Plural Diaphragms Patents (Class 381/186)
  • Patent number: 10979823
    Abstract: A sound generator is provided by the present disclosure. The sound generator includes a frame; a magnetic circuit system fixed by the frame; and a vibration system carried by the frame. The vibration system includes a diaphragm and a voice coil fixed below the diaphragm for driving the diaphragm to vibrate. The voice coil includes a pair of parallel long axis edges, a pair of parallel short axis edges connected with ends of the long axis edges. The diaphragm includes a through hole formed corresponding to the long shaft edge of the voice coil, and a glue part filled in the through hole for connecting the long shaft edge of the voice coil with the diaphragm.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: April 13, 2021
    Assignee: AAC Technologies Pte. Ltd.
    Inventors: Wei Song, Fan Zhang, Weiwei Tao
  • Patent number: 10917712
    Abstract: A speaker and earplug earphones are provided. The speaker includes a cylindrical speaker housing. A partition board arranged along a radial direction is disposed in an enclosed cavity. A first speaker and a second speaker are respectively disposed on both sides of the partition board, and each includes a magnetic circuit system and a vibrating system. A magnetic gap is disposed between the magnetic circuit system and the speaker housing, and an air pressure balance holes are formed in the partition board located at the magnetic gap. The vibrating system includes a voice coil and a vibrating diaphragm covering the end part of the speaker housing. Each earplug earphone includes an earphone front housing and an earphone back housing. The speaker is mounted in the enclosed space. Multiple front housing sound output holes is formed in the earphone front housing. An acoustic waterproof membrane is disposed between the multiple front housing sound output holes and the speaker.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: February 9, 2021
    Assignee: GOERTEK TECHNOLOGY CO., LTD.
    Inventor: Chengqian Wang
  • Patent number: 10872591
    Abstract: Embodiments provide a compensator for a loudspeaker system having a first loudspeaker group having at least one sound transducer, the first loudspeaker group being configured to generate a first sound signal based on an audio signal, the sound signal having a useful signal portion and a distortion signal portion. The compensator has a second loudspeaker group having at least one sound transducer, the second loudspeaker group being configured to generate a second sound signal based on a compensation signal, the second sound signal compensating and/or reducing the distortion signal portion when superimposed with the first sound signal.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: December 22, 2020
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Lorenz Betz, Maximilian Wolf
  • Patent number: 10856061
    Abstract: A speaker device includes a housing that has a sound guide space having a vertically flattened shape, a first speaker disposed in the housing to be oriented toward a front of the housing, and a second speaker that is disposed in the housing and is oriented upward or downward to output sound into the sound guide space positioned at an internal upper part or an internal lower part of the housing. The sound guide space opens at an opening that is formed in vertically flattened form in the housing, and the opening has a vertical height that is smaller than an aperture of the first speaker.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: December 1, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Minoru Umesako, Takuto Takizawa, Yukiharu Wakiguchi, Hiroya Morikawa
  • Patent number: 10812912
    Abstract: An improved loudspeaker is disclosed. The speaker includes at least one permanent magnet, an electromagnet and a diaphragm. The diaphragm has an inner portion (active portion) and an outer portion (stabilizing portion) that are both typically ring-shaped. The interaction between the magnets causes the inner portion to move back and forth according to the electrical signal inputted. As the inner portion moves forward, the outer portion tends to move backward relative to the inner portion. The movement of the active portion tends to produce corresponding forces on the stabilizing portion that cause the stabilizing portion to move and create sound in a symbiotic fashion. In certain embodiments, the portions move relative to each other as sound is produced so that a relatively constant volume of air is displaced on either side of the diaphragm thus minimizing acoustic distortion.
    Type: Grant
    Filed: April 24, 2018
    Date of Patent: October 20, 2020
    Assignee: Dinaburg Technology Corp.
