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8184833 Electrostatic speaker arrangement for a mobile device  
A speaker is integrally formed with a multi-layered printed circuit board. The printed circuit board includes a flexible membrane layer with a conductive pattern thereon. Positive and negative...
8184832 Electrostatic loudspeaker capable of dispersing sound both horizontally and vertically  
An acoustic transducer, specifically an electrostatic loudspeaker (ESL) providing curvature in two directions for improved dispersion of sound waves. The compound curvature also provides a virtual...
8175300 Micro-electromechanical systems (MEMS) microphone and method of manufacturing the same  
Provided are a micro-electromechanical systems (MEMS) microphone and a method of manufacturing the same. A manufacturing process is simplified compared to a conventional art using both upper and...
8175302 Device for and method of generating a vibration source-driving-signal  
A device (100) for generating a vibration source driving signal (DS) is described, which device (100) comprises an input (101) for receiving an input signal (IS) and an output (102) for providing...
8175294 Electrostatic loudspeaker with single ended drive  
An electrostatic loudspeaker includes a front stator, first and second substantially conductive diaphragms, a center stator and a back stator. The front stator is connected to a safe reference...
8170238 Integrated circuit attached to microphone  
The invention provides an integrated circuit attached to a microphone. In one embodiment, the integrated circuit comprises a buffer, a gain stage, an analog-to-digital converter (ADC), and a memory...
8165324 Micromechanical component and method for its production  
A cost-effective technology for implementing a micromechanical component is provided, whose layer construction includes at least one diaphragm on the upper side and at least one counter-element, a...
8155355 Electret condenser microphone  
An electret condenser microphone includes: a substrate 13 in which an opening 25 is formed; an electret condenser 50 connected to one face of the substrate 13 so as to close the opening 25 and...
8155356 Structure and manufacturing 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...
8144911 Garment with speaker function  
A garment with a speaker function is provided. The garment includes a garment body, a bag, and an electret speaker. The bag disposed on the garment body includes a sound-absorbing layer. The...
8144918 Diaphragm for planar speaker and planar speaker  
A diaphragm for a planar speaker and a planar speaker having a long-term stability and a high reliability and exhibiting a flat sound pressure frequency property. The diaphragm for a planar speaker...
8144898 High performance microphone and manufacturing method thereof  
A microphone (100) and method of manufacture thereof is disclosed. The microphone (100) includes a housing (108), a diaphragm assembly (120), a spacer (134), a backplate assembly (140), a body...
8139795 Loudspeaker system for aircraft cabin  
A loudspeaker system for an aircraft cabin for passengers has a support structure, which includes multiple flexible flat elements, forming the internal walls of the cabin, and fastening devices for...
8135150 Electret condensor microphone  
An electret condenser microphone comprising a metal capsule having a top surface provided with sound receiving holes, a diaphragm, a back electrode plate that faces either one of surfaces of the...
8126171 Electrostatic ultrasonic transducer and ultrasonic speaker  
An electrostatic ultrasonic transducer includes a first electrode that has through-holes, a second electrode that has through-holes, and a vibrating membrane that is disposed such that the...
8126166 Condenser microphone and packaging method for the same  
Disclosed is a silicone based condenser microphone comprising: a metal case which includes a sound hole, a board which is mounted with a MEMS microphone chip and an ASIC chip having an electric...
8126167 Condenser microphone  
The present invention provides a condenser microphone, in which, with a simple manufacturing process, vibration characteristics of a diaphragm are improved, and a parasitic capacitance occurring...
8120229 Middle spring supported micro-electro-mechanical transducers  
A micro-electro-mechanical transducer (such as a cMUT) is disclosed. The transducer has a substrate, a top plate, and a middle spring layer therebetween. The substrate and the middle spring layer...
8111847 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...
8107652 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...
8107651 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...
8103025 Surface mountable transducer system  
The present invention relates to a surface mountable acoustic transducer system, comprising one or more transducers, a processing circuit electrically connected to the one or more transducers, and...
8103027 Microphone with reduced parasitic capacitance  
A MEMS microphone has an SOI wafer, a backplate formed in a portion of the SOI wafer, and a diaphragm adjacent to and movable relative to the backplate. The backplate has at least one trench that...
8103028 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...
8098855 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...
8094844 Micro acoustic transducer and manufacturing method therefor  
A micro acoustic transducer and manufacturing method are provided. Firstly, a substrate having one first and second cavities is provided. Then, a backplate with a plurality of acoustic holes is...
