Acoustic Enclosure Patents (Class 381/345)
  • Patent number: 11140481
    Abstract: A wireless speaker assembly for broadcasting audio and charging an electronic device includes a housing that defines an interior space. A first battery, a microprocessor, and a transceiver are coupled to the housing and are positioned in the interior space. The microprocessor is operationally coupled to the first battery and the transceiver. A speaker and a plurality of connectors are coupled to the housing and are operationally coupled to the microprocessor. The transceiver is configured to receive an audio signal from the electronic device, positioning the microprocessor to command the speaker to broadcast the audio signal. A respective connector is configured to couple to a charging cord of the electronic device to charge a second battery that is positioned in the electronic device.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 5, 2021
    Inventor: Phil Marino
  • Patent number: 11134338
    Abstract: A speaker includes a vibrating body having an annular valley portion recessed rearward and a diffuser having an annular or arcuate base part, which is positioned so that an end of the base part on the side of the vibrating body is opposed to the valley portion. The base part is provided, at the end on the side of the vibrating body, with one or more recessed parts from which distance to the vibrating body is larger than a distance of the other portion of the end to the vibrating body, each of the recessed parts being formed in any one of a sine-wave shape, a triangular-wave shape and an arc shape.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: September 28, 2021
    Assignee: JVCKENWOOD CORPORATION
    Inventors: Yuji Negishi, Kazuyuki Inagaki
  • Patent number: 11026017
    Abstract: The present invention relates to a loudspeaker including an enclosure having front portion, side portions and back portion defining an inner volume, the front portion is formed as a waveguide surface and includes at least one driver in the center of the waveguide surface and is capable to radiate the main acoustic power of the loudspeaker to ambient volume in direction of first acoustic axis, and an additional driver attached to the enclosure. In accordance with the invention the additional driver is attached inside the enclosure such that a sub volume is formed inside the inner volume, the sub volume limited by the driver, spacers between the driver and the front portion, and the front portion of the enclosure, and at least one port is adapted to open from the sub volume to ambient volume either to side portion or back portion of the enclosure and at least one resonator acoustically connected to the sub volume, the resonator being tuned to at least one of unwanted resonances of the sub volume.
    Type: Grant
    Filed: April 21, 2017
    Date of Patent: June 1, 2021
    Assignee: Genelec Oy
    Inventors: Aki Mäkivirta, Juha Holm, Jussi Väisänen, Siamäk Naghian, Ilpo Martikainen
  • Patent number: 11026012
    Abstract: An earphone includes a housing, the speaker unit disposed in the housing, a cover coupled with the housing and including a nozzle, a first space portion disposed in front of the speaker unit, and a second space portion disposed in the rear of the speaker unit and partitioned off from the first space portion. Here, the speaker unit includes a cylindrical yoke with an open top, a magnet fixed to a bottom surface of an inside of the yoke, a plate fixed to a top surface of the magnet, a voice coil disposed between an inner circumference of the yoke and outer circumferences of the magnet and the plate, a vibration plate disposed above the plate and to which the voice coil is fixed, a cap coupled with the yoke, and a frame coupled with the yoke and the cap.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: June 1, 2021
    Assignee: ALMUS CORP.
    Inventors: Ju Heon Ko, Byung Il Min, Jeong Kwon Park, Yeong Jae Lee
  • Patent number: 10932032
    Abstract: An acoustic device includes a first chamber, a first through hole, a vibration structure, and a separation structure. The first chamber includes a first end and a second end. The first through hole is defined at the first end of the first chamber. The vibration structure is disposed at the second end of the first chamber and is configured to transmit an acoustic wave away from the first chamber. The separation structure is disposed within the first chamber and divides the first chamber into a first sub-chamber and a second sub-chamber. The separation structure defines a second through hole connecting the first sub-chamber and the second sub-chamber.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: February 23, 2021
    Assignee: ADVANCED SEMICONDUCTOR ENGINEERING, INC.