    Inventor: Mikhail Dinaburg
  • Patent number: 10667039
    Abstract: An acoustic device includes first and second acoustic cavities which are air tight. A first passive radiator includes a first passive radiator diaphragm that has a rear surface which is exposed to the first acoustic cavity. A second passive radiator includes a first passive radiator diaphragm having a front surface which is exposed to the first acoustic cavity, and a rear surface which is exposed to the second acoustic cavity. A first electro-acoustic transducer is supported on the second passive radiator diaphragm. The first electro-acoustic transducer is arranged such that a first radiating surface of the first electro-acoustic transducer radiates acoustic energy into the first acoustic chamber and a second radiating surface of the first electro-acoustic transducer radiates acoustic energy into the second acoustic chamber.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: May 26, 2020
    Assignee: Bose Corporation
    Inventors: Roman N. Litovsky, Chester Smith Williams, Michael Tiene
  • Patent number: 10645498
    Abstract: An electrodynamic acoustic transducer (1a . . . 1c) is presented, which comprises a housing (2), a membrane (3), a coil arrangement (6a . . . 6f) attached to the membrane (3) and a magnet system (9, 10, 11). The coil arrangement (6a . . . 6f) comprises a plurality of coils (7, 8) each having two terminals (T7, T8, T7a, T8a, T7b, T8b, T78) being static in relation to the housing (2). At least one pair of coils (7, 8) has one terminal (T78) in common, whereas the remaining terminals (T7, T8, T7a, T8a, T7b, T8b) are individual terminals (T7, T8, T7a, T8a, T7b, T8b). Connecting wires (12, 13, 12a, 13a, 12b, 13b) connect the coils (7, 8) with the individual terminals (T7, T8, T7a, T8a, T7b, T8b), and a conductive layer or path (14a . . . 14g) attached to the membrane (3) electrically connects the coils (7, 8) with the common terminal (T78).
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: May 5, 2020
    Assignees: AAC TECHNOLOGIES PTE. LTD., AAC TECHNOLOGIES (NANJING) CO., LTD.
    Inventor: Friedrich Reining
  • Patent number: 10555085
    Abstract: A voice coil former including a first portion having a planar region and an out-of plane region that extends outside a plane of the planar region, and wherein a length dimension of the first portion is at least two times greater than a width dimension of the first portion. The former further including a second portion extending from the first portion in a direction perpendicular to the plane of the first portion, the second portion being integrally formed with the first portion and dimensioned to support a voice coil thereon.
    Type: Grant
    Filed: June 16, 2017
    Date of Patent: February 4, 2020
    Assignee: Apple Inc.
    Inventors: Alexander V. Salvatti, Onur I. Ilkorur
  • Patent number: 10484775
    Abstract: An earphone structure is provided, relating to the technical field of earphones. The earphone structure includes: a speaker, including a sound producing vibrating diaphragm and a sound outlet, wherein the sound producing vibrating diaphragm is used to convert an electrical signal to a sound which is output through the sound outlet; a pipe, wherein the pipe has one end provided at a side of the speaker having the sound outlet, and the other end extending along a direction away from the sound outlet, such that the sound output from the sound outlet is transmitted to an outside space. With the above provision, a problem of easy occurrence of reflection of sound waves within a cavity due to presence of the cavity between the pipe and the sound outlet in the prior art, thereby overcoming a problem of sound coloration caused by the occurrence of reflection of the sound waves.
    Type: Grant
    Filed: October 10, 2018
    Date of Patent: November 19, 2019
    Assignee: ETEN ELECTRONCIS LIMITED
    Inventor: Jia Li
  • Patent number: 10469954
    Abstract: A thin speaker with a voice coil having a damper function, includes a frame, a magnetic device, a damper voice coil and a diaphragm. The damper voice coil comprises a holding member and a conductive member. The holding member includes a holding base and two holding suspension portions formed on two ends of the holding base. The conductive member includes a conductor wound to form a first winding at one side of the holding base and a second winding at the other side of the holding base, and two conductive suspension portions formed on two ends of the conductor and located on the top of holding suspension portions. Since the damper voice coil has the functions of a damper and a voice coil, the present invention is capable of maintaining a thin design and ensuring the up and down movements of the holding base to prevent its deflection.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: November 5, 2019
    Assignee: ZYLUX ACOUSTIC CORPORATION
    Inventors: Sheng Yueh Cheng, Wang Ting Tsai, Bo Feng Chen
  • Patent number: 10405098
    Abstract: A display device includes a display module displaying an image, a vibration generating device including at least one sound generating module vibrating the display module, a rear structure disposed on a rear surface of the display module to fix the vibration generating device, and a vibration transfer member disposed between the at least one sound generating module and the display module to extend from the at least one sound generating module to an edge of the display module. Accordingly, a sound pressure level corresponding to a high frequency domain is prevented from being reduced, thereby enhancing the quality of a sound output to a region in front of a display panel.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: September 3, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: SeungHwan Yoon, KiDuk Kim, DongKyun Lim, JaiHyuk Lee
  • Patent number: 10299044
    Abstract: A stabilizer for use in stabilizing a diaphragm of an audio device, such as a microphone transducer or a speaker driver. The stabilizer is configured to be attached to the diaphragm to provide stability to the diaphragm, which may be in the form of one or more of counteraction to asymmetric movement about the center of mass of the voice coil; counteraction to rotation in a direction perpendicular to the desired axial motion of the diaphragm; and additional nonlinear stiffness for mechanical limiting of the diaphragm in the axial direction, which may assist in preventing large excursions of the diaphragm from atypical sources, such as drop, shock, etc.
