Bass Reflex (e.g., Rear Wave) Patents (Class 381/349)
  • Patent number: 10390128
    Abstract: A battery powered wireless audio speaker comprising a passive radiator is disclosed. The perimeter portion of the passive radiator is sandwiched between the speaker chassis and the retention gasket that resides between an external overlying perforated cover to firmly secure the passive radiator. The construction is capable of being well suited to enhance and improve integrity to the seal between the passive radiator and the speaker chassis in strenuous environment conditions such as when a speaker is submerged in water.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: August 20, 2019
    Assignee: ZAGG Amplified, Inc.
    Inventor: Andy Fathollahi
  • Patent number: 10257607
    Abstract: The present invention is directed to a headphone device including zones to separate different frequency ranges for enhancing and improving sound quality. The headphone device includes more than one cavities and second auxiliary holes. The second auxiliary holes are configured for most bass or low-frequency to enter a second cavity through the second auxiliary holes and to have a better frequency division effect and to improve the audio quality of the headphone device.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: April 9, 2019
    Assignee: TRANSOUND ELECTRONICS CO., LTD.
    Inventors: Tseng Feng Wen, Jing Luen Wen, Hsin Hao Wen
  • Patent number: 10231041
    Abstract: Disclosed is a loudspeaker module which comprises a housing and a loudspeaker unit accommodated in the housing. The housing comprises a front cover, a first housing and a second housing, and a cavity is defined by the front cover, the first housing and the second housing. The loudspeaker unit is fixed in the cavity, and the cavity is divided into a front cavity and a rear cavity by the loudspeaker unit. The front cavity is a cavity defined by the loudspeaker unit, the front cover and the first housing. The loudspeaker unit comprises a vibration system and a magnetic circuit system. The front cover is provided with a chamber corresponding to a mounting position of the loudspeaker unit, and the cavity is isolated from the front cavity and the rear cavity and is provided with a ventilation structure in communication with external environment.
    Type: Grant
    Filed: November 11, 2015
    Date of Patent: March 12, 2019
    Assignee: GOERTEK INC.
    Inventors: Qing Miao, Chao Xu
  • Patent number: 10051375
    Abstract: A speaker box includes a housing which has a receiving space and a side wall having a sound hole, and a sound generator received in the receiving space and including a diaphragm including a dome and a periphery connected to the dome. The periphery includes a near-end which is near the sounding hole and a far-end which is farther the sounding hole. A compliance of the near-end is less than a compliance of the far-end.
    Type: Grant
    Filed: December 30, 2015
    Date of Patent: August 14, 2018
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Bin Cai, Yunxia Xu
  • Patent number: 10021468
    Abstract: Speaker protection systems can be configured to protect audio speakers from falls. In some embodiments, systems include a bottom cap coupled to a bottom portion of the speaker device. Systems can also include a top cap coupled to a top portion of the speaker device. The top cap can cover part of a top surface of the speaker device such that the top cap is configured to resist downward dislodgement of the top cylindrical cap. The top cap can be rotatably coupled to the bottom cap. Embodiments can enable variable shock absorption with resistance to deformation that increases as the magnitude of the deformation increases. This approach can maximize odds of speakers “surviving” falls from substantial heights.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: July 10, 2018
    Assignee: Innovelis, Inc.
    Inventor: Eric John Wengreen
  • Patent number: 9883280
    Abstract: [Object] To make it possible to improve an acoustic characteristic. [Solution] There is provided a headphone including a driver unit that includes a diaphragm, a housing that accommodates the driver unit, and forms a sealed-type front-face air chamber spatially blocked from an outside except for an opening for sound output on a front face side provided with the diaphragm of the driver unit, and an acoustic tube whose end is directly connected to a first ventilation hole provided in a frame of the driver unit, and that spatially connects a driver-unit rear-face air chamber formed between the frame and the diaphragm with the outside of the driver unit via a tube.
