves using change in capacitance between a vibrating electrode provided in the vibrating film and a fixed electrode provided in the fixed film, convert the sound waves into electrical signals, and output the electrical signals. In the first sensing portion and the second sensing portion, the fixed film is used in common, and the vibrating electrode is divided into a first sensing region and a second sensing region that respectively correspond to the first sensing portion and the second sensing portion. In the first sensing portion, a protrusion portion that protrudes toward the vibrating electrode is provided on a region of the fixed film that opposes the first sensing region. | 03-19-2015 |
20150078592 | ACOUSTIC TRANSDUCER AND MICROPHONE - An acoustic transducer has a substrate having a cavity, a vibrating electrode plate disposed above the substrate and having a void portion that allows pressure to escape, a fixed electrode plate disposed above the substrate opposite the vibrating electrode plate, and a leak pressure regulation portion that hinders leakage of air pressure by passing through the void portion when the vibrating electrode plate is not undergoing deformation, and that becomes separated from the void portion and allows pressure to escape by passing through the void portion when the vibrating electrode plate undergoes deformation from being subjected to pressure. | 03-19-2015 |
20150078593 | ACOUSTIC TRANSDUCER AND MICROPHONE - An acoustic transducer has a substrate having a cavity, a vibrating electrode plate disposed above the substrate and having a void portion that allows pressure to escape, a fixed electrode plate disposed above the substrate opposite the vibrating electrode plate, a plurality of sensing portions configured by the vibrating electrode plate and the fixed electrode plate, at least one of the vibrating electrode plate and the fixed electrode plate being divided into a plurality of regions, and a sensing portion being configured by the vibrating electrode plate and the fixed electrode plate in each of the divided regions, and a leak pressure regulation portion that hinders leakage of air pressure passing through the void portion when the vibrating electrode plate is not undergoing deformation. | 03-19-2015 |
20150098595 | AUDIO SPEAKING HAVING AN ELECTROSTATIC MEMBRANE PUMP AND METHODS TO USE SAME - An improved an audio speaker having an electrostatic membrane pump. The electrostatic membrane pump can be an electrostatic graphene membrane pump. The method of making and using the audio speaker having the electrostatic membrane pump. | 04-09-2015 |
20150125008 | FREQUENCY DEPENDENT SWITCH - Generally disclosed herein are transducers that can convert sound energy into electrical signals, such as to detect if a pressure wave includes a specific frequency. Methods of using the transducers and systems that include the transducers are disclosed herein as well. A transducer can include a first probe plate, a second probe plate, a ground plate situated between the first and second probe plates, a first electret film adjacent to a first side of the ground plate and situated between the first and second probe plates, and a second electret film adjacent to a second side of the ground plate and situated between the first and second probe plates, the second side opposite the first side. | 05-07-2015 |
20150125009 | ACOUSTIC GENERATOR, ACOUSTIC GENERATION DEVICE, AND ELECTRONIC APPARATUS - To provide an acoustic generator, an acoustic generation device, and an electronic apparatus including an exciter which vibrates by an electric signal being input, and being capable of suppressing a peak dip and flattening frequency characteristics. To solve the problem, an acoustic generator disclosed herein includes: an exciter which vibrates by an electric signal being input; and a film-shaped vibrating body to which the exciter is bonded via a bonding material and which vibrates together with the exciter by the vibration of the exciter, wherein the bonding material has a protruded part which protrudes from an outer edge of the exciter when the vibrating body is viewed in plane, and at least a part of the protruded part has an undulating shape. | 05-07-2015 |
20150146896 | ELEVATOR SYSTEM AND METHOD FOR IMPLEMENTING A SOUND SYSTEM FOR AN ELEVATOR - Improvement to a sound system for an elevator system and method for implementing the sound system for an elevator. The elevator sound system is improved by replacing at least one loudspeaker to be used in the sound system with a plate-like electrostatic actuator producing a directed sound field. The patent application also contains an independent claim for a method for implementing a sound system for an elevator. | 05-28-2015 |
20150358738 | ACOUSTIC GENERATOR, ACOUSTIC GENERATING APPARATUS, AND ELECTRONIC APPARATUS - An acoustic generator according to an embodiment includes a film-shaped vibrating body, a flame, and an exciter. The frame is configured to fix at least both ends of the vibrating body in a second direction perpendicular to a first direction that is a thickness direction of the vibrating body. The exciter is disposed on the vibrating body, and is configured to vibrate itself to vibrate the vibrating body. The vibrating body has a value of an average coefficient of linear expansion during a temperature change from 90° C. to 40° C. set to be not less than a value of the average coefficient of linear expansion of the vibrating body during a temperature change from 40° C. to 90° C., and set to be not less than a value of an average coefficient of linear expansion of the flame during a temperature change from 90° C. to 40° C. | 12-10-2015 |
20160007124 | ELECTROSTATIC MEMBRANE PUMP/TRANSDUCER AND METHODS TO MAKE AND USE SAME - An improved electrostatic membrane pump/transducer having an array of electrostatic membrane pump transducers that utilize a venturi channel. The electrically conductive membrane of the electrostatic membrane pump transducers can be a polymer membrane coated with a conductive coating. The electrostatic membrane pump transducers can be optionally controlled such that one set is out of phase with another set. | 01-07-2016 |
20160014528 | ACOUSTIC TRANSDUCER | 01-14-2016 |
20160021466 | ULTRASONIC TRANSDUCER - Ultrasonic transducers that are capable of generating increased levels of ultrasound, as well as receiving ultrasonic waves with increased sensitivity. The ultrasonic transducers include a back cover, a protective front cover, a backplate, and a vibrator film layer disposed between the backplate and the protective front cover. The backplate includes a plurality of grooves formed on a surface thereof facing the vibrator film layer. Each groove includes upper edges having cross-sectional contours that gradually tend toward the deepest part of the groove to allow a larger area of the backplate to be closer to the vibrator film layer, thereby increasing the resulting electric field, and, consequently, increasing the output power and sensitivity of the ultrasonic transducer. | 01-21-2016 |
20160127814 | SPEAKER - A speaker includes a hollow casing, a vibration plate, a vibrator, a wireless communication unit, and a processor. The casing defines a receiving space. The vibration plate is secured to the casing, and includes a first portion received in the receiving space and a second portion protruding out of the casing. The vibrator is received in the receiving space and attached to the first portion. The processor is configured to control the vibrator to vibrate when the speaker receives a wireless signal via the wireless communication unit, thereby allowing the vibration plate to vibrate and output sound. | 05-05-2016 |
20160157022 | ELECTROSTATIC GRAPHENE SPEAKER | 06-02-2016 |
20160192083 | SPLICING TYPE ELECTRET LOUDSPEAKER - The present invention discloses a splicing type electret loudspeaker. The splicing type electret loudspeaker may comprise a plurality of electret loudspeaker units. Each electret loudspeaker unit may comprise a plurality of connection ports, and these connection ports may be disposed around the edge of each electret loudspeaker unit. In particular, the connection ports of each electret loudspeaker unit can respectively connect to one of the connection ports of another electret loudspeaker unit; in this way, these electret loudspeaker units can connect to each other in parallel, such that the power input signal and the audio input signal can be transmitted to all electret loudspeaker units to drive them. | 06-30-2016 |