Microphone Type Patents (Class 181/158)
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Patent number: 11700470Abstract: This invention relates to microphone accessories, particularly to microphone flags for use with a hand-held microphone having a bulbous head and elongate stalk extending therefrom. The microphone accessory extends substantially radially outward from the microphone head or windshield and displays a communication, where a camera is configured to film the microphone accessory and to transmit the filmed communication to an audience for viewing.Type: GrantFiled: October 20, 2021Date of Patent: July 11, 2023Inventor: Steven Mark Levinsohn
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Patent number: 11606635Abstract: A noise-reduction microphone, a noise-reduction safe earphone and a noise-reduction safe Bluetooth headset, comprising an acoustic wave concentrator which has a sound signal capturing unit at its big end used to capture sound wave signal and amplify the external sound wave signal, and then transmitted to the small end of the acoustic wave concentrator connected to the air tube, and the air tube is connected to the receiver device which receives the acoustic signal from the air tube and converts it into electrical sound signals transmitted to a voice terminal from the receiver device by a connector. The sound information is transmitted by the air tube, so the length of the air to be could be setted pretty long so that people can keep at a distance from electrical equipments with radiation, the remote air tube microphone can be separately used as microphone or mike.Type: GrantFiled: October 8, 2018Date of Patent: March 14, 2023Inventor: Aidao Zhu
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Patent number: 11601762Abstract: A sound transducer and a method for operating a sound transducer are disclosed. In an embodiment a sound transducer includes a first piezoelectric element having first external electrodes configured to generate an acoustic signal from an electrical signal or vice versa, and at least one second external electrode, wherein the second external electrode is separately controllable from the first external electrodes in order to set electro-acoustic properties of the sound transducer.Type: GrantFiled: October 22, 2019Date of Patent: March 7, 2023Assignee: TDK ELECTRONICS AGInventors: Michael Gebhart, Peter Lukan, Michael Krenn
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Patent number: 11512714Abstract: A silencer assembly especially designed for attachment to the exhaust port of vacuum pumps and which adapts to the pumps pressure changes to regulate the outlet flow. The silencer features a perforated housing having an inner channel which connects to the discharge port of the vacuum pump and a valve assembly having a spring-loaded ball for dynamically regulating the fluid flow through the perforated housing. Once the pressure of the flow from the pump is high enough to compress a spring by pushing on a rubber ball which acts as a valve, a channel opens inside the silencer and the air can be vented through the radially distributed perforations on the housing. As the air escapes, the noise caused by the flow is reduced.Type: GrantFiled: March 19, 2019Date of Patent: November 29, 2022Assignee: AIRTECH GROUP, INC.Inventors: Vincent Imbornone, Raphael Sagher
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Patent number: 11496831Abstract: The improved active noise cancellation system for forced air heating or cooling systems onboard aircraft employs a duct having a proximal end coupled to the fan unit to entrain the airflow stream in the direction of a distal end of the duct. A reference sensor is positioned within the proximal end of the duct. A means is provided for injecting an audio frequency control signal into the airflow stream in a manner that does not substantially impede the airflow stream. An error sensor is positioned at the distal end of the duct where it is responsive to sounds carried by the airflow stream, including the audio frequency control signal. An electronic circuit coupled to the reference sensor and to the error sensor supplies a noise abating control signal to energize the control transducer and thereby substantially reduce at least one noise harmonic of the fan unit through destructive interference.Type: GrantFiled: April 6, 2021Date of Patent: November 8, 2022Assignee: Gulfstream Aerospace CorporationInventors: Tongan Wang, Scott Bohanan, Jim Jordan
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Patent number: 11388509Abstract: An acoustic reflector for a microphone to measure flyover noise generated by an aircraft. The microphone is configured to measure flyover noise generated by an aircraft flying on a preset path. The acoustic reflector includes at least a central portion having the shape of an ellipse having a major axis and a plurality of peripheral portions distributed around the central portion. The acoustic reflector allows edge effects to be attenuated at the low frequencies of the noise to be measured.Type: GrantFiled: September 23, 2020Date of Patent: July 12, 2022Assignee: Airbus Operations (S.A.S.)Inventors: Philippe Bousquet, Vincent Blandeau