    Type: Grant
    Filed: July 2, 2014
    Date of Patent: January 30, 2018
    Assignee: SONY CORPORATION
    Inventors: Yuusuke Oosato, Takahiro Suzuki
  • Patent number: 9774959
    Abstract: A MEMS speaker that may include a membrane positioned in a first plane, wherein the membrane may be configured to oscillate at a first frequency thereby generating an ultrasonic acoustic signal; and an acoustic modulator that may include a blind and a shutter; wherein the blind may be positioned in a second plane; wherein the shutter may be positioned in a third plane; wherein the first plane, the second plane and the third plane may be substantially separated from each other; and wherein the acoustic modulator may be configured to (a) receive or generate a shutter control signal and a blind control signal, and (b) modulate, in response to the shutter control signal and the blind control signal, the ultrasonic acoustic signal such that an audio signal may be generated.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: September 26, 2017
    Assignee: DSP GROUP LTD.
    Inventor: Haim Kupershmidt
  • Patent number: 9674613
    Abstract: The present disclosure discloses a speaker box. The speaker box includes a housing which has a receiving space and a side wall having a sound hole, and a sound generator received in the receiving space and including a diaphragm including a dome and a periphery connected to the dome. The periphery includes a near-end which is near the sounding hole and a far-end which is farther the sounding hole. A width of the near-end of the periphery perpendicular to a vibration direction of the diaphragm is smaller than a width of the far-end of the periphery perpendicular to the vibration direction.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: June 6, 2017
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Yunxia Xu, Bin Cai
  • Patent number: 9602912
    Abstract: A high bass speaker monomer comprises a framework, a magnetic air loop component and a vibration membrane. The frame work is disposed at a central position of the frame work. A hollow structure is formed on the framework and around the magnetic air loop component. An isolation ring formed on the framework divides the hollow structure into at least one high tone region and bass region respectively located near and far away from the magnetic air loop component. The vibration membrane is disposed on the framework and covers the magnetic air loop component and the two regions. The high bass speaker monomer is disposed in a casing body to construct a high bass earphone structure. The isolation ring separates the high tone from the low tone to prevent them from mixing. Therefore, the sound of the earphone is more stable and the quality of the sound is better.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: March 21, 2017
    Assignee: TRANSOUND ELECTRONICS CO., LTD.
    Inventor: Tsengfeng Wen
  • Patent number: 9570521
    Abstract: A display device includes: a first display panel and a second display panel disposed to face each other; a backlight unit interposed between the first display panel and the second display panel; and a speaker unit including a first piezoelectric module and a second piezoelectric module sharing an enclosure and disposed to face each other, a first output unit configured to output sound produced from the first piezoelectric module, and a second output unit configured to output sound produced from the second piezoelectric module.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: February 14, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Tae Hee Lee, Yi Joon Ahn, Yong Suk Yeo
  • Patent number: 9326072
    Abstract: This application relates to a wearable speaker system with passive radiators and active driver speakers that are connected by tubes. Acoustic energy from each active driver speaker is projected through the tubes to each respective passive radiator, causing the passive radiators to vibrate and resonate in response to the acoustic energy to project the desired audible sounds to a user.