    Type: Grant
    Filed: May 30, 2014
    Date of Patent: May 21, 2019
    Assignee: Shure Acquisition Holdings, Inc.
    Inventor: Roger Stephen Grinnip, III
  • Patent number: 10271129
    Abstract: An acoustic device includes first and second acoustic cavities which are air tight. A first passive radiator includes a first passive radiator diaphragm that has a rear surface which is exposed to the first acoustic cavity. A second passive radiator includes a first passive radiator diaphragm having a front surface which is exposed to the first acoustic cavity, and a rear surface which is exposed to the second acoustic cavity. A first electro-acoustic transducer is supported on the second passive radiator diaphragm. The first electro-acoustic transducer is arranged such that a first radiating surface of the first electro-acoustic transducer radiates acoustic energy into the first acoustic chamber and a second radiating surface of the first electro-acoustic transducer radiates acoustic energy into the second acoustic chamber.
    Type: Grant
    Filed: March 20, 2017
    Date of Patent: April 23, 2019
    Assignee: Bose Corporation
    Inventors: Roman N. Litovsky, Chester Smith Williams, Michael Tiene
  • Patent number: 10231057
    Abstract: [Problem] To provide a universal speaker that efficiently transmits kinetic energy that has been converted from electrical energy of an audio signal to one or more diaphragms, and enables both healthy individuals and the hard of hearing to comfortably hear as a result of higher-volume and sharp emitted-sound. [Solution] This universal speaker (10) is provided at least with a diaphragm (1) having a planar shape, a driver unit (2) for causing the diaphragm to vibrate in accordance with an inputted electrical signal, and an enclosure (3) with a hollow structure for accommodating the diaphragm and the driver unit. The enclosure has an opening (39) at one surface, and the driver unit abuts against an end edge of the diaphragm so as to drive in the same direction as the plane direction of the diaphragm and is also fixedly mounted onto the enclosure.
    Type: Grant
    Filed: February 26, 2015
    Date of Patent: March 12, 2019
    Assignee: Sound Fun Corporation
    Inventors: Kazunori Sato, Nobuhiro Miyahara, Kentaro Matsuoka
  • Patent number: 10230416
    Abstract: A method and apparatus for carrying a portable communication device. The portable communication device includes a housing, a screen supported by the housing, and a speaker supported by the housing. A carrier releasably supports the portable communication device. The carrier includes a body having a first end, a second end opposite the first end, and a surface extending between the first and second ends. The screen of the portable communication device faces the surface of the body. The surface is spaced apart from me screen to form an acoustic tunnel between the screen and the surface. The speaker of the portable communication device directs sound into the acoustic tunnel.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: March 12, 2019
    Assignee: MOTOROLA SOLUTIONS, INC.
    Inventors: Chi T Tran, Chung Meng Chew, Kuang Eng Lim, Ban Hin Ooi
  • Patent number: 10212503
    Abstract: A acoustic device includes a supra-aural ear cup, a pinna replica at least partially enclosed by the supra-aural ear cup, wherein an inner surface of the pinna replica faces the exterior so that exterior sounds are received by the pinna replica and a microphone unit for collecting said exterior sounds, said microphone unit being configured to emit a first electric signal comprising information on the collected exterior sounds.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: February 19, 2019
    Assignee: GN Hearing A/S
    Inventors: Andrew Dittberner, Vidya Krull
  • Patent number: 10182294
    Abstract: An electroacoustic transducer is provided and includes: a diaphragm having a pair of longitudinal split tubular surfaces arranged next to each other, a valley being formed between respective side portions of the pair of longitudinal split tubular surfaces; a converter including a magnet mechanism and a voice coil configured to perform conversion between vibration of the diaphragm along a depth direction of the valley and an electric signal corresponding to the vibration; and a supporter that supports the diaphragm such that the diaphragm is vibratable along the depth direction of the valley. A tubular portion is provided at an intermediate portion of the valley to couple the diaphragm and the voice coil to each other, and the tubular portion extends in the depth direction of the valley.
    Type: Grant
    Filed: March 28, 2017
    Date of Patent: January 15, 2019
    Assignee: Yamaha Corporation
    Inventor: Akihiko Nozaki
  • Patent number: 10154338
    Abstract: In an example, a loudspeaker system includes a low frequency first transducer and an array of high frequency transducers overlapping a front face of the low frequency transducer. In an example, the transducer array has an arcuate profile, and an axis of the array is non-coaxial with a central axis of the first transducer.