8085957 Method for converting electric signals into acoustic oscillations and an electric gas-kinetic transducer  
The invention relates to electroacoustic engineering, in particular to methods for converting electric signals into acoustic oscillations and to electroacoustic transducers. The method for...
8081784 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...
8073167 Comb sense microphone  
A miniature microphone, comprising a diaphragm, supported for displacement in response to acoustic waves, from which a plurality of projections extend; a plurality of projections extending from a...
8050443 Microphone and microphone mounting structure  
A microphone contains a capacitor in a capsule with a diaphragm serving as one of electrodes of the capacitor. The microphone is mounted on a mounting board when external terminals installed on an...
8045735 Ultrasonic transducer and ultrasonic speaker using the same  
An ultrasonic transducer includes: a pair of fixed electrodes including a conductive member; a vibrating film having a conductive layer; and a member which holds the pair of fixed electrodes and...
8045733 Silicon microphone with enhanced impact proof structure using bonding wires  
A backplateless silicon microphone and a wire protection method for improved impact resistance are disclosed. A circular diaphragm is surrounded by a circular spring having a plurality of slots and...
8045734 Backplateless silicon microphone  
A silicon based microphone sensing element and a method for making the same are disclosed. The microphone sensing element has a diaphragm with adjoining perforated plates on the front side of a...
8041059 Electrostatic transducer, ultrasonic speaker, driving circuit of capacitive load, method of setting circuit constant, display device, and directional sound system  
An electrostatic transducer includes: a class-D power amplifier that amplifies an input signal; and a low pass filter that has a plurality of pairs of inductors and capacitors, is connected to an...
8031890 Electroacoustic transducer  
An electroacoustic transducer serving as a speaker or a microphone is reduced in size and weight and is capable of generating sound with relatively high sound pressure. It is constituted of a...
8031901 Planar speaker driver  
A planar magnetic driver includes covering plates that are maintained under tension to form a buckled or curved surface, thereby providing for a larger magnetic gap, and allowing for a larger...
8009846 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...
8000483 Electrostatic loudspeaker systems and methods  
Embodiments of an electrostatic loudspeaker utilize first and second stators and a diaphragm disposed therebetween, each of the stators and the diaphragm having an electrically conductive portion,...
7995777 Thin film transparent acoustic transducer  
A thin film acoustic transducer is formed with an electrically actuatable substantially transparent thin film. Substantially transparent conductive thin films are supported on both sides of the...
7982369 Ultrasonic probe and ultrasonic diagnostic apparatus  
A base has a plurality of projections or recesses. Each of the projections or recesses corresponds to one channel of vibration elements. Each of the vibration elements has a plurality of MUT...
7970154 Condenser microphone  
A condenser microphone is obtained, in which the bias of a current amplifier circuit in emitter-follower connection immediately after an impedance converter automatically changes in accordance with...
7970148 Simultaneous enhancement of transmission loss and absorption coefficient using activated cavities  
A method and apparatus for providing simultaneous enhancement of transmission loss and absorption coefficient using activated cavities is presented. A layer of material is provided, and a backing...
7953235 Directional silicon condenser microphone having additional back chamber  
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...
7949142 Silicon condenser microphone having additional back chamber and sound hole in PCB  
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...
7949143 Ultrasonic transducer, ultrasonic speaker, acoustic system, and control method of ultrasonic transducer  
An ultrasonic speaker or acoustic system includes an electrostatic type ultrasonic transducer of a push-pull system is constructed such that a through hole is arranged in the central portion of a...
7944114 Ultrasonic transducer device and ultrasonic wave probe using same  
The present invention provides an ultrasonic transducer device to send and receive ultrasonic waves, comprising a semiconductor substrate, a lower electrode disposed on the semiconductor substrate,...
RE42347 Solid state silicon-based condenser microphone  
A solid state silicon-based condenser microphone comprising a silicon transducer chip (1). The transducer chip includes a backplate (13) and a diaphragm (12) arranged substantially parallel to each...
7940944 Directional silicon condenser microphone having additional back chamber  
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...
RE42346 Solid state silicon-based condenser microphone  
A solid state silicon-based condenser microphone comprising a silicon transducer chip (1). The transducer chip includes a backplate (13) and a diaphragm (12) arranged substantially parallel to each...
7926163 Method of producing an oscillator device  
An oscillator device having an oscillating member, a resilient support and a supporting member is produced. The oscillating member is supported by the resilient support for oscillation about an...
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