    Type: Grant
    Filed: January 10, 2014
    Date of Patent: April 26, 2016
    Assignee: Plastoform Industries Limited
    Inventors: Kin Man Tse, Chi Hung Matthew Chan
  • Patent number: 9288571
    Abstract: A loudspeaker system has a loudspeaker housing that comprises at least a first and a second housing chamber. The loudspeaker system has a bass loudspeaker that is mounted on a partition between the first housing chamber and the second housing chamber, wherein the back of the bass loudspeaker has the first housing chamber present and the front of the bass loudspeaker has the second housing chamber present. The partition contains at least one bass reflex opening. A phase correction element is arranged at the front of the bass loudspeaker in the second housing chamber. The bass reflex opening opens into the second housing chamber and is arranged in a region adjacent to the phase correction element.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: March 15, 2016
    Assignee: d&b audiotechnik GmbH
    Inventors: Matthias Christner, Nico Paul
  • Patent number: 9241206
    Abstract: A loudspeaker enclosure defined by one or more panels housing a drive unit. The drive unit includes a coil, a diaphragm, and a magnet. The magnet is decoupled from the one or more panels of the loudspeaker enclosure. Sound is generated by the movement of the diaphragm and complementary movement of the magnet, on application of an appropriate electrical signal to the coil. The moving diaphragm acts against a first volume of air within the enclosure, while the movement of a surface coupled to the magnet, acts against a second air volume, different from the first volume. The surface coupled to the magnet is decoupled from the one or more panels of the loudspeaker enclosure.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: January 19, 2016
    Assignee: B & W GROUP LTD
    Inventor: Stuart Michael Nevill
  • Patent number: 9071908
    Abstract: The present invention relates to a loudspeaker including a first driver, which is configured to produce a first frequency band and a corresponding first acoustic axis, a second driver, which is configured to produce a second frequency band, which is different from the first frequency band but may overlap in a crossover region, and which second frequency band has a second acoustic axis, and an enclosure enclosing said drivers and comprising a three dimensional wave guide positioned on a front surface of the enclosure and around the first driver.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: June 30, 2015
    Assignee: Genelec Oy
    Inventors: Jussi Väisänen, Ilpo Martikainen
  • Publication number: 20150139466
    Abstract: The present invention provides an improved loudspeaker enclosure comprising two opposing end sections arranged at a distance from each other and enclosing sections which connect the end sections over said distance, wherein the inner volume of the enclosure is defined by said sections. The enclosure also has a reflex port which comprises a reflex opening which is provided to the enclosure and adapted to exhaust internal pressure from the inner volume to outside the enclosure. The reflex port further comprises an inner reflex port former which connects the inner volume of the enclosure to the reflex opening for forming the reflex port. The reflex port former is formed by molding as an integral inner wall section which extends inwards from the inner surface of either or both end section.
    Type: Application
    Filed: April 2, 2013
    Publication date: May 21, 2015
    Applicant: GENELEC OY
    Inventors: Markku Kulomaki, Siamäk Naghian, Jussi Väisänen, Ilpo Martikainen, Harri Koskinen
  • Patent number: 9036827
    Abstract: Ultrasonic signals are used to transmit sounds from a modulated ultrasonic generator to other locations from which the sounds appear to emanate. In particular, an ultrasonic carrier is modulated with an audio signal and demodulated on passage through the atmosphere. The carrier frequencies are substantially higher than those of prior systems, e.g., at least 60 kHz, and the modulation products thus have frequencies which are well above the audible range of humans; as a result, these signals are likely harmless to individuals who are within the ultrasonic fields of the system. The signals may be steered to moving locations, and various measures are taken to minimize distortion and maximize efficiency.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: May 19, 2015
    Assignee: Massachusetts Institute of Technology
    Inventor: F. Joseph Pompei
  • Publication number: 20150086057
    Abstract: A loudspeaker system has a loudspeaker housing that comprises at least a first and a second housing chamber. The loudspeaker system has a bass loudspeaker that is mounted on a partition between the first housing chamber and the second housing chamber, wherein the back of the bass loudspeaker has the first housing chamber present and the front of the bass loudspeaker has the second housing chamber present. The partition contains at least one bass reflex opening. A phase correction element is arranged at the front of the bass loudspeaker in the second housing chamber. The bass reflex opening opens into the second housing chamber and is arranged in a region adjacent to the phase correction element.