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: December 11, 2018
    Assignee: Core Brands, LLC
    Inventors: Michael L. Strange, Doug S. Wright, Vance Dickason
  • Patent number: 10015585
    Abstract: A speaker frame, including: a vibration support portion supporting a vibrating body of a speaker; a magnet support portion arranged inside of said vibration support portion and supporting magnetic circuit portion of said speaker; and a plurality of connection beams connecting said vibration support portion and said magnet support portion, wherein the vibration support portion and the magnet support portion have a circular ring shape having the same major axis length and minor axis length, said plurality of connection beams are arranged radially centering on a central axis from said magnet support portion to said vibration support portion, the central axis being parallel to a direction of an acoustic radiation, and a length of one of said connection beams and a length of another connection beams are different from each other.
    Type: Grant
    Filed: October 2, 2017
    Date of Patent: July 3, 2018
    Assignees: PIONEER CORPORATION, TOHOKU PIONEER CORPORATION
    Inventors: Shintaro Niidera, Satoshi Hachiya
  • Patent number: 9936272
    Abstract: A media system 100 for vehicle 102 having chassis 104 comprises electroacoustic transducer 114, integrated into face panel 108 of stowage bin 110 inside vehicle 102. Stowage bin 110 comprises mounting structure 112 that is stationary relative to chassis 104 of vehicle 102. Interior 130 of stowage bin 110 is accessible via face panel 108. Face panel 108 is movably coupled to mounting structure 112.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: April 3, 2018
    Assignee: THE BOEING COMPANY
    Inventors: Yakentim Ibrahim, Kevin S. Callahan, Michael Alan Feinberg
  • Patent number: 9848267
    Abstract: An electronic apparatus 1 having a panel 10, a housing 60 for supporting the panel 10, and a piezoelectric element unit 30 attached to the panel 10, the panel 10 becomes bent by the piezoelectric element unit 30 in such a manner that a region of the panel 10 immediately above the piezoelectric element unit 30 in a longitudinal direction thereof is raised higher than a surrounding region, and thus a part of the human body in contact with the panel 10 vibrates and delivers a sound, wherein the panel 10 is attached to the housing 60 by a double-sided adhesive tape 70 provided along a periphery of the panel 10 and an adhesive 71 applied along the double-sided adhesive tape 70.
    Type: Grant
    Filed: September 1, 2014
    Date of Patent: December 19, 2017
    Assignee: KYOCERA Corporation
    Inventor: Takaaki Watanabe
  • Patent number: 9800968
    Abstract: The present invention discloses a high frequency transducer housing for use in a coaxial loudspeaker system to reduce diffraction. The coaxial loudspeaker system comprises at least one high frequency transducer that is arranged to be mounted with a second frequency transducer. The housing comprises a plurality of edges on a periphery of the housing. The edges of the housing have irregular shapes. The plurality of the edges are eccentric with a diaphragm of the second transducer.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: October 24, 2017
    Assignee: Paradigm Electronics Inc.
    Inventors: Oleg Bogdanov, Kevin Idzerda
  • Patent number: 9674614
    Abstract: A speaker unit includes a magnet having poles and generating magnetic flux, and a yoke part forming a path of the magnetic flux and including a first yoke extending from one of the poles, a second yoke extending from another one of the poles, and magnetic gaps disposed between the first yoke and the second yoke. The speaker unit further includes a voice coil disposed between the magnetic gaps and moving when applied with an electric current, and a diaphragm generating sound pressure while vibrating according to the movement of the voice coil. The first yoke includes magnetic plates protruding toward the second yoke, and the magnetic plates have thicknesses different from each other.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 6, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ho Jin Yoon, Min Kim, Tae Myun Kim, Seong Min Park, Won Youl Bae
  • Patent number: 9602913
    Abstract: A dual-frequency coaxial headphone including a headphone housing, a low-frequency speaker unit, and a high-frequency speaker unit. The headphone housing includes an accommodating space and a sound output hole. The accommodating space is communicated with the sound output hole. The low-frequency speaker unit is positioned in the accommodating space. The low-frequency speaker unit includes a housing and a low-frequency diaphragm disposed on the housing. The low-frequency diaphragm faces toward the sound output hole and includes a central through hole and an annular vibrating portion around the central through hole. The low-frequency diaphragm produces low-frequency sound waves toward the sound output hole by vibrations of the annular vibrating portion. The high-frequency speaker unit is disposed on the housing and is positioned in the central through hole. The high-frequency speaker unit is coaxial to the central through hole.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: March 21, 2017
    Assignee: JETVOX ACOUSTIC CORP.