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Patent number: 11231491Abstract: An ultrasound probe is formed with protected interconnects, thereby resulting in a more robust probe. The interconnects are mounted between an array of transducer elements and an integrated circuit. The array of transducer elements are coupled to the interconnect via flip chip bumps or other structures. Underfill material fixedly positions the interconnects to the integrated circuit. A method of making the transducer assembly is provided.Type: GrantFiled: October 29, 2014Date of Patent: January 25, 2022Assignee: KONINKLIJKE PHILIPS N.V.Inventors: Michael Scarsella, Wojtek Sudol
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Patent number: 11148608Abstract: A windscreen with good visibility of light from a light emitting part and a microphone device are provided. The windscreen 20 according to the present invention is a windscreen attached to a microphone 10 including a sound collecting part 111 and 114 configured to collect sound, and a light emitting display part 116 configured to indicate an operation state of the sound collecting part. The windscreen includes a windscreen body 21 that covers the sound collecting part, and a fixing member 22 that fixes the windscreen body to the microphone. The windscreen body includes an insertion hole 21h in which the sound collecting part is disposed. The fixing member includes a light guide part 221 that is disposed outside the insertion hole. The light guide part guides light from the light emitting part.Type: GrantFiled: October 19, 2018Date of Patent: October 19, 2021Assignee: AUDIO-TECHNICA CORPORATIONInventor: Satoshi Yoshino
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Patent number: 10825982Abstract: A piezoelectric Micro-Electro-Mechanical Systems (MEMS) device comprising: a physical element; and a piezoelectric sensor element, with the physical element positioned in proximity to a moving portion of the piezoelectric sensor element, and with proximity of the physical element to the moving portion reducing a probability of breakage of the piezoelectric sensor element by limiting an excursion of the piezoelectric sensor element, relative to a probability of breakage of the piezoelectric sensor element in another piezoelectric MEMS device without the physical element.Type: GrantFiled: September 11, 2015Date of Patent: November 3, 2020Assignee: Vesper Technologies Inc.Inventors: Robert J. Littrell, Karl Grosh, Craig Core, Yu Hui, Wang Kyung Sung
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Patent number: 10818162Abstract: A system providing various improved calibration techniques for haptic feedback is described. An acoustic field is defined by one or more control points in a space within which the acoustic field may exist. Each control point is assigned an amplitude value equating to a desired amplitude of the acoustic field at the control point. Because complete control of space is not possible, controlling the acoustic field at given points yields erroneous local maxima in the acoustic field levels at other related positions. In relation to mid-air haptic feedback, these can interfere in interactions with the space by creating secondary effects and ghost phenomena that can be felt outside the interaction area. The level and nature of the secondary maxima in the acoustic field is determined by how the space is controlled. By arranging the transducer elements in different ways, unwanted effects on the acoustic field can be limited and controlled.Type: GrantFiled: July 14, 2016Date of Patent: October 27, 2020Assignee: Ultrahaptics IP LtdInventors: Thomas Andrew Carter, Benjamin John Oliver Long, Robert Charles Blenkinsopp
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Patent number: 10743113Abstract: A microphone can include a cover having a series of slits and a nest. The nest can be configured to receive a first diaphragm, a second diaphragm, and a PCB in a stacked arrangement, such that the PCB is positioned between the first diaphragm and the second diaphragm. Also the first diaphragm can define a first plane, the second diaphragm can define a second plane, and the PCB can define a third plane and the first plane, the second plane, and the third plane can extend parallel to one another. The cover can also include slits having a first length and a second length, and the first length can be greater than the second length. The slits can extend both radially and axially.Type: GrantFiled: August 1, 2019Date of Patent: August 11, 2020Assignee: Shure Acquisition Holdings, Inc.Inventors: Jeff Segota, Michael Alwicker, Daniel Pratt, John Miller, Elizabeth Cho
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Patent number: 10645499Abstract: An MEMS microphone, including a base having a back cavity, and a capacitor system fixedly supported on the base, the capacitor system including a diaphragm and a back-plate spaced from the diaphragm. The diaphragm is provided with a venting portion passing through an edge thereof, and the base includes an inner side surface surrounding the back cavity and at least one venting groove formed by recessing from an inner side surface in a direction away from the back cavity direction. The at least one venting groove is disposed corresponding to the venting portion and is in communication with the venting portion and the back cavity, respectively. The base is provided with a venting groove, so that the back cavity has larger space for venting, and the airflow can easily pass through, thereby reducing the probability of breaking the diaphragm. Thus, the MEMS microphone can have a higher reliability.Type: GrantFiled: December 28, 2018Date of Patent: May 5, 2020Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.Inventors: Rui Zhang, Jinyu Zhang, Ting Kang