    Type: Application
    Filed: September 24, 2014
    Publication date: March 26, 2015
    Inventors: Matthias Christner, Nico Paul
  • Publication number: 20150055812
    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: Application
    Filed: August 19, 2014
    Publication date: February 26, 2015
    Inventor: Greg E. Blonder
  • Patent number: 8938084
    Abstract: A speaker device includes an enclosure provided with a speaker unit and a bass reflex port, wherein the bass reflex port has an outer opening opened to outside of the enclosure and an inner opening opened to inside of the enclosure, and has a tubular body whose hollow cross-sectional area is gradually reduced along an axial direction of the bass reflex port from its ends to its center, and the tubular body is formed so that a length of the hollow cross-section in one direction does not change along the axial direction, and wherein the inner opening of the bass reflex port is located opposite to the speaker unit, with the bass reflex port sandwiched therebetween.
    Type: Grant
    Filed: May 31, 2011
    Date of Patent: January 20, 2015
    Assignee: Yamaha Corporation
    Inventor: Akira Arai
  • Publication number: 20150003658
    Abstract: A cabinet to which a speaker unit is attached is configured to have an enclosed space where sound waves outputted from the rear surface of the speaker unit are transmitted, a sound guide space separated from the enclosed space, and an outlet for the sound waves transmitted in the sound guide space. A diaphragm is positioned between the enclosed space and the sound guide space of the cabinet, and an actuator is attached to the diaphragm. An audio signal shared with the speaker unit is supplied to the actuator, and diaphragm vibrations are enhanced by the actuator.
    Type: Application
    Filed: December 11, 2012
    Publication date: January 1, 2015
    Inventor: Yasushi Sato
  • Patent number: 8885863
    Abstract: An object of the present invention is to provide a loudspeaker device which has a high moisture resistance and can further widens an audio range of low-frequency range sounds. To achieve the above object, a closed box loudspeaker device of the present invention includes a loudspeaker unit which is attached to an opening in a box and activated carbon fiber which is provided in the box to adsorb gas. The activated carbon fiber has plural pores, which are exposed on a surface of the activated carbon fiber and have a diameter of 2.0 nm or less, and a volume of the pores having the diameter of 2.0 nm or less occupies 60% or more of a volume of the entire pores, so that the loudspeaker device which simultaneously achieves both an enhancement of the moisture resistance and the widening of the audio range of the low-frequency range sounds can be provided.
    Type: Grant
    Filed: May 17, 2010
    Date of Patent: November 11, 2014
    Assignee: Visionarist Co., Ltd.
    Inventors: Yuji Takashima, Hiroyuki Naono
  • Patent number: 8842868
    Abstract: An improved structure for a passive radiation sound box comprises: a body, which is formed an inner room and a sound-guide tunnel through several clapboards, the surface of the body is disposed an outlet connecting with the tunnel; a passive radiation component, each of the two ends of a vibration film has an edge, the component is disposed between the clipboards, the edges are connected with the clipboards; and an amplifier unit, which is surrounded in the room by the clapboards and the component, a vibration film of the unit is disposed on a side surface of the room, the component is beneath the unit; wherein while the unit is vibrating and sounding, partial sound pressure in the room is through the room by way of the component, and is then released by the outlet along the tunnel.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: September 23, 2014
    Assignee: Jazz Hipster Corporation
    Inventors: Yueh-Hua Hsu Huang, Lien-Huang Yang
  • Patent number: 8842866
    Abstract: A loudspeaker system has a front loudspeaker enclosure (30) having at least one first loudspeaker (20) and a rear loudspeaker enclosure (50) having at least one second loudspeaker (60). The rear loudspeaker enclosure (50) is in the form of a bandpass enclosure.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: September 23, 2014
    Assignee: D&B Audiotechnik GmbH
    Inventor: Matthias Christner
  • Patent number: 8837764
    Abstract: A portable loudspeaker includes a base and a speaker cap opposing the base. The base and speaker cap are interposed by a movable resonance portion. The movable resonance portion is formed in a storing state and a releasing state. The base has a resonance reflection portion to receive reverse resonance sound waves generated by a speaker. The movable resonance portion includes a first transmission channel to transmit the reverse resonance sound waves to the resonance reflection portion and a second transmission channel to transmit base sound waves generated by the resonance reflection portion from the reverse resonance sound waves towards the speaker cap. The speaker cap has a second audio outlet to output the bass sound waves.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 16, 2014
    Assignee: Topower Computer Industrial Co., Ltd.