    Inventor: To-Teng Huang
  • Patent number: 9537527
    Abstract: A user terminal apparatus is provided. The user terminal apparatus includes: a flexible display including: a main area; and a sub area comprising a curved portion and extending from the main area to a side portion of the user terminal apparatus; a housing configured to enclose the flexible display; a sound output hole provided between the flexible display and the housing and configured to output a sound from a call function; and a sound input hole configured to receive an input sound.
    Type: Grant
    Filed: August 14, 2015
    Date of Patent: January 3, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jae-young Huh, Yu-dong Bae, Shi-yun Cho
  • Patent number: 9427540
    Abstract: Provided is a high frequency oscillating ventilator comprising a housing assembly, a linear actuator, a linear coil, a piston mounted on a pushrod, a diaphragm dividing a housing into a first and second side and having an opening formed on the second side that is fluidly connected to the patient's airway for delivering gas thereto. The linear actuator is fixedly mounted to the housing assembly and has a linear coil coaxially disposed therewithin. A pushrod supports the linear coil on the linear actuator to allow relative axially sliding therebetween. The piston is directly mounted to the diaphragm such that reciprocation thereof as effectuated by the linear coil cooperating with the linear actuator alternately produces positive and negative pressure waves in the gas in the patient's airway.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: August 30, 2016
    Assignee: CareFusion 207, Inc.
    Inventors: Steven Duquette, Thomas Westfall, Steve Han
  • Patent number: 9380140
    Abstract: An electronic apparatus that may reduce sound leakage from a housing and the like vibrated by a vibrator and echo caused by the sound leakage is provided. An electronic apparatus includes a panel, a panel retainer for supporting the panel, and an element for vibrating the panel and thereby generating a vibration sound to be delivered via a human body, wherein a region of the panel near a disposing position of the element is thinner in a normal direction of the panel than a remaining region of the panel.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: June 28, 2016
    Assignee: KYOCERA Corporation
    Inventors: Shun Kazama, Akio Kihara, Kiyokazu Sato
  • Patent number: 9331558
    Abstract: Disclosed herein are multiple embodiments of a vibration transducer and actuator which combine an upper piece, a lower piece, a permanent magnet, an electromagnet coil, and, in some embodiments, a spring spacer.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: May 3, 2016
    Assignee: The Guitammer Company
    Inventor: Marvin L. Clamme
  • Patent number: 9241220
    Abstract: A speaker device includes a diaphragm, a frame supporting the diaphragm vibratably along a vibration direction, and a driving part disposed in proximity of the frame and vibrating the diaphragm corresponding to an audio signal. The driving part includes a magnetic circuit having a magnetic gap formed along a direction different from the vibration direction of the diaphragm, a voice coil supporting part having a voice coil and vibrating along the magnetic gap, and a vibration-direction-conversion part direction-converting the vibration of the voice coil supporting part and transmitting the vibration to the diaphragm. The vibration-direction-conversion part includes a link body angle-converting a link part formed between the voice coil supporting part and the diaphragm.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: January 19, 2016
    Assignees: Pioneer Corporation, Tohoku Pioneer Corporation
    Inventors: Yasumi Umetsu, Minoru Horigome
  • Patent number: 9232318
    Abstract: The present invention relates to a hearing device comprising a microphone (1) wherein the microphone (1) comprises a first opening (8), a second opening (9) and at least three compartments (2, 3, 4), a first membrane (6) being arranged between the first and the second compartment (2; 3) and a second membrane (7;) at least partly covering the third compartment (4), wherein the second and the third compartments (3, 4) are connected in communicative manner via a canal (11).
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: January 5, 2016
    Assignee: SONOVA AG
    Inventor: Alfred Stirnemann
  • Patent number: 9210513
    Abstract: A disclosed multi-ring coaxial audio speaker may include a treble sound unit, a first bass sound unit co-axially surrounding the treble sound unit, and a second bass sound unit co-axially surrounding the first bass sound unit. The first bass sound unit, the second bass sound unit, and the treble sound unit may be co-axially disposed with respect to each other. Bass vibration audio source points and a treble vibration audio source point may be at the same horizontal level, to achieve the broader electrical adjustability. The size of the audio speaker may be reduced as well.
    Type: Grant
    Filed: July 18, 2014
    Date of Patent: December 8, 2015
    Assignee: HUIYANG DONGMEI AUDIO PRODUCTS CO., LTD.