    Inventor: Ming-Tau Huang
  • Patent number: 10891934
    Abstract: Described are methods and systems for broad-band active reduction of noise in target spaces, such as spaces around headrests in aircraft cabins. Systems describe herein are effective over wide frequency ranges without causing undesirable amplification at any subrange ranges. Specifically, a system comprises a speaker and a resonator, both coupled to an enclosure. The interior space of the resonator is in fluid communication with the enclosed space of the enclosure, allowing the resonator to reduce the amplitude of unwanted amplification by the audio reducing sound generated by the speaker. The amplitude is reduced in a selected frequency range, which may correspond to an expected amplification for this particular system. The resonator may partially extend into the enclosure or may be completely incorporated into the enclosure. Some examples of the resonator include a Helmholtz resonator, a passive radiator, a quarter wave resonator, a pipe resonator, and an acoustic metamaterial.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 12, 2021
    Assignee: The Boeing Company
    Inventors: Steven F. Griffin, Adam R. Weston, Mark M. Gmerek
  • Patent number: 10798476
    Abstract: Disclosed herein are portable devices and methods for their use.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: October 6, 2020
    Assignee: Vestel Elektronik Sanayi Ve Ticaret A.S.
    Inventor: Cagdas Döner
  • Patent number: 10757502
    Abstract: A speaker includes a frame, a partition wall and a pitch-adjustment ring. The partition wall is coupled with the frame to isolate a high-pitched sound zone from a low-pitched sound zone. A pitch-adjustment ring is rotatably coupled to the frame and has at least one permeable section and at least one non-permeable section. The pitch-adjustment ring is rotatable to align the at least one permeable section with the high-pitched sound zone or the low-pitched sound zone.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: August 25, 2020
    Assignee: MERRY ELECTRONICS(SHENZHEN) CO., LTD.
    Inventors: Tsai-Ti Lai, Chun-Pin Chen
  • Patent number: 10721551
    Abstract: For example, a headphone includes a headband, a first housing with a first cushion and a first size selector, and a second housing with a second cushion and a second size selector. A linkage connects the first size selector to the second size selector. If the linkage is engaged, moving the first size selector in a first direction causes the first cushion and the second cushion to simultaneously increase from a first size to a second size. Moving the first size selector in a second direction causes the first cushion and the second cushion to simultaneously decrease from the second size to the first size. In the first size, the first and second cushion have supra-aural properties. In the second size, the first and the second cushion have circum-aural properties. If the linkage is disengaged, a size of the first cushion and the second cushion may be independently adjusted.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: July 21, 2020
    Assignee: Dell Products L.P.
    Inventors: Sathish Bikumala, Parminder Singh Sethi, Anshul Saxena
  • Patent number: 10567869
    Abstract: Disclosed is a sound-absorbing component, comprising a housing and sound-absorbing particles filled in the housing. An antistatic material is added to the materials from which the housing is made, or the antistatic material is coated on the surface of the housing. Also disclosed is a speaker module applying the sound-absorbing component. The sound-absorbing component of the present invention greatly increases the fill rate of the sound-absorbing particles in the housing, thus allowing the space of the rear acoustic cavity of the speaker module applying the sound-absorbing component to be fully utilized, and allowing the sound-absorbing particles to fully exert the effects thereof in improving the acoustic properties of the speaker module.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: February 18, 2020
    Assignee: GOERTEK INC.
    Inventors: Xiaodong Cao, Jinli Liu
  • Patent number: 10516936
    Abstract: A speaker includes a frame and a partition wall coupled with the frame to define a boundary between a high-pitched sound zone and a low-pitched sound zone. The high-pitched sound zone includes an electromagnetic component accommodating area and plural discontinuous sound chamber extension areas. The electromagnetic component accommodating area and the plural discontinuous sound chamber extension areas are fluid-communicable.
    Type: Grant
    Filed: August 23, 2018
    Date of Patent: December 24, 2019
    Assignee: MERRY ELECTRONICS (SHENZHEN) CO., LTD.
    Inventors: Tsai-Ti Lai, Chun-Pin Chen
  • Patent number: 10500676
    Abstract: An actuator utilizes a voice coil motor with one or more voice coil windings supported on a light weight moveable bobbin that connects at one end to move an object rapidly up to a small number of millimeters translationally along a system axis. The bobbin moves over a distal portion of a center pole of a stator, which supports the voice coil motor magnets. The pole, which acts as a flux path for the voice coil motor, also provides a thin film of air in a gap between the pole and the bobbin via an air path and corresponding holes at the distal end of the pole. The bobbin moves translationally relative to the pole on the thin film of air under the control of the voice coil motor.
    Type: Grant
    Filed: November 30, 2016
    Date of Patent: December 10, 2019
    Assignee: FARO TECHNOLOGIES, INC.