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Patent number: 10506349Abstract: Provided are an electroacoustic transducer in which deterioration and variation in frequency characteristics are suppressed, a method of manufacturing an electroacoustic transducer, and an electroacoustic transducing device. An electroacoustic transducer 3 includes a diaphragm 34, a housing 33 accommodating the diaphragm, an elastic member 37 being accommodated in the housing, and a pressing member 31 pressing the elastic member. The elastic member is annular. The diaphragm includes a dome portions 341 and 342, and an attaching portion 343 disposed on an outer rim of the dome portion. The housing includes a stepped portion 331. The stepped portion includes a mounting surface 331a on which the attaching portion is mounted, and a wall surface 331b extending in a direction separating from the mounting surface. The elastic member 37 has an inner circumference, and an outer circumference. The pressing member presses the elastic member against the attaching portion.Type: GrantFiled: February 13, 2018Date of Patent: December 10, 2019Assignee: AUDIO-TECHNICA CORPORATIONInventor: Maiko Komatsu
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Patent number: 10499161Abstract: A microphone and a method for manufacturing a microphone are disclosed. In an embodiment the microphone includes a substrate, a transducer element defining a front volume and a lid arranged such that the transducer element is arranged between the substrate and the lid, wherein the lid comprises an opening which is arranged non-overlapping to the front volume of the transducer element. The microphone further includes an insert arranged between the lid and the transducer element, wherein the insert includes a path which connects the front volume of the transducer element to the opening of the lid.Type: GrantFiled: June 23, 2014Date of Patent: December 3, 2019Assignee: TDK CORPORATIONInventor: Kurt Rasmussen
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Patent number: 10225636Abstract: This invention relates to microphone accessories, particularly microphone flags, for use with a hand-held microphone having a bulbous head and elongate stalk extending therefrom. The accessory has at least one body having at least one display face for displaying at least a first communication; at least one attachment formation for attaching the body to the microphone; and at least one display member for displaying at least a second communication, wherein the at least one display member is permanently or removably attachable to the body and/or the microphone, and wherein the at least one display member is configured to extend and/or supplement the at least one display face of the body, in use. The invention also relates to a method of using a microphone and to a microphone accessory apparatus.Type: GrantFiled: January 15, 2015Date of Patent: March 5, 2019Inventor: Steven Mark Levinsohn
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Patent number: 9949019Abstract: A microphone includes a tubular first and second acoustic tubes configured with a gap between the second acoustic tube and an inner side of the wall surface of the first acoustic tube. A first opening portion is provided in a wall surface of the first acoustic tube. A second opening portion is provided in a wall surface of the second acoustic tube. A microphone unit is provided inside the second acoustic tube and is configured to acquire sound waves from outside the microphone. A sound wave introduction path formed by the first opening portion, the gap, and the second opening portion, is configured to transmit the sound wave from the outside to the microphone unit.Type: GrantFiled: February 29, 2016Date of Patent: April 17, 2018Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventor: Hiroshi Akino
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Patent number: 9936288Abstract: Excellent narrow-angle directivity is obtained by causing a microphone case main body to function as an acoustic tube, reducing a weight of a microphone, and suppressing leakage of sound waves from an inside of the acoustic tube to an outside. An acoustic tube microphone case includes a microphone case main body made of a metal tube having a plurality of openings formed in a peripheral surface, and acoustic resistance materials formed in a rectangular sheet manner, cylindrically rounded such that both right and left ends are mutually in contact, and arranged along an inner peripheral surface of the microphone case main body. A plurality of the acoustic resistance materials is layered, and at least the innermost acoustic resistance material applies a force in a developing direction by an elastic force thereof, and presses the outside acoustic resistance materials against the inner peripheral surface of the microphone case main body.Type: GrantFiled: March 4, 2016Date of Patent: April 3, 2018Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventor: Hiroshi Akino