    Inventors: Ming-Chung Chu, Taniguchi Shoichi
  • Patent number: 9049511
    Abstract: A diaphragm is disclosed in the present disclosure. The diaphragm includes a middle layer, a first and a second adhesive layer attached on two side surfaces of the middle layer respectively, and a first layer adhered to the middle layer by the first adhesive layer and a second layer adhered to the middle layer by the second adhesive layer. The first adhesive layer is made of acrylic adhesive and the second adhesive layer is made of silica gel. A speaker using the diaphragm described above is also disclosed. The diaphragm can be used in a relatively wide temperature range and has a strong adaptability to the environment.
    Type: Grant
    Filed: March 3, 2014
    Date of Patent: June 2, 2015
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Tao Shen
  • Patent number: 9036839
    Abstract: A coaxial loudspeaker includes a permanent magnet positioned between a generally coaxially aligned first transducer having an associated permanent magnet and second transducer having an associated permanent magnet. In one embodiment, a magnetic cylinder is positioned between a woofer and a tweeter of a coaxial multi-way loudspeaker. An optional support structure, such as a plastic cylinder, may encompass the permanent magnet to enhance structural characteristics of the assembly. The woofer may include an external ceramic magnet extending around a center pole of the woofer.
    Type: Grant
    Filed: June 5, 2013
    Date of Patent: May 19, 2015
    Assignee: Harman International Industries, Inc.
    Inventors: Zhijun Zhao, Brian Sterling, John Yungman
  • Patent number: 9008343
    Abstract: An annular diaphragm compression driver for electro-acoustic conversion has an annular diaphragm, which bears a moving coil, and a compression driver housing with a closed housing base. Opposite the housing base is a sound wave routing element having a sound discharge channel. The compression driver also has an annular magnet system unit, which has an annular magnet gap (M) and a compression chamber, adjoining the magnet gap (M), for the annular diaphragm. The open exit end of the sound discharge channel is in slot form and its entry start is annular. The sound path between the compression chamber and the entry start contains an annular collecting space. The collecting space and the sound discharge channel contain a central sound guidance body having a portion which merges to match the slot-like exit end. The sound discharge channel is formed between the sound guidance body and the sound wave routing element.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: April 14, 2015
    Assignee: BMS Speakers GmbH
    Inventor: Dimitar Kirilov Dimitrov
  • Patent number: 8995696
    Abstract: A speaker includes a housing and four substantially similar electro-acoustic drivers secured inside the housing. The drivers are driven by substantially the same audio signal and are arranged such that the net mechanical vibrational force between the drivers and the housing is substantially zero. Four substantially similar passive radiators are secured inside the housing and driven by acoustic energy from the four drivers. The passive radiators are arranged such that the net mechanical vibrational force between the passive radiators and the housing is substantially zero.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: March 31, 2015
    Assignee: Bose Corporation
    Inventors: Roman N. Litovsky, Jason D. Silver, Darius Mobed
  • Patent number: 8995695
    Abstract: A speaker system includes: a first speaker unit having a predetermined directivity angle in the horizontal direction; and a pair of second speaker units which are disposed opposite to each other with the first speaker unit sandwiched between them when viewed in the vertical direction and which have a directivity angle in the horizontal direction greater than the directivity angle of the first speaker unit, wherein distances from the center of the first speaker unit to the centers of the pair of second speaker units are equal to each other, and the first speaker unit and the pair of second speaker units are disposed so as to face toward the same direction.
    Type: Grant
    Filed: October 25, 2011
    Date of Patent: March 31, 2015
    Assignee: Sony Corporation
    Inventors: Yoshio Ohashi, Kazuko Yamagishi, Yoshiyuki Kaku, Yoshihiro Iwami, Shin Yamaguchi
  • Patent number: 8965024
    Abstract: A rotary reciprocating acoustic transducer for producing sound in response to an applied electrical signal has a ported tubular housing having a generally cylindrical chamber with an interior lumen which is generally symmetrical about a central axis and opposing first and second linear reciprocating electrodynamic motors mounted over the tubular housing member's first and second open end, with a reciprocating rotatable transducer vane assembly with first and second rotating vanes projecting radially away from a central, axially aligned shaft driven by the first and second linear reciprocating motors.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: February 24, 2015
    Inventor: Doug Graham
  • Patent number: 8958592
    Abstract: An electronic device is provided. The electronic device includes a case, a microphone array housing consists of a first acoustic extending structure, a second acoustic extending structure, an interface IC, a first membrane and a second membrane. The case includes a first acoustic opening and a second acoustic opening. The first acoustic extending structure is connected to the first acoustic opening. The second acoustic extending structure is connected to the second acoustic opening. The first membrane receives a first acoustic signal via the first acoustic opening and the first acoustic extending structure. The second membrane receives a second acoustic signal via the second acoustic opening and the second acoustic extending structure.