    Inventors: Carl Brian Candiloro, Bradley Hunter, Kurt Sidor, Mark S Longmuir
  • Patent number: 10453438
    Abstract: Described are methods and systems for broad-band active reduction of noise in target spaces, such as spaces around headrests in aircraft cabins. Systems describe herein are effective over wide frequency ranges without causing undesirable amplification at any subrange ranges. Specifically, a system comprises a speaker and a resonator, both coupled to an enclosure. The interior space of the resonator is in fluid communication with the enclosed space of the enclosure, allowing the resonator to reduce the amplitude of unwanted amplification by the audio reducing sound generated by the speaker. The amplitude is reduced in a selected frequency range, which may correspond to an expected amplification for this particular system. The resonator may partially extend into the enclosure or may be completely incorporated into the enclosure. Some examples of the resonator include a Helmholtz resonator, a passive radiator, a quarter wave resonator, a pipe resonator, and an acoustic metamaterial.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: October 22, 2019
    Assignee: The Boeing Company
    Inventors: Steven F. Griffin, Adam R. Weston, Mark M. Gmerek
  • Patent number: 10433073
    Abstract: An electroacoustic transducer includes a dynamic speaker that generates a first acoustic sound, and a piezoelectric speaker that generates a second acoustic sound. The sum of the sound pressures of the first and second acoustic sounds in a crossover frequency range of the sound pressure of the first acoustic sound and the sound pressure of the second acoustic sound, is adjusted to be equal to or greater than 0.5 times the sound pressure of the first acoustic sound in the crossover frequency range so as to improve the acoustic properties in the crossover frequency range.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: October 1, 2019
    Assignee: TAIYO YUDEN CO., LTD.
    Inventors: Shigeo Ishii, Hiroshi Hamada, Yutaka Doshida, Takashi Tomita
  • Patent number: 10419835
    Abstract: An electronic device includes a first speaker for generating a first sound wave; a first chamber coupled to a first side of the first speaker for outputting the first sound wave generated by the first speaker; a second chamber coupled to a second side of the first speaker; a functional device in the second chamber including at least one functional device that generates heat during operation; and a hollow duct located in the second chamber for transporting air from the second chamber to an outlet of the hollow duct, dissipating heat generated by the functional device.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: September 17, 2019
    Assignee: LENOVO (BEIJING) CO., LTD.
    Inventors: Zhicheng Zhang, Honglei Zhu, Xiaozhong Li, Degui Zhang, Dianyong Yin
  • Patent number: 10405085
    Abstract: The present invention provides a receiver assembly comprising a receiver and an assembly housing. The receiver comprises a sound outlet configured to outlet sound from the receiver. The receiver is arranged at least partly within the assembly housing. The assembly housing comprises an assembly sound outlet. The sound outlet is arranged in communication with the assembly sound outlet for outlet of sound from the receiver via the assembly sound outlet. A vibration dampening element connects the sound outlet and the assembly sound outlet. The vibration dampening element is formed by an elastic foil and is compliant to reduce vibrations from the receiver to the assembly housing.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: September 3, 2019
    Assignee: Sonion Nederland B.V.
    Inventors: Andreas Tiefenau, Laurens de Ruijter, Oleg Antoniuk, Nicolaas Maria Jozef Stoffels, Umut Tabak, Johannes de Jonge, Rasmus Voss, Caspar Titus Bolsman, Arno W. Koenderink
  • Patent number: 10382859
    Abstract: A loudspeaker comprises an enclosure, at least one dynamic driver mounted in the enclosure, and at least one porous monolithic block comprises of a gas adsorbing material and a binder. The at least one porous monolithic block comprises a plurality of pores and is mounted within the enclosure.
    Type: Grant
    Filed: November 15, 2017
    Date of Patent: August 13, 2019
    Assignee: Sound Solutions International Co., Ltd.
    Inventors: Christian Lembacher, Christoph Schmauder, Gordon Schriefer
  • Patent number: 10349173
    Abstract: A nonlinear control system and a loudspeaker protection system. In particular, a nonlinear control system including a controller, an audio system, and a model is disclosed. The controller is configured to accept one or more input signals, and one or more estimated states produced by the model to produce one or more control signals. The audio system includes one or more transducers configured to accept the control signals to produce a rendered audio stream therefrom. An active loudspeaker with an integrated amplifier is disclosed. A loudspeaker protection system and a quality control system are disclosed. More particularly, a system for clamping the input to a loudspeaker dependent upon a bank of representative models is disclosed.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 9, 2019
    Assignee: CIRRUS LOGIC, INC.