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Patent number: 9877110Abstract: A ribbon microphone having a housing made of wood, a wood laminate, or another suitable composite material having a characteristic impedance and density and a ribbon transducer assembly with metal support chassis having a higher characteristic impedance and density. By engineering a body housing and the ribbon support chassis having a similar or equal total weight but differing greatly in density, a rapid attenuation of internal harmonics is achieved, particularly reducing the undesirable metallic resonance of the metal bodies of conventional microphones. The improved tonal quality is achieved, not by uncoupling the acoustic mass of the housing, but rather, by tightly coupling the wood housing to a slender chassis on rails that support the ribbon. Advantageously, this cooperative effect also acts to dampen unwanted rumble and external shock outputs, and in a preferred embodiment, magnetic pole pieces are eliminated by designing air gaps between the chassis and the magnets.Type: GrantFiled: December 28, 2015Date of Patent: January 23, 2018Inventor: Michael Patrick Timmins
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Patent number: 9860636Abstract: Methods and apparatus relating to microphone devices and signal processing techniques are provided. In an example, a microphone device can detect sound, as well as enhance an ability to perceive at least a general direction from which the sound arrives at the microphone device. In an example, a case of the microphone device has an external surface which at least partially defines funnel-shaped surfaces. Each funnel-shaped surface is configured to direct the sound to a respective microphone diaphragm to produce an auralized multi-microphone output. The funnel-shaped surfaces are configured to cause direction-dependent variations in spectral notches and frequency response of the sound as received by the microphone diaphragms. A neural network can device-shape the auralized multi-microphone output to create a binaural output. The binaural output can be auralized with respect to a human listener.Type: GrantFiled: July 12, 2016Date of Patent: January 2, 2018Assignee: Google LLCInventor: Rajeev Conrad Nongpiur
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Patent number: 9838769Abstract: Various configurations of a microphone shield are disclosed. Each of the microphone shields includes a number of panels configured to be positioned around a point in space at which a microphone may be positioned. Acoustic liners may be coupled to the panels. At least one of the panels and/or acoustic liners is configured to define an arc that is convex in shape relative to the point in space.Type: GrantFiled: September 2, 2016Date of Patent: December 5, 2017Assignee: Auralex AcousticsInventors: Mark A. Kauffman, Benjamin A. Carlisle, Mark Henderson, Andrew Symons, Eric T. Smith
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Patent number: 9800975Abstract: A digital camera includes an optical assembly and image sensor for capturing still and/or video images and displaying the images on a screen. The camera includes three or more spaced apart microphones aligned with the optical assembly for capturing audio during image capture. At least two pairs of microphones are spaced apart along orthogonal directional axes for capturing left-right stereo sound in any camera orientation.Type: GrantFiled: April 18, 2016Date of Patent: October 24, 2017Assignee: mPerpetuo, Inc.Inventors: Robert Young, Ashwini Choudhary, Eugene Feinberg, Hideaki Oshima, Eran Steinberg
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Patent number: 9781499Abstract: Particular embodiments described herein provide for an electronic device that includes a plurality of audio acquisition areas. Each of the plurality of audio acquisition areas can include a microphone element to detect audio data, an audio opening that allows the audio data to travel to the microphone element, and a windscreen that covers at least the audio opening. An audio module can be configured to receive the audio data from each of the plurality of audio acquisition areas and enhance the audio data.Type: GrantFiled: March 27, 2015Date of Patent: October 3, 2017Assignee: Intel CorporationInventor: Swarnendu Kar
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Patent number: 9762992Abstract: A condenser microphone unit is provided that can flatten a frequency response in a high frequency band. The condenser microphone unit includes a unit case having an acoustic-wave entering hole, and a diaphragm accommodated in the unit case. The diaphragm is configured to vibrate in response to acoustic waves from the acoustic-wave entering hole. In the condenser microphone unit, an acoustic resistor is disposed between the acoustic-wave entering hole and the diaphragm. The acoustic resistor includes two elastic members in pressure contact with each other. At least one of the two elastic members is curved in a convex shape before contacting the other of the two elastic members by the pressure contact. A convex surface of one of the two elastic members is a surface that comes in pressure contact with the other elastic member.Type: GrantFiled: May 9, 2016Date of Patent: September 12, 2017Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventor: Hiroshi Akino
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Patent number: 9596547Abstract: A MEMS microphone has a base, a backplate, and a backplate spring suspending the backplate from the base. The microphone also has a diaphragm forming a variable capacitor with the backplate.Type: GrantFiled: March 12, 2015Date of Patent: March 14, 2017Assignee: INVENSENSE, INC.Inventor: Xin Zhang
