Microphone Type Patents (Class 181/158)
  • Patent number: 11148608
    Abstract: 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: Grant
    Filed: October 19, 2018
    Date of Patent: October 19, 2021
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventor: Satoshi Yoshino
  • Patent number: 10825982
    Abstract: 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: Grant
    Filed: September 11, 2015
    Date of Patent: November 3, 2020
    Assignee: Vesper Technologies Inc.
    Inventors: Robert J. Littrell, Karl Grosh, Craig Core, Yu Hui, Wang Kyung Sung
  • Patent number: 10818162
    Abstract: 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: Grant
    Filed: July 14, 2016
    Date of Patent: October 27, 2020
    Assignee: Ultrahaptics IP Ltd
    Inventors: Thomas Andrew Carter, Benjamin John Oliver Long, Robert Charles Blenkinsopp
  • Patent number: 10743113
    Abstract: 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: Grant
    Filed: August 1, 2019
    Date of Patent: August 11, 2020
    Assignee: Shure Acquisition Holdings, Inc.
    Inventors: Jeff Segota, Michael Alwicker, Daniel Pratt, John Miller, Elizabeth Cho
  • Patent number: 10645499
    Abstract: 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: Grant
    Filed: December 28, 2018
    Date of Patent: May 5, 2020
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Rui Zhang, Jinyu Zhang, Ting Kang
  • Patent number: 10506349
    Abstract: 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: Grant
    Filed: February 13, 2018
    Date of Patent: December 10, 2019
    Assignee: AUDIO-TECHNICA CORPORATION
    Inventor: Maiko Komatsu
  • Patent number: 10499161
    Abstract: 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: Grant
    Filed: June 23, 2014
    Date of Patent: December 3, 2019
    Assignee: TDK CORPORATION
    Inventor: Kurt Rasmussen
  • Patent number: 10225636
    Abstract: 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: Grant
    Filed: January 15, 2015
    Date of Patent: March 5, 2019
    Inventor: Steven Mark Levinsohn
  • Patent number: 9949019
    Abstract: 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: Grant
    Filed: February 29, 2016
    Date of Patent: April 17, 2018
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 9936288
    Abstract: 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: Grant
    Filed: March 4, 2016
    Date of Patent: April 3, 2018
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 9877110
    Abstract: 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: Grant
    Filed: December 28, 2015
    Date of Patent: January 23, 2018
    Inventor: Michael Patrick Timmins
  • Patent number: 9860636
    Abstract: 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: Grant
    Filed: July 12, 2016
    Date of Patent: January 2, 2018
    Assignee: Google LLC
    Inventor: Rajeev Conrad Nongpiur
  • Patent number: 9838769
    Abstract: 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: Grant
    Filed: September 2, 2016
    Date of Patent: December 5, 2017
    Assignee: Auralex Acoustics
    Inventors: Mark A. Kauffman, Benjamin A. Carlisle, Mark Henderson, Andrew Symons, Eric T. Smith
  • Patent number: 9800975
    Abstract: 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: Grant
    Filed: April 18, 2016
    Date of Patent: October 24, 2017
    Assignee: mPerpetuo, Inc.
    Inventors: Robert Young, Ashwini Choudhary, Eugene Feinberg, Hideaki Oshima, Eran Steinberg
  • Patent number: 9781499
    Abstract: 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: Grant
    Filed: March 27, 2015
    Date of Patent: October 3, 2017
    Assignee: Intel Corporation
    Inventor: Swarnendu Kar
  • Patent number: 9762992
    Abstract: 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: Grant
    Filed: May 9, 2016
    Date of Patent: September 12, 2017
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 9596547
    Abstract: 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: Grant
    Filed: March 12, 2015
    Date of Patent: March 14, 2017
    Assignee: INVENSENSE, INC.
    Inventor: Xin Zhang
  • Patent number: 9589552
    Abstract: 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: Grant
    Filed: March 31, 2016
    Date of Patent: March 7, 2017
    Assignee: Roland Corporation
    Inventor: Hiroyuki Nishi
  • Patent number: 9544680
    Abstract: 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: Grant
    Filed: June 11, 2015
    Date of Patent: January 10, 2017
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 9516422
    Abstract: 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: Grant
    Filed: February 16, 2015
    Date of Patent: December 6, 2016
    Inventor: Hiroshi Ohara
  • Patent number: 9497538
    Abstract: 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: Grant
    Filed: July 9, 2015
    Date of Patent: November 15, 2016
    Assignee: KABUSHIKI KAISHA AUDIO-TECHNICA
    Inventor: Hiroshi Akino
  • Patent number: 9363608
    Abstract: 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: Grant
    Filed: July 5, 2013
    Date of Patent: June 7, 2016
    Assignees: OMRON CORPORATION, STMICROELECTRONICS S.R.L.