    Inventors: Pär Gunnars Risberg, Erik Lindahl, Marcus Arvidsson, Daniel Stahre, Landy Toth
  • Patent number: 10284936
    Abstract: Disclosed is a receiver comprises an external housing, the external housing comprises a first housing, a second housing and a third housing adapted with each other from top to bottom, a vibration system is accommodated in a cavity formed by the external housing and comprises a vibration diaphragm dividing the receiver into a front sound cavity and a rear sound cavity, the third housing is injection-molded and provided with a sound outlet hole of the rear sound cavity which is in communication with outside environment. The third housing is coupled with a mesh fabric at a position corresponding to the sound outlet hole by injection-molding, and the mesh fabric isolates the rear sound cavity from the outside environment. The receiver can effectively prevent performance degradation of a product caused by impurities of the outside environment falling into the rear cavity, thereby providing a function of product protection.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: May 7, 2019
    Assignee: GOERTEK INC.
    Inventors: Linjin Mao, Gang Chen
  • Patent number: 10219057
    Abstract: An electronic device is disclosed that includes one or more sealed audio modules that are unaffected by changes in the internal pressure within the electronic device. The audio modules can also include one or more features that increase the audible bandwidth of the electronic device.
    Type: Grant
    Filed: September 8, 2017
    Date of Patent: February 26, 2019
    Assignee: Apple Inc.
    Inventors: Thomas R. Luce, Anthony P. Grazian, Hongdan Tao, Christopher Wilk, Daniel W. Jarvis, David A. Pakula
  • Patent number: 10171930
    Abstract: Several embodiments of a localized audibility sound system are disclosed. In an embodiment designed for persons playing a video game, configurations are disclosed which limit propagation of low-frequency sound to nearby areas or rooms, both for group and single-person play. Other embodiments are disclosed for use in trade shows and the like, which limit propagation sound to nearby booths and areas, while providing a rich audio experience for persons in a defined area. Embodiments for use in conference-calling are disclosed which facilitate selective telephonic transmission or recording of sounds spoken by persons around a conference table, while attenuating telephonic transmission or recording of other sounds created in the conference room such as typing on computer keyboards.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: January 1, 2019
    Inventor: Kevin Brown
  • Patent number: 10027784
    Abstract: An apparatus including a sound transducer; and a housing having the sound transducer connected thereto. The housing forms a substantially sealed air space back cavity acoustically coupled to the sound transducer. The housing includes a housing member having a first dividing structure located in the back cavity to connect two adjacent air mass sections of the back cavity, where the dividing structure includes at least one aperture to permit travel of sound waves through the at least one aperture between the air mass sections.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: July 17, 2018
    Assignee: Nokia Technologies Oy
    Inventors: Thomas Benedict Slotte, Anders Johan Engberg
  • Patent number: 9972296
    Abstract: An acoustic-to-electronic bass drum conversion kit describes the parts needed to convert an acoustic bass drum into an electronic bass drum trigger and amplification device. My invention includes a front panel assembly which has at least one loudspeaker mounted on a panel which fits over the front of a bass drum shell, and a rear panel assembly which has an amplifier and an impact sensitive kick pad mounted on a rear panel. After discarding the front and rear drum heads and hoops, the front and rear panel assemblies are attached to the bass drum shell using conventional lug, tension rod and claw bracket technology. My invention provides the desired look of an acoustic bass drum for drummers who desire an electronic drum amplification system.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 15, 2018
    Inventor: Mark David Steele
  • Patent number: 9967653
    Abstract: This disclosure relates to speakers and more specifically to an array speaker for distributing music uniformly across a room. A number of audio drivers can be radially distributed within a speaker housing so that an output of the drivers is distributed evenly throughout the room. In some embodiments, the exit geometry of the audio drivers can be configured to bounce off a surface supporting the array speaker to improve the distribution of music throughout the room. The array speaker can include a number of vibration isolation elements distributed within a housing of the array speaker. The vibration isolation elements can be configured reduce the strength of forces generated by a subwoofer of the array speaker.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: May 8, 2018
    Assignee: Apple Inc.
    Inventors: Ethan L. Huwe, John H. Sheerin, Glenn K. Trainer
  • Patent number: 9936286
    Abstract: A loudspeaker device having housing and an acoustic transducer is disclosed. The housing has a transducer space for the acoustic transducer, and a back volume space. The back volume filled with a sound adsorber material and a foam material. The sound adsorber material in the back volume space is configured to virtually increase the size of the back volume space, and shift the resonant frequency of the back volume space. The foam material separates the sound adsorber from the transducer space and facilitates gas exchange and air flow within the back volume space and between the sound adsorber and the transducer space. The foam material is configured in different arrangements to facilitate the gas exchange and air flow.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: April 3, 2018
    Assignee: Sound Solutions International Co., Ltd.