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Patent number: 9589552Abstract: Provided is a percussion instrument capable of enhancing the expressiveness of performance. A struck surface plate that vibrates to produce a musical sound when struck is disposed on a case, and a sound emission hole is formed to penetrate the struck surface plate. A musical signal is generated by a sound source device according to detection results of percussion sensors that detect the vibration caused by the striking on the struck surface plate. A sounding body produces an electronic musical sound based on the musical signal generated by the sound source device. Because the sounding body is disposed in the case, the musical sound produced by the vibration of the case and the electronic musical sound can be produced from the one case. Accordingly, the expressiveness of the performance using the percussion instrument can be enhanced.Type: GrantFiled: March 31, 2016Date of Patent: March 7, 2017Assignee: Roland CorporationInventor: Hiroyuki Nishi
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Patent number: 9544680Abstract: A boundary microphone includes a microphone and a boundary plate on which the microphone is placed. The boundary plate includes a porous metal material of an aluminum-based metallic fiber layer clamped by an aluminum-based expanded metal and crimped thereto. The boundary plate has a characteristic of absorbing an incoming sound wave without reflecting the sound wave to the microphone, and the microphone collects a direct sound.Type: GrantFiled: June 11, 2015Date of Patent: January 10, 2017Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventor: Hiroshi Akino
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Patent number: 9516422Abstract: A weaving method for a damper of a loudspeaker includes the steps of: a preparation step: providing a plurality of traditional warps and a plurality of conductive warps to extend in a vertical direction; and a weaving step: providing a plurality of wefts to extend in a horizontal direction transversely crossing the vertical direction in such a manner that each of the wefts passes alternately over and under each of the plurality of traditional warps and each of the plurality of conductive warps in order to form the damper.Type: GrantFiled: February 16, 2015Date of Patent: December 6, 2016Inventor: Hiroshi Ohara
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Patent number: 9497538Abstract: A variable directional microphone includes a unidirectional microphone unit having a front acoustic terminal and a rear acoustic terminal; an acoustic tube which accommodates the microphone unit therein and having a plurality of acoustic resistance openings in a circumferential wall thereof; a supporting member mounted within the acoustic tube to be movable along an axis of the acoustic tube and supporting the microphone unit, the supporting member having a predetermined acoustic resistance and allowing transmission of sound waves; and further includes a gap formed between an outer circumferential wall of the microphone unit and an inner circumferential wall of the acoustic tube for providing communication between the front acoustic terminal and the rear acoustic terminal. Directionality of the variable directional microphone changes depending on the position of the microphone unit in the acoustic tube.Type: GrantFiled: July 9, 2015Date of Patent: November 15, 2016Assignee: KABUSHIKI KAISHA AUDIO-TECHNICAInventor: Hiroshi Akino
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Patent number: 9363608Abstract: Provided is an acoustic transducer including: a semiconductor substrate; a vibrating membrane provided above the semiconductor substrate, including a vibrating electrode; and a fixed membrane provided above the semiconductor substrate, including a fixed electrode, the acoustic transducer detecting a sound wave according to changes in capacitances between the vibrating electrode and the fixed electrode, converting the sound wave into electrical signals, and outputting the electrical signals. At least one of the vibrating electrode and the fixed electrode is divided into a plurality of divided electrodes, and the plurality of divided electrodes outputting the electrical signals.Type: GrantFiled: July 5, 2013Date of Patent: June 7, 2016Assignees: OMRON CORPORATION, STMICROELECTRONICS S.R.L.Inventors: Takashi Kasai, Shobu Sato, Yuki Uchida, Igino Padovani, Filippo David, Sebastiano Conti
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Patent number: 9338538Abstract: A microphone system implements multiple microphones on a single base. To that end, the microphone system has a base, and a plurality of substantially independently movable diaphragms secured to the base. Each of the plurality of diaphragms forms a variable capacitance with the base and thus, each diaphragm effectively forms a generally independent, separate microphone with the base.Type: GrantFiled: April 26, 2013Date of Patent: May 10, 2016Assignee: INVENSENSE, INC.Inventors: Jason W. Weigold, Kieran P. Harney
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Patent number: 8492957Abstract: An apparatus for generating electric energy comprises a vibration plate, a supporting board, at least one side-wall unit and at least one piezoelectric substrate having a first- and a second end surfaces covered with a first- and a second electrodes, respectively. They all together form at least one cavity resonator. If a sound pressure from the outside arrives at the vibration plate, an acoustic vibration is excited in the vibration plate, and thereby a resonance vibration is induced in the cavity resonator. In this time, the piezoelectric substrate responds collectively to the resonance vibration. Thus, a resonance energy occurred in the cavity resonator is converted into an electric energy, which is delivered through the first- and second electrodes.Type: GrantFiled: March 23, 2010Date of Patent: July 23, 2013Inventor: Kohji Toda
