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Electrical Audio Signal Processing Systems And Devices > Electro-acoustic Audio Transducer > Having Electrostatic Element (e.g., Electret, Vibrating Plate) Having Electrostatic Element (e.g., Electret, Vibrating Plate)Having Electrostatic Element (e.g., Electret, Vibrating Plate) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.10/18/07 - 20070242843 - 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 the vibrating film. The vibrating film is formed of nonconductive bodies and has an electrode layer formed of a ... 09/20/07 - 20070217635 - Electret condenser An electret condenser 2 includes a fixed electrode 6, a vibrating electrode 5, an electretized silicon oxide film 7 formed between the electrodes, and silicon nitride films 8 and 9 formed so as to cover the silicon oxide film 7. The silicon oxide film 7 covered with the silicon nitride ... 08/16/07 - 20070189560 - Sound generator module, sound generating structure, and electronic device utilizing the same A piezoelectric sound generator module is provided which has a reduced thickness and superior mountability while ensuring good sound pressure characteristics. A sound generating structure and an electronic device, each utilizing the sound generator module, are also provided. The sound generator module has a structure in which a holding member ... 08/16/07 - 20070189559 - 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, wherein the conductive portions of the first stators are electrically coupled to each other; the conductive portions of the second stators are electrically ... 08/16/07 - 20070189558 - 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 having an acoustic hole 12 and a cavity 2; a drive circuit element 15 connected ... 06/07/07 - 20070127746 - 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 ... 05/24/07 - 20070116305 - Electro-acoustic transducer The present invention provides a stable and excellent electro-acoustic transducer having simple constitution with which a vibration pole does not contact with stator poles by a repulsive force acting between the vibration pole and the stator poles and the vibration pole can be stably positioned in place between the two ... 03/29/07 - 20070071261 - Electrostatic ultrasonic transducer, ultrasonic speaker and display device wherein Io denotes the reference acoustic intensity, the reference acoustic intensity being 0.96×10−12 (W/m2), ρo is the density of the air, the density of the air being 1.2 (kg/m3) and c denotes the sound speed in the air, the sound speed in the air being around 340 (m/S), when it ... 01/04/07 - 20070003082 - Miniature condenser microphone and fabrication method therefor An acoustic pressure type sensor fabricated on a supporting substrate is disclosed. The acoustic sensor is fabricated by depositing and etching a number of thin films on the supporting substrate and by machining the supporting substrate. The resulting structure contains a pressure sensitive, electrically conductive diaphragm positioned at a distance ... 01/04/07 - 20070003081 - Moisture resistant microphone Embodiments of the invention provide microphone assemblies which are resistant to moisture. One embodiment provides a microphone assembly comprising a housing, a diaphragm disposed in the housing and a backplate disposed in the housing. The housing includes a sound inlet port for the entry of sound waves. The backplate includes ... 12/28/06 - 20060291678 - Electronic device An electronic device which enables easily providing a mounting orientation recognition mark thereon while being provided with, on a end surface thereof, input/output terminals surrounded by a ground pattern. A substrate is provided within a case main body. A ground is formed on the surface of the substrate. An output ... 12/21/06 - 20060285707 - Electro-acoustic transducer An object of the present invention is to provide an electro-acoustic transducer having the effects of absorbing vibration and high-frequency noise, reducing the number of components, and preventing heat conduction at the same time. An electro-acoustic transducer according to the present invention includes: an electrically conductive capsule having an opening ... 11/02/06 - 20060245607 - Electrostatic transducer, method for connecting the same and manufacturing method An electrostatic transducer, a method for connecting the same and a manufacturing method. The electrostatic transducer comprises at least one stator, which comprises an insulating layer and a conducting layer, and a film element which is arranged to vibrate in response to voltage supplied to it and which is provided ... 11/02/06 - 20060245606 - Electret condenser microphone and manufacturing method thereof A microphone includes a housing, an acoustic port formed in the housing, a diaphragm disposed within the housing adjacent the acoustic port, a backplate assembly operably disposed within the housing in spaced relationship relative to the diaphragm and a circuit assembly disposed within the housing. A connecting member extends between ... 10/19/06 - 20060233404 - Horn array emitter A system and method is disclosed for a parametric emitter array with enhanced emitter-to-air acoustic coupling. The system comprises a plate support member having opposing first and second faces separated by an intermediate plate body. The plate body can have a plurality of conduits configured as an array of acoustic ... 09/28/06 - 20060215858 - Miniature condenser microphone and fabrication method therefor An acoustic pressure type sensor fabricated on a supporting substrate is disclosed. The acoustic sensor is fabricated by depositing and etching a number of thin films on the supporting substrate and by machining the supporting substrate. The resulting structure contains a pressure sensitive, electrically conductive diaphragm positioned at a distance ... 05/04/06 - 20060093171 - Silicon microphone with softly constrained diaphragm A microphone sensing element and a method for making the same are disclosed. The sensing element has a diaphragm and an attached electrical lead-out arm preferably made of polysilicon that are separated by an air gap from an underlying backplate region created on a conductive silicon substrate. The backplate region ... 05/04/06 - 20060093170 - 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 a perforated plate adjoining each side or corner. The diaphragm is aligned above one or more back holes created in a conductive substrate wherein the back hole ... 04/13/06 - 20060078137 - Dynamic pressure sensing structure A dynamic pressure sensing structure used in a condenser microphone includes an upper electrode plate, a lower electrode plate, a spacer and a substrate, wherein the upper and lower electrode plates are separated by the spacer and form a resonance cavity with the substrate. The upper electrode plate comprises a ... 01/12/06 - 20060008099 - Acoustic device A bending wave loudspeaker comprising a panel-form radiator and an electromechanical vibration exciter coupled to the radiator, wherein the bending stiffness of the radiator is in the range 0.001 to 1000 Nm, wherein the coupling between the exciter and the radiator is such that a component of the applied energy ... 12/22/05 - 20050281420 - 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 ... 12/22/05 - 20050281419 - Ultrasonic transducer, ultrasonic speaker, and method of controlling the driving of ultrasonic transducer An electrostatic ultrasonic transducer includes a diaphragm having a conducting layer and a pair of first and second fixed electrodes opposed to the corresponding surfaces of the diaphragm, the pair of fixed electrodes having a plurality of through holes in corresponding positions, wherein a DC bias voltage is applied to ... 07/07/05 - 20050147265 - Invertedly driven electrostatic speaker An electrostatic speaker system is provided wherein a multitude of speakers are provided in the system, each speaker having a thin electrically conductive film membrane sandwiched between a pair of stator plates. The film membrane is directly coupled to a high voltage AC audio signal emanating from a power amplifier ... ### FreshPatents.com Support |