    Inventors: Josef Herold, Christoph Schmauder
  • Patent number: 9930442
    Abstract: A sound production device for a vehicle includes: a speaker that causes a diaphragm to vibrate thereby producing sound; and a housing receiving the speaker and having a sound passage through which the sound produced by the speaker passes and a sound emission hole that causes the sound passed through the sound passage to externally emit. Plural resonant chambers having different resonant frequencies are defined in the sound passage, such that the sound passage has a labyrinth structure that is able to prevent a foreign substance form entering the diaphragm from the sound emission hole.
    Type: Grant
    Filed: May 27, 2015
    Date of Patent: March 27, 2018
    Assignee: ANDEN CO., LTD.
    Inventors: Susumu Miyata, Makoto Tsuruta
  • Patent number: 9734983
    Abstract: To provide a charged particle radiation apparatus including a soundproof cover that highly realizes both suppression of image defects due to a specific frequency and improvement in quake resistance. A charged particle radiation apparatus including a box-shaped soundproof cover having a plurality of wall surfaces, the soundproof cover including a plurality of columnar bodies forming a frame of the box shape body and a box-shaped acoustic energy absorbing structure provided in a connecting part of the plurality of columnar bodies and attached to support at least the two columnar bodies, is proposed.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: August 15, 2017
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Daisuke Mutou, Shuichi Nakagawa, Masaki Mizuochi, Toshihiko Shimizu, Hirofumi Motoshiromizu, Eisuke Kamide
  • Patent number: 9699548
    Abstract: The present invention discloses a miniature loudspeaker module, a method for enhancing frequency response of a miniature loudspeaker module, and an electronic device. The method comprises the steps of: additionally providing a passive driver in a cavity where an active driver of a miniature loudspeaker module is located, the passive driver and the active driver radiating together, wherein, after the passive driver is additionally provided in the miniature loudspeaker module, the amplitude of a vibrating diaphragm of the active driver shows a local dip on frequency bands below a resonant frequency point F0, and the lowest point of the local dip is corresponding to a frequency point Fb; and, perform, according to amplitude characteristics of the vibrating diaphragm of the active driver of the miniature loudspeaker module additionally provided with the passive driver, matching enhancement to an input signal of the active driver.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: July 4, 2017
    Assignee: Goertek Inc.
    Inventor: Kang Hou
  • Patent number: 9578412
    Abstract: Intra-concha earphones are disclosed. In an embodiment, an intra-concha earphone includes a housing having a rear space divided into a back volume, a bass duct, and a vent chamber between a driver and a rear wall. The vent chamber may be acoustically coupled with the back volume through both an acoustic port and the bass duct. Furthermore, the vent chamber may be acoustically coupled with a surrounding environment through a vent port, which may be a sole acoustic opening in the rear wall. Thus, sound emitted by the driver may propagate through the acoustic port and the bass duct to meet in the vent chamber before being discharged through the vent port to the surrounding environment. Other embodiments are also described and claimed.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: February 21, 2017
    Assignee: Apple Inc.
    Inventors: Yacine Azmi, Esge B. Andersen, Michael B. Howes, Jonathan S. Aase
  • Patent number: 9571934
    Abstract: An acoustic device with an enclosure and a first passive radiator structure which includes a first passive radiator diaphragm. The first passive radiator structure has an effective radiating area and a first mass, and is mounted to the enclosure such that its diaphragm can vibrate relative to the enclosure. There is a second passive radiator structure which includes a second passive radiator diaphragm. The second passive radiator structure has substantially the same effective radiating area as the first passive radiator structure, and is mounted to the enclosure such that its diaphragm can vibrate relative to the enclosure. At least one active electro-acoustic transducer is mounted to the second passive radiator structure such that it moves when the diaphragm vibrates. The second passive radiator structure and the active transducer together have a second mass that is substantially greater than the mass of the first passive radiator structure.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: February 14, 2017
    Assignee: Bose Corporation
    Inventor: Joseph A. Stabile
  • Patent number: 9473853
    Abstract: An acoustic unit, which is arranged for coupling with a vibration system to produce an audio sound, includes a frame, a vibration member for being reciprocatingly moved in response to the vibration system; and a resilient suspension which is provided around the vibration member and is located between the vibration member and the frame, wherein the suspension has a stretching section integrally extended from the vibration member and a cushioning section integrally extended from the stretching section to the frame. The cushioning section only allows the stretching section to displace along a direction the same as a vibration direction of the vibration member to restrict a vibrating movement of the vibration member. The acoustic unit is incorporated with an acoustic module, wherein when a loudspeaker of the acoustic module operates, the acoustic unit synchronously vibrates to provide an enhanced low frequency audio effect.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: October 18, 2016
    Assignee: Tang Band Industries Co., Ltd.