    Inventors: Takashi Kasai, Shobu Sato, Yuki Uchida, Igino Padovani, Filippo David, Sebastiano Conti
  • Patent number: 9338538
    Abstract: 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: Grant
    Filed: April 26, 2013
    Date of Patent: May 10, 2016
    Assignee: INVENSENSE, INC.
    Inventors: Jason W. Weigold, Kieran P. Harney
  • Patent number: 8492957
    Abstract: 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: Grant
    Filed: March 23, 2010
    Date of Patent: July 23, 2013
    Inventor: Kohji Toda
  • Patent number: 8443934
    Abstract: 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: Grant
    Filed: December 6, 2011
    Date of Patent: May 21, 2013
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 8111855
    Abstract: 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: Grant
    Filed: December 9, 2008
    Date of Patent: February 7, 2012
    Assignee: Chi Mei Communication Systems, Inc.
    Inventors: Kai-Po Chan, Chao-Yuan Cheng, Chao-Kun Tseng
  • Publication number: 20110266087
    Abstract: 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: Application
    Filed: April 28, 2011
    Publication date: November 3, 2011
    Inventor: Hiroshi Akino
  • Publication number: 20110261979
    Abstract: 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: Application
    Filed: December 26, 2010
    Publication date: October 27, 2011
    Inventors: Bin YANG, Rui Zhang
  • Publication number: 20110255716
    Abstract: 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: Application
    Filed: December 26, 2010
    Publication date: October 20, 2011
    Inventors: Zhou GE, Rui Zhang
  • Patent number: 7946379
    Abstract: 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: Grant
    Filed: May 15, 2009
    Date of Patent: May 24, 2011
    Inventor: Michael Frenchik
  • Patent number: 7753167
    Abstract: 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: Grant
    Filed: January 12, 2006
    Date of Patent: July 13, 2010
    Assignee: SMC Kabushiki Kaisha
    Inventors: Yoshihiro Fukano, Shoichi Makado
  • Patent number: 7711135
    Abstract: 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: Grant
    Filed: April 30, 2002
    Date of Patent: May 4, 2010
    Inventor: Teruo Tsutsumi
  • Patent number: 7610670
    Abstract: 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: Grant
    Filed: June 30, 2006
    Date of Patent: November 3, 2009
    Assignee: Kabushiki Kaisha Audio-Technica
    Inventor: Hiroshi Akino
  • Patent number: 7292696
    Abstract: 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: Grant
    Filed: January 30, 2003
    Date of Patent: November 6, 2007
    Assignee: Hosiden Corporation
    Inventors: Shinichi Saeki, Hirofumi Yamada
  • Patent number: 7287327
    Abstract: 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: Grant
    Filed: December 18, 2002
    Date of Patent: October 30, 2007
    Assignee: Star Micronics Co., Ltd.
    Inventors: Motoaki Ito, Kentaro Yonehara
  • Patent number: 7248703
    Abstract: 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: Grant
    Filed: June 13, 2002
    Date of Patent: July 24, 2007
    Assignee: BBN Technologies Corp.
    Inventors: John C. Heine, Istvan L. Ver, William B. Coney, Robert D. Preuss
  • Patent number: 7219763
    Abstract: 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: Grant
    Filed: December 9, 2004
    Date of Patent: May 22, 2007
    Assignee: Kojima Press Industry Co., Ltd.
    Inventors: Seiichiro Mizoguchi, Yoshitaka Uchida
  • Patent number: 7165647
    Abstract: 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: Grant
    Filed: December 18, 2003
    Date of Patent: January 23, 2007
    Inventor: Pei-Chau Lee
  • Patent number: 7074296
    Abstract: 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: Grant
    Filed: August 2, 2004
    Date of Patent: July 11, 2006
    Assignee: Phonak AG
    Inventor: Andi Vonlanthen
  • Patent number: 7065224
    Abstract: 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: Grant
    Filed: September 28, 2001
    Date of Patent: June 20, 2006
    Assignee: Sonionmicrotronic Nederland B.V.