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Patent number: 8443934Abstract: An acoustic resistance member includes an air-shielding layer which does not allow air to pass through such that acoustic waves do not propagate, and an acoustic resistance layer which allows air to pass through such that acoustic waves propagate. The air-shielding layer is composed of a resin containing a coloring agent, and a part of the air-shielding layer is removed.Type: GrantFiled: December 6, 2011Date of Patent: May 21, 2013Assignee: Kabushiki Kaisha Audio-TechnicaInventor: Hiroshi Akino
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Patent number: 8111855Abstract: A microphone assembly (10) using in a portable electronic device includes a fixing component (12) detachably fixed to a housing (30) of the portable electronic device, and a main microphone body (14) latched to the fixing component (12). The microphone assembly (10) may be conveniently detached and increases reliability of the housing (30).Type: GrantFiled: December 9, 2008Date of Patent: February 7, 2012Assignee: Chi Mei Communication Systems, Inc.Inventors: Kai-Po Chan, Chao-Yuan Cheng, Chao-Kun Tseng
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Publication number: 20110266087Abstract: A condenser microphone includes a cylindrical microphone case having a condenser microphone unit therein; a microphone connector having an insulating base, one ground pin and two signal pins are embedded in the microphone connector; and a cylindrical connector sleeve fitted in the microphone case and accommodating the microphone connector therein, in which the connector sleeve has a concave-convex part on the outer peripheral surface thereof, the concave-convex part is in contact with the inner peripheral surface of the microphone case at a plurality of points after the connector sleeve is fixed into the end of the microphone case by fixing means, and thereby the connector sleeve is electrically conducted with the microphone case.Type: ApplicationFiled: April 28, 2011Publication date: November 3, 2011Inventor: Hiroshi Akino
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Publication number: 20110261979Abstract: A diaphragm is disclosed. The diaphragm includes a vibrating member, a projection extruding from a periphery of the vibrating member, a supporting member surrounding the vibrating member. A first gap is formed between the vibrating member and the supporting member. The supporting member includes a supporting girder surrounding and separated from the projection. A torsion girder is connected to the projection and a fixing girder is parallel to the torsion girder. A second gap is defined between the fixing girder and the torsion girder.Type: ApplicationFiled: December 26, 2010Publication date: October 27, 2011Inventors: Bin YANG, Rui Zhang
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Publication number: 20110255716Abstract: A diaphragm is disclosed. A diaphragm includes a vibrating member capable of vibrating relative to the backplate and suspended by the supporting member extending from the vibrating member. The supporting member extends from a periphery of the vibrating member along a direction away from the centre of the diaphragm. The supporting member defines a first surface, a second surface facing to the first surface, a side wall connecting the first surface and the second surface. And the side wall defines a first side wall and a second side wall facing to the first side wall. The supporting member defines a first groove, a second groove. Along a direction parallel to the vibrating member, the first groove extends from the second side wall to the first side wall, with a first placket in the first side wall, and the second groove extends from the first side wall to the second side wall, with a second placket in the second side wall.Type: ApplicationFiled: December 26, 2010Publication date: October 20, 2011Inventors: Zhou GE, Rui Zhang
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Patent number: 7946379Abstract: The present invention discloses a filter assembly for filtering pop noise during a recording session, having a frame that forms the outer perimeter of the filter assembly, the frame comprising a first frame structure and a second frame structure. Further included is a filter diaphragm enclosed in between the first frame structure and the second frame structure of the frame, and a strap comprised of a second soft material that is coupled with the frame for detachably coupling the frame with a microphone.Type: GrantFiled: May 15, 2009Date of Patent: May 24, 2011Inventor: Michael Frenchik
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Patent number: 7753167Abstract: A silencer includes a cylindrical member held between a body connected to an exhaust side of a fluid pressure device and a disk-shaped retaining member. A net-shaped sound absorber is disposed around an outer circumference of the cylindrical member. A pressure fluid flows from the body into the interior of the cylindrical member and is discharged toward the sound absorber through a plurality of first through fifth exhaust holes formed in the cylindrical member. Accordingly, dust in the pressure fluid is removed by the sound absorber, which is formed of a plurality of stacked filters, and further, the pressure fluid is discharged to the outside after exhaust noises have been absorbed by the sound absorber.Type: GrantFiled: January 12, 2006Date of Patent: July 13, 2010Assignee: SMC Kabushiki KaishaInventors: Yoshihiro Fukano, Shoichi Makado