    Type: Grant
    Filed: May 23, 2013
    Date of Patent: February 17, 2015
    Assignee: Fortemedia, Inc.
    Inventors: Yen-Son Paul Huang, Iou-Din Jean Chen, James Juei Son Lin
  • Patent number: 8929578
    Abstract: The invention provides, in some aspects, electronic devices with improved radiators (or “passive drivers”) comprising an elastomerically mounted mass in order to improve sound reproduction fidelity. The mass comprises a component of the device not normally used for such purpose—e.g.
    Type: Grant
    Filed: May 29, 2012
    Date of Patent: January 6, 2015
    Assignee: Dr. G Licensing, LLC
    Inventor: Godehard A. Guenther
  • Patent number: 8897472
    Abstract: An acoustic transducer comprises one or more electromagnetic motors that drive one or more sets of multiple diaphragms to provide acoustically efficient loudspeaker systems having dimensions that allow use in applications that would be difficult or impossible with traditional transducers. The diaphragms may be driven directly, inertially or fluidically. If diaphragms are driven by rods that pass through holes in the diaphragms, noise may be generated by air that leaks through the pass-through holes. This noise may be reduced or eliminated by measures that reduce or eliminate the air leakage.
    Type: Grant
    Filed: June 3, 2005
    Date of Patent: November 25, 2014
    Assignee: Tymphany HK Limited
    Inventors: Andrew David Unruh, Robert J. True, Edward T. Norcott, Jr., Jens-Peter Axelsson, Alireza Jabbari, David J. Prince, Kenneth L. Kantor, Ioannis Kanellakopoulos, Shaolin Wei
  • Patent number: 8837763
    Abstract: An inertially balanced miniature passive radiator full-range loudspeaker system is disclosed. In one embodiment the speaker system is a two-way system with low and high frequency components, where the low-frequency component is comprised of one active transducer and two passive radiators and the frequency range for this component is not outside of 10 Hz to 500 Hz. The low and high frequency components are individually optimized for operation in low and high frequency ranges respectively. By placing the passive radiators on opposing sides of an enclosure of the speaker system, the momentum generated by the motion of each of the passive radiators substantially cancels when the passive radiators are in phase. A passive radiators may be fitted with a voice-coil electrically connected to a corresponding voice-coil on the other passive radiator in a pair such that the generated back EMF resists out of phase motion of the passive radiators.
    Type: Grant
    Filed: June 27, 2012
    Date of Patent: September 16, 2014
    Assignee: Cue Acoustics, Inc.
    Inventors: Samuel L. Millen, Lewis S. Athanas
  • Patent number: 8831248
    Abstract: A loudspeaker is described. The loudspeaker includes two or more segmentations of a planar radiator. Each of the segmentations has an associated frequency dependent velocity magnitude and phase with substantially uniform surface pressure. The two or more segmentations provide a substantially uniform radiation pattern across a wide range of acoustic frequencies. Apparatus, computer readable media and methods are also described.
    Type: Grant
    Filed: August 4, 2011
    Date of Patent: September 9, 2014
    Assignee: Nokia Corporation
    Inventors: Timothy J. Mellow, Leo M. J. Karkkainen
  • Patent number: 8818006
    Abstract: A loudspeaker system includes an enclosure surrounding a plurality of loudspeakers. The plurality of loudspeakers are disposed in series along a straight line in the enclosure. The enclosure includes a front panel, a back panel and side panels. The front panel, the side panels, and the back panel are disposed parallel to the straight line on which the loudspeakers are arranged. The side panels are provided with a front slit and a back slit. The back slit is disposed at an opposite side of the front slit in the enclosure. Sounds emitted to the upper and lower sides of diaphragms of the loudspeakers are separated from each other such that the sounds are prevented from mixing with each other. This provides a loudspeaker system capable of achieving desired sound pressure-frequency characteristics.
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: August 26, 2014
    Assignee: Panasonic Corporation
    Inventors: Kenji Yamauchi, Masatoshi Okuyama, Shoji Nakajima, Satoshi Takayama, Satoshi Koura, Yachiyo Shimokawatoko, Kazuhiro Oshika, Hideaki Inoue
  • Patent number: 8818009
    Abstract: A dual diaphragm dynamic type microphone transducer that, among other things, provides control of source/receiver proximity effects without sacrificing professional level dynamic microphone performance.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: August 26, 2014
    Assignee: Shure Acquisition Holdings, Inc.