    Inventors: Elrick Lennaert Cornelius, Paul Leonardus Clemens, Paul C. van Hal, Mike Geskus
  • Patent number: 6857501
    Abstract: 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: Grant
    Filed: September 21, 2000
    Date of Patent: February 22, 2005
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Cheol-Hyun Han, Eun Sok Kim
  • Patent number: 6851512
    Abstract: 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: Grant
    Filed: March 3, 2003
    Date of Patent: February 8, 2005
    Inventors: Charles Whitman Fox, Wade Casey McGregor
  • Patent number: 6813364
    Abstract: 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: Grant
    Filed: June 6, 2000
    Date of Patent: November 2, 2004
    Assignee: Phonak AG
    Inventor: Andi Vonlanthen
  • Publication number: 20030209383
    Abstract: 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: Application
    Filed: March 3, 2003
    Publication date: November 13, 2003
    Inventors: Charles Whitman Fox, Wade Casey McGregor
  • Publication number: 20030168278
    Abstract: A microphone housing to be mounted in a vehicle and having an electroacoustic transducer of a microphone arranged in the microphone housing has at least one sound entry opening, wherein the microphone housing when mounted projects past a surrounding surface of a component of the vehicle in which the microphone housing is mounted. The at least one sound entry, in the mounted state of the microphone housing, is positioned closely above the surrounding surface.
    Type: Application
    Filed: March 6, 2003
    Publication date: September 11, 2003
    Applicant: AKG Acoustics GmbH
    Inventor: Thomas Solderits
  • Patent number: 6418229
    Abstract: The present invention relates to a directional microphone, in particular having symmetrical directivity, having an interference tube with a tube axis which is provided with a row of sound inlets arranged at least approximately parallel to tube axis, and which incorporates an electroacoustic transducer in its inside in the vicinity of its rear end face. It is further provided that the row of sound inlets is arranged non-symmetrically to tube axis opposite the outer periphery of interference tube.
    Type: Grant
    Filed: February 13, 1998
    Date of Patent: July 9, 2002
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventor: Raimund Staat
  • Patent number: 6403039
    Abstract: A catalytic converter for a small engine and a method for manufacturing the same include a honeycomb body coated with catalytically active material and made from at least partly structured layers of sheet metal with channels for the passage of exhaust gas. In order to reduce manufacturing costs, the honeycomb body is placed in a silencer housing disposed in the proximity of the engine, in such a way that at least a predominant portion of exhaust gas of the small engine has to flow through the honeycomb body. The honeycomb body is a layered, wound or folded stack of sheet metal layers, which is squeezed into the silencer housing, plastically deforming at least 10% and preferably 20 to 30% of the channels, so that it completely fills at least a partial volume of the housing.
    Type: Grant
    Filed: May 10, 1999
    Date of Patent: June 11, 2002
    Assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Rolf Brück, Wolfgang Maus
  • Patent number: 6122383
    Abstract: A device is provided for reducing noise in the human ear having a microphone which picks up the noise and a reproduction transducer to which a noise compensation signal is fed via a compensation circuit which is connected with the microphone. The microphone in the device has a balancing element which is arranged in front of the sound entrance opening of the microphone. The balancing element defines a quasi-constant sound reflection and accordingly reduces individual reflection effects caused by the fundamental diversity of the external region of the human ear and improves the use of the entire device and increases the effectiveness of the noise compensation overall. In this way, headphones/hearing protectors can also be designed as acoustically closed systems which are designed so as to rest on the ear.
    Type: Grant
    Filed: April 8, 1996
    Date of Patent: September 19, 2000
    Assignee: Sennheiser electronic KG
    Inventor: Wolfgang zum Berge
  • Patent number: 6109386
    Abstract: A honeycomb body that including wound sheet-metal layers including structured sheet-metal layers with structuring. The wound sheet-metal layers form an upper side, a lower side disposed remote from the upper side, a first edge region and a second edge region laterally extending from the upper side to the lower side. The second edge region is disposed remote from the first edge region. The wound sheet-metal layers are fixed in a common fixing zone at the first edge region. The structuring of the structured sheet-metal layers is at least partially flattened at the fixing zone so that adjacent wound sheet-metal layers lie close against each other at the common fixing zone. The wound sheet-metal layers preferably form a region with a flattened cross-sectional area. A muffler of an exhaust gas system of an internal combustion engine that includes the honeycomb body is also provided. In addition, a two-region housing that includes the honeycomb body is provided.
    Type: Grant
    Filed: August 9, 1999
    Date of Patent: August 29, 2000
    Assignee: Emitec Gesellschaft fuer Emissionstechnologie mbH
    Inventors: Wolfgang Maus, Rolf Bruck
  • Patent number: 5590211
    Abstract: A microphone includes a voice coil, a membrane and a diaphragm that has an annular convex portion encircling a central convex portion and a concentric cutout portion on the central convex portion. The membrane covers the cutout portion and extends to the periphery of the central convex portion. The combination of a properly designed cutout portion, the thickness of the membrane, the materials used for the membrane and the diaphragm, and the adhesive method employed to connect the membrane and the diaphragm shall result in a microphone that is capable of delivering high quality sound.
    Type: Grant
    Filed: July 14, 1995
    Date of Patent: December 31, 1996
    Inventor: Ching-Lu Chang