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Patent number: 7711135Abstract: In order to divide the inside space of the cabinet into at least two with a speaker being the center, obtain a plurality of emitted sound energies through openings constructed in each divided sphere, and utilize a cabinet of a loudspeaker apparatus as a sound echo box, a partition wall 4 is disposed at a right angle to a baffle board 2 or a front board 7, passing through the center O of a speaker 3 disposed on the baffle board 2 or the front board 7 of the cabinet 6, and divides the inside space of the cabinet 6 into at least two of an upper chamber 11U and a lower chamber 11D, so that sound energies are emitted from openings 8 and 9 which are provided in each chamber of 11D and 11U, respectively.Type: GrantFiled: April 30, 2002Date of Patent: May 4, 2010Inventor: Teruo Tsutsumi
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Patent number: 7610670Abstract: A diaphragm assembly used for a condenser microphone has a diaphragm made of a resin film including a metallized film on one surface of a supporter ring. The diaphragm is made by a first step of bonding a ring jig of a larger diameter than the supporter ring to the resin film having the metallized film composed of a ductile metallic material on the one surface via an adhesive without exerting tension on the resin film; a second step of heating and contracting the resin film bonded to the ring jig without applying the tension at a temperature over a glass transition point of a film material; and a third step of bonding the supporter ring to the resin film via an adhesive in a state of exerting predetermined tension on the resin film. The diaphragm assembly is cut out of the resin film after the adhesive becomes hardened.Type: GrantFiled: June 30, 2006Date of Patent: November 3, 2009Assignee: Kabushiki Kaisha Audio-TechnicaInventor: Hiroshi Akino
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Patent number: 7292696Abstract: The present invention is an electret condenser microphone that includes an electro-acoustic transducer (M) having an electret portion (E) including a diaphragm (6) acting as an electrode and a stationary electrode (2, 25) disposed in opposition to the diaphragm (6), and a FET (10) effecting an impedance conversion on an output from the electro-acoustic transducer (M) and then outputting the converted output on a signal line (L). A capacitor (11) and a varistor (12) are provided in parallel between the signal line (L) and a ground (18) and a resistor (13) is incorporated in series in the signal line (L).Type: GrantFiled: January 30, 2003Date of Patent: November 6, 2007Assignee: Hosiden CorporationInventors: Shinichi Saeki, Hirofumi Yamada
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Patent number: 7287327Abstract: A method for producing an electret capacitor microphone high in sensitivity and stable in acoustic characteristic. A PET film stretched with predetermined tension is bonded to a diaphragm support ring to perform stretch and fixation of a diaphragm to produce a diaphragm sub-assembly. The diaphragm sub-assembly is heated at a predetermined temperature (e.g. 200° C.) higher than a second order transition point of PET. Then, the diaphragm sub-assembly is packed in a housing. Because the diaphragm sub-assembly is heated at the predetermined temperature before packed in the housing, the stiffness of the diaphragm is reduced. Because the stiffness of the diaphragm 26 is reduced in such a manner, the tension at the time of stretch and fixation of the diaphragm can be set to a large value to prevent the diaphragm from being crinkled.Type: GrantFiled: December 18, 2002Date of Patent: October 30, 2007Assignee: Star Micronics Co., Ltd.Inventors: Motoaki Ito, Kentaro Yonehara
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Patent number: 7248703Abstract: A system (400) for reducing non-acoustic noise includes a primary sensor (420), at least one secondary sensor (410), a filter (415), and a summation unit (425). The primary sensor (420) measures pressure and produces a primary pressure signal. The at least one secondary sensor (410) measures pressure and produce a secondary pressure signal. The filter (415) processes the secondary pressure signal to produce a filtered pressure signal. The summation unit (425) subtracts the filtered pressure signal from the primary pressure signal to reduce non-acoustic noise in the primary pressure signal.Type: GrantFiled: June 13, 2002Date of Patent: July 24, 2007Assignee: BBN Technologies Corp.Inventors: John C. Heine, Istvan L. Ver, William B. Coney, Robert D. Preuss
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Patent number: 7219763Abstract: A microphone assembly fitted to a panel of a vehicle-mounted control module, provided with a housing for housing a microphone and having an opening section on a surface facing the panel, and a holding case for holding the housing so as to be capable of pivoting, and when inserted into a receptacle provided in the panel the housing pivots so as to seal the opening section to the panel.Type: GrantFiled: December 9, 2004Date of Patent: May 22, 2007Assignee: Kojima Press Industry Co., Ltd.Inventors: Seiichiro Mizoguchi, Yoshitaka Uchida