    Inventor: Hsin Min Huang
  • Patent number: 9402136
    Abstract: Provided are a sound generator and an electronic apparatus using the same. The sound generator includes a vibrating body, an exciter that is attached to the vibrating body and bends to vibrate the vibrating body in the thickness direction of the vibrating body by vibrating the exciter itself, an enclosure that is joined to the vibrating body and forms a first space enclosed together with the vibrating body, and a duct that connects between the first space and the external space. A spacing between the vibrating body and the surface of the enclosure facing the vibrating body is smaller than ½ of the length of the wavelength of resonance having the lowest frequency in the bending vibration of the vibrating body.
    Type: Grant
    Filed: September 27, 2013
    Date of Patent: July 26, 2016
    Assignee: KYOCERA CORPORATION
    Inventors: Noriyuki Kushima, Shuichi Fukuoka, Takeshi Hirayama, Saneaki Akieda, Atsushi Ishihara, Kentarou Miyazato
  • Patent number: 9398356
    Abstract: A loudspeaker (130) comprises an electro-acoustic transducer such as a loudspeaker driver (135) mounted to a housing. The housing has side walls (132) subjected to a compressive force by bolts (50), which may extend between rigid end plates (133, 134). The side walls may be formed by a stack of plates. The housing defines a recess such that when the loudspeaker driver (135) is mounted in the housing, there is a cavity behind the loudspeaker driver (135). Such a housing may be used for a range of different electro-acoustic transducers. The compressive force suppresses resonance and improves performance of the electro-acoustic transducer.
    Type: Grant
    Filed: October 4, 2013
    Date of Patent: July 19, 2016
    Assignee: FLARE AUDIO TECHNOLOGIES LIMITED
    Inventor: Davies Richard Roberts
  • Patent number: 9319773
    Abstract: A headphone comprising: at least one speaker housing comprising at least a first surface with a first opening and a second surface with second opening; at least one resonator designed to cover at least a portion of the second opening of the second surface; at least one speaker, at least a portion of the speaker disposed within the speaker housing proximate to the first opening of the first surface of the speaker housing.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: April 19, 2016
    Assignee: IdeaVillage Products Corporation
    Inventor: Greg E. Blonder
  • Patent number: 9288574
    Abstract: The invention relates to a circuit (100) for use with a loudspeaker (104) having a first differential input terminal (t1) and a second differential input terminal (t2), the circuit (100) comprising: a differential power amplifier (103) having a first differential output terminal (t3) operatively connected to the first differential input terminal (t1) of the loudspeaker (104) and a second differential output terminal (t4) operatively connected to the second differential input terminal (t2) of the loudspeaker (104);—a first resistor (RS1) disposed between the first differential output terminal (t3) of the differential power amplifier (103) and the first differential input terminal (t1) of the loudspeaker (104); a second resistor (RS2) disposed between the second differential output terminal (t4) of the differential power amplifier (103) and the second differential input terminal (t2) of the loudspeaker (104).
    Type: Grant
    Filed: February 11, 2013
    Date of Patent: March 15, 2016
    Assignee: ST-ERICSSON SA
    Inventors: Sergio Pernici, Germano Nicollini
  • Patent number: 9281110
    Abstract: An external-magnet-type magnetic circuit includes an iron core and at least one composite magnet coaxially mounted around the iron core. The composite magnet has two magnetic poles with field directions thereof substantially perpendicular to each other, wherein one of the magnetic poles has the field direction thereof pointing to the iron core, and a magnetism-guiding plate being deposited on the other magnetic pole of the composite magnet and being separated from the iron core by a magnetic gap. Thereby, the composite magnet provides high magnetic flux density in relatively small volume, without the additional use of any magnetism-guiding yokes, and thus is particularly suitable for small-size amplifiers where it helps to improve acoustic sensitivity and acoustic output performance.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: March 8, 2016
    Assignee: MERRY ELECTRONICS (SUZHOU) CO., LTD.