    Inventors: Mark W. Gilbert, Charles S. Argento, Roger Stephen Grinnip, III
  • Patent number: 8792672
    Abstract: Moving armature receiver assemblies wherein a first U-shaped armature and a second U-shaped armature are configured for suppression of vibration of a housing structure along a longitudinal housing plane. The first armature has a fixed leg and a deflectable leg both extending parallelly to a first longitudinal armature plane and mechanically and magnetically interconnected through a first curved linkage portion. Likewise, the second armature has a fixed leg and a deflectable leg both extending parallelly to a second longitudinal armature plane and mechanically and magnetically interconnected through a second curved linkage portion. In some configurations, the deflectable legs of the first and second U-shaped armatures are configured for oppositely directed displacement along an orthogonal plane extending perpendicularly to the longitudinal housing plane so as suppress vibration of the housing structure in the orthogonal plane.
    Type: Grant
    Filed: March 16, 2012
    Date of Patent: July 29, 2014
    Assignee: Sonion Nederland B.V.
    Inventors: Aart Zeger van Halteren, Andreas Tiefenau, Adrianus Maria Lafort
  • Patent number: 8761418
    Abstract: A microelectromechanical loudspeaker array includes a plurality of microelectromechanical loudspeaker elements each having a diaphragm element configured to be deflected from a neutral position into at least one deflection position to produce a sound pulse. The array further includes an actuation device which is configured to put the diaphragm element into the at least one deflection position from the neutral position on the basis of drive signals. The array further includes a control device coupled to the plurality of loudspeaker elements. The control device is configured to send, in each case at a driving time, (i) a first drive signal configured to produce a sound pulse by actuating the diaphragm element, and (ii) a respective second drive signal configured to relax the diaphragm element into the neutral position during a predetermined period of time after the driving time to the actuation device of at least one of the loudspeaker elements.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: June 24, 2014
    Assignee: Robert Bosch GmbH
    Inventors: Ando Feyh, Stefan Zimmermann
  • Patent number: 8755558
    Abstract: A speaker capable of suppressing deterioration of acoustic efficiency while allowing miniaturization of the speaker includes a first unit and a second unit each of which outputs sound. The first unit includes a diaphragm which vibrates back and forth to radiate sound; and plural suspensions which support, at different positions, an outer periphery of the diaphragm. At least one of air passages for channeling sound from the second unit to the outside is provided between the plural suspensions.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: June 17, 2014
    Assignee: Panasonic Corporation
    Inventor: Shuji Saiki
  • Patent number: 8750540
    Abstract: An omnidirectional speaker having a high frequency driver, which generates sound over a high frequency range and which has a first diameter, and a high frequency waveguide having a second diameter larger than the first diameter. A first midrange driver and a second midrange driver have a third diameter and a fourth diameter, respectively. Each midrange driver generates sound over a middle frequency range and the first midrange driver faces the second midrange driver. First and second midrange waveguides have a fifth diameter and a sixth diameter, respectively, and correspond to the first and second midrange drivers, respectively. The fifth diameter is larger than the third diameter and the sixth diameter is larger than the fourth diameter. Both of the midrange frequency waveguides are positioned between the first midrange driver and the second midrange driver so as to block a direct path from the first midrange driver to the second midrange driver.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: June 10, 2014
    Assignee: Dream Audiolab Pte. Ltd.
    Inventor: Kok Leong Tan
  • Patent number: 8737674
    Abstract: A housed loudspeaker array includes a first substrate having a plurality of loudspeaker elements formed therein, a second substrate fixed at a first surface of the first substrate in a flip-chip manner and comprising a plurality of orifices that are aligned with the loudspeaker elements of the plurality of loudspeaker elements of the first substrate, and a cover applied to a second surface of the first substrate opposite to the first surface. A method for manufacturing the housed loudspeaker array is also disclosed.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: May 27, 2014
    Assignee: Infineon Technologies AG
    Inventor: Alfons Dehe
  • Patent number: 8670580
    Abstract: An electronic device is provided, including a conductive substrate, an electret diaphragm, a plurality of spacers, a first electrode, and two second electrodes. The conductive substrate has a plurality of openings. The spacers are disposed between the conductive substrate and the electret diaphragm to define an acoustic projecting portion and two acoustic receiving portions on the electret diaphragm. The first electrode is disposed on the acoustic projecting portion and coupled with the conductive substrate for generating an acoustic signal. The second electrodes are disposed on the acoustic receiving portions and coupled with the conductive substrate, wherein the acoustic receiving portions receive the acoustic signal and vibrate to vary an electrical field between the second electrodes and the conductive substrate.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: March 11, 2014
    Assignee: HTC Corporation
    Inventor: Fang-Ching Lee