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Patent number: 7165647Abstract: A mechanical acoustic filter is formed of boards made by using erosion etching. The filter may be used in electric condenser microphones. The filter may be made of one or a plurality of boards each being made by erosion etching according to different requirements. The boards can be printed circuit boards, ply boards, or of other materials. Every etched board has corresponding paths, which after the boards are assembled, form an acoustic filtering path that not only can extend the length of the path to filter out high frequency noise more efficiently, but also can reduce the entire volume of the microphone assembly.Type: GrantFiled: December 18, 2003Date of Patent: January 23, 2007Inventor: Pei-Chau Lee
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Patent number: 7074296Abstract: A method of manufacturing a hearing device including providing a hearing aid housing having an opening, providing an electric/acoustic transducer, providing a support plate forming a blind hole having a membrane as a base, inserting the transducer into the blind hole, bringing the housing and support plate together such that a portion of the transducer enters through the opening in the housing, bonding the housing to the support plate, and trimming excess portion of the support plate.Type: GrantFiled: August 2, 2004Date of Patent: July 11, 2006Assignee: Phonak AGInventor: Andi Vonlanthen
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Patent number: 7065224Abstract: A microphone and method for dampening the frequency response of the microphone by disposing a dampening frame in a rear volume of the microphone. The microphone generally includes a housing, a diaphragm, a damping frame, and a backplate. The diaphragm rests on embossments in the housing, and a damping frame including a damping slit cut into an inner edge of the damping frame is positioned against the diaphragm. The backplate is positioned adjacent the damping frame to define an aperture which allows air to escape from the area between the backplate and the diaphragm into the rear volume of the microphone, thus dampening the frequency response of the microphone. The method includes the steps of aligning a sheet of diaphragms with a sheet of damping frames, curing these two sheets to form a carrier sheet having a plurality of subassemblies, singulating each subassembly, installing a backplate onto each subassembly to form a cartridge, and placing the cartridge into a microphone housing.Type: GrantFiled: September 28, 2001Date of Patent: June 20, 2006Assignee: Sonionmicrotronic Nederland B.V.Inventors: Elrick Lennaert Cornelius, Paul Leonardus Clemens, Paul C. van Hal, Mike Geskus
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Patent number: 6857501Abstract: A micromachined acoustic transducer comprising a parylene diaphragm piezoelectric transducer. The parylene diaphragm has far lower stiffness than the silicon nitride. The method for fabricating the parylene diaphragm acoustic transducer utilizes a prestructured disphragm layer utilizing silicon nitride which is compatible with high temperature semiconductor process. A silicon nitride layer is patterned and partially removed after forming the parylene diaphragm layer in order to enhance the structural qualities of the parylene diaphragm. The diaphragm may be flat or dome-shaped.Type: GrantFiled: September 21, 2000Date of Patent: February 22, 2005Assignee: The United States of America as represented by the Secretary of the NavyInventors: Cheol-Hyun Han, Eun Sok Kim
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Patent number: 6851512Abstract: A modular multiple microphone array method and mounting system that facilitates surround sound multichannel recording. Array configuration allows accurate and repeatable configurations suited to studio and field use. The lightweight design ensures portability and ease of placement in a variety of field recording situations: musical performance recording, film and video production, broadcast, sound effects recording, soundscape recording, etc. Versatility built into the array design allows compatibility with a variety of sound recording standards, from single channel mono to multichannel stereo and surround sound.Type: GrantFiled: March 3, 2003Date of Patent: February 8, 2005Inventors: Charles Whitman Fox, Wade Casey McGregor
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Patent number: 6813364Abstract: A transducer module for integration into a hearing aid device. The transducer module has an encapsulation with an opening and a transducer housing resiliently mounted in the encapsulation. The transducer module also has a first membrane and a second membrane. The first membrane forms a first space adjacent to a first side of the membrane which communicates with the opening. The first membrane also forms a second space adjacent to a second side of the first membrane which communicates with an intermediate space between the transducer housing and the encapsulation. The second membrane is for closing the opening of the encapsulation. Further, the transducer forms a self-contained module with the encapsulation as a housing of the module, with the module being adapted for insertion into the hearing device.Type: GrantFiled: June 6, 2000Date of Patent: November 2, 2004Assignee: Phonak AGInventor: Andi Vonlanthen