    Inventors: Chien Ju Wu, Wen Hong Wang, Chun Pin Chen
  • Patent number: 9226061
    Abstract: A speaker assembly provides a system for reproducing low frequency sound and for directing the sound generated both toward and away from a listener, or in any direction desired, by use of an acoustic dipole. The speaker assembly beneficially provides a significantly improved low frequency sound quality, while reducing sound and vibration transmitted to an adjacent space via an airborne or structure-borne pathway. The speaker assembly also beneficially provides for a suitable use in a plurality of environments, including, without limitation, an outdoor environment, a residential setting, or a professional application.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: December 29, 2015
    Inventor: Daniel T. Lilley, Jr.
  • Patent number: 9204211
    Abstract: A soundskin for a pad-type device comprises a housing, at least one microphone, a signal processing device, at least one audio transducer, and an acoustic waveguide. The housing receives a pad-type device. The signal processing device receives a signal from a pad-type device when the pad-type device is received by the housing. The signal processing device provides a directive sound enhancement of the audio input signals based on room acoustics, such as reverberation, echo, noise, delay, frequency response, and/or speaker-positional information that is determined by the signal processing device. The audio transducer device generates an audible audio output in response to an audio signal output from the signal processing device. The acoustic waveguide receives the audible audio output and generates an enhanced bass audio output from the acoustic waveguide.
    Type: Grant
    Filed: March 13, 2012
    Date of Patent: December 1, 2015
    Assignee: Avnera Corporation
    Inventors: Robert C. Proebstel, Patrick A. Quinn, Manpreet S. Kharia, Thomas Irrgang, Nigel D. Waites, Ian J. Myles
  • Patent number: 9055360
    Abstract: A sonic projector system is disclosed. The sonic projector system includes: a left speaker cabinet system having a left sound projection component configured to project sound; a right speaker cabinet system having a right sound projection component configured to project sound; and a screen configured to receive the projected sound from the left speaker cabinet system and the projected sound from the right speaker cabinet system, where the screen includes a middle portion that receives and transforms the projected sound from the left speaker cabinet system and the projected sound from the right speaker cabinet system to a combined projected sound, where the screen is configured to distribute the combined projected sound to a specific area.
    Type: Grant
    Filed: April 7, 2014
    Date of Patent: June 9, 2015
    Inventor: Joseph W Johnson
  • Patent number: 9042592
    Abstract: An electronic device includes a first housing, a second housing engaged with the first housing, a circuit board enclosed between the first and second housings, two speakers, and an antenna. The speakers and the antenna are attached to two sides of the circuit board. The first housing defines two receiving recesses in a surface facing the circuit board and two first through holes each adjacent to one corresponding receiving recess. Each receiving recess defines a second through hole in a bottom. The speakers are received in the receiving recesses. The receiving recesses communicate with the vents to form front resonating chambers for the speakers. The circuit board defines two third through holes aligned with the first through holes and communicating with the recessed sections. The first, second, and third through holes, the recessed sections, and the vents communicate with each other to form back resonating chambers for the speakers.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: May 26, 2015
    Assignee: Chi Mei Communication Systems, Inc.
    Inventors: Wei-Rung Chen, Kuang-Hsien Wang
  • Publication number: 20150131836
    Abstract: It is possible to enable sound, such as music or words, to be caught clearly without raising the sound volume in particular in the use of a mobile terminal device. In a mobile terminal device provided with a speaker on a rear surface side, a sound guiding device that guides sound generated by the speaker in a front direction has a case that covers the speaker when attached to the mobile terminal device. A sound guiding section that guides sound generated by the speaker roughly in the front direction and a sounding port through which the guided sound is emit bed to the outside are provided at a position of the case corresponding to the speaker of the mobile terminal device when the case is attached to the mobile terminal device.
    Type: Application
    Filed: August 16, 2012
    Publication date: May 14, 2015
    Applicant: TRINITY, INC.
    Inventor: Tetsushi Hoshikawa
  • Patent number: 9008349
    Abstract: A speaker diaphragm of the present invention is formed by mixing polylactic acid as a plant-derived resin, bamboo fibers and a natural binder. It is thereby possible to realize a speaker diaphragm capable of obtaining sufficient sound velocity, while having low environmental load and high sound quality.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: April 14, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Yohei Jin, Yoshimichi Kajihara, Shinya Mizone
  • Patent number: 9008335
    Abstract: A directional sound generating apparatus and a directional speaker array including the same are disclosed. The directional sound generating apparatus includes a sound transducer, a reflection plate which is located behind the sound transducer, and a blocking plate which is provided between a front portion and a back portion of the sound transducer.
    Type: Grant
    Filed: September 7, 2009
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-woo Choi, Young-tae Kim, Jung-ho Kim, Sang-chul Ko
  • Patent number: 8995674
    Abstract: A composite sound dampening structure includes a first base layer of sound dampening material extending around and against an inside surface of a container and a second wedge layer of sound dampening material attached to an inside surface of the first base layer. The composite sound dampening structure provides improved acoustic dampening in relative small sound chambers. An audio test system generates a composite audio signal of multiple different audio signals that are combined together using linear superposition. The composite audio signal allows a device to be simultaneously tested with multiple different audio frequencies.
    Type: Grant
    Filed: May 30, 2012
    Date of Patent: March 31, 2015
    Assignee: Frye, Electronics, Inc.
    Inventor: George J. Frye
  • Patent number: 8991549
    Abstract: A three-dimensional air-adsorbing structure for use in a volume in which there is a time-varying acoustic field. The structure has a three-dimensional, unitary, skeletal, porous scaffold having scaffold openings distributed within its volume, where the scaffold openings make up at least about 50% of the volume of the scaffold, air-adsorbing material particles, and a hydrophobic binder that couples air-adsorbing material particles to each other to form agglomerates and couples particles and agglomerates to the scaffold. The structure has structure openings in the agglomerates and structure openings between agglomerates, such structure openings being open to the outside environment, wherein the cumulative volume of the structure openings that have an apparent diameter larger than about 0.
    Type: Grant
    Filed: June 22, 2014
    Date of Patent: March 31, 2015
    Assignee: Bose Corporation
    Inventor: Lifun Lin
  • Patent number: 8989427
    Abstract: An earphone includes a first acoustic chamber with one or more of a reactive element and a resistive element for acoustically coupling the first acoustic chamber with an environment external to the earphone. The earphone includes an acoustic transducer and a second acoustic chamber separated from the first acoustic chamber by the acoustic transducer. A housing supports the earphone from the concha of a wearer's ear and extends the second acoustic chamber at least to an entrance of an ear canal of the wearer's ear. A port acoustically couples the first and second acoustic chambers.
    Type: Grant
    Filed: June 6, 2013
    Date of Patent: March 24, 2015
    Assignee: Bose Corporation
    Inventors: Ryan C. Silvestri, Jason Harlow, Kevin P. Annunziato
  • Patent number: 8985268
    Abstract: A speaker enclosure may include a speaker enclosure frame with a back wall, a first, inner wall and a second, outer wall extending from the back wall. The first, inner wall may be longer than the second, outer wall such that a baffle attaches to the first, inner wall, but only attaches to the second, outer wall via the first, inner wall and the back wall.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: March 24, 2015
    Inventor: David A. Wilson
  • Publication number: 20150071474
    Abstract: An electro-acoustic driver including an acoustic waveguide includes an enclosure, an acoustic transmission line formed within the enclosure, and a plurality of acoustic transducers contained within the enclosure and disposed along a length of the acoustic transmission line. Each acoustic transducer is configured to emit acoustic energy directly into the acoustic transmission line at two separated locations along the length of the acoustic transmission line.
    Type: Application
    Filed: May 29, 2014
    Publication date: March 12, 2015
    Inventors: Geoffrey C. Chick, Carl Jensen, Brian M. Lucas
  • Publication number: 20150063621
    Abstract: A speaker assembly provides a system for reproducing low frequency sound and for directing the sound generated both toward and away from a listener, or in any direction desired, by use of an acoustic dipole. The speaker assembly beneficially provides a significantly improved low frequency sound quality, while reducing sound and vibration transmitted to an adjacent space via an airborne or structure-borne pathway. The speaker assembly also beneficially provides for a suitable use in a plurality of environments, including, without limitation, an outdoor environment, a residential setting, or a professional application.
    Type: Application
    Filed: August 27, 2014
    Publication date: March 5, 2015
    Inventor: Daniel T. Lilley, JR.
  • Patent number: 8967322
    Abstract: The present disclosure provides a speaker box including a main body portion and an upper plate connected to the main body portion. The main body portion includes a frame for receiving a speaker body therein. The frame has a cavity for housing the speaker body, a partition wall, and a groove separated from the cavity by the partition wall for preventing the frame from shrinking. A plurality of reinforcement ribs spaced from each other is disposed on an inner side wall opposite to the partition wall.
    Type: Grant
    Filed: October 28, 2013
    Date of Patent: March 3, 2015
    Assignee: AAC Technologies Pte. Ltd.
    Inventor: Xiong Zhang