    Inventor: Ching-Ling Chou
  • Patent number: 8831263
    Abstract: A ported electroacoustical device that uses the action of the port to provide cooling airflow across a heat producing device. The device includes a loudspeaker enclosure including a first acoustic port, an acoustic driver, mounted in the loudspeaker enclosure. The device also includes a heat producing device. The acoustic driver and the acoustic port are constructed and arranged to coact to provide a cooling, substantially unidirectional airflow across the heat producing device, thereby transferring heat from the heat producing device.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: September 9, 2014
    Assignee: Bose Corporation
    Inventors: Robert Preston Parker, Antonio M. Lage
  • Patent number: 8807268
    Abstract: A loudspeaker comprises a reflex port located within the enclosure at a point substantially co-incident with a nodal surface of at least one resonant mode within the enclosure. The amplitude of that resonance at the input to the duct is minimized, hence assisting in filtering out the effect of that resonance without needing absorptive material. Ideally, it is placed at the intersection of two or more nodal surfaces.
    Type: Grant
    Filed: April 17, 2013
    Date of Patent: August 19, 2014
    Assignee: GP Acoustics International Limited
    Inventor: Mark Alexander Dodd
  • Publication number: 20140219490
    Abstract: An acoustic layer is added to a laptop-type personal computing device, comprising: enclosing walls, optionally—one or more microphones, a signal processing device, at least one audio transducer, and an acoustic waveguide. The acoustic layer adjoins one or more internal areas of a laptop-type device. The signal processing device receives an internal signal from a laptop-type device. 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: Application
    Filed: March 31, 2014
    Publication date: August 7, 2014
    Applicant: Avnera Corporation
    Inventors: Patrick A. Quinn, Robert C. Proebstel, Manpreet S. Khaira, Thomas Irrgang, Nigel D. Waites, Ian J. Myles
  • Patent number: 8781145
    Abstract: In a low frequency transducer system a multi-compression chamber, an inverse horn structure is employed in combination with a resonance-distortion filter chamber. The filter chamber effectively expands the effective enclosure volume at low frequencies and connected to one of the compression chambers filter parasitic resonances and distortion and allowing the system to more efficiently reproduce low frequencies while being able to use smaller diameter transducers and maintaining good system sensitivity. Compression chambers are organized for constant or continuous compression on a section-by-section basis throughout the inverse horn system.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: July 15, 2014
    Inventor: Philip R. Clements
  • Patent number: 8767998
    Abstract: A pressure adjustor includes a sheet-like supporter formed of unwoven fabric or woven fabric, a plurality of activated carbon powder particles attached to the supporter, and binders binding the plurality of activated carbon powder particles to each other. If this pressure adjustor is disposed inside a cabinet of a speaker device including a speaker unit provided in the cabinet, a speaker device is obtained which has an excellent bass reproduction effect even if the device is made small.
    Type: Grant
    Filed: February 19, 2010
    Date of Patent: July 1, 2014
    Assignee: Panasonic Corporation
    Inventors: Keisuke Imamura, Yukihiro Shimasaki, Kiyoshi Ohashi, Yoshimichi Kajihara, Yohei Jin
  • Patent number: 8750549
    Abstract: A system providing a resonator for a transducer of an electronic device is provided. The system comprises a housing defining: a first enclosure having a first opening to house a back end of the transducer and a second opening; a port connected to the first enclosure through the second opening of the first enclosure, the port having a first end, a second end, an interior channel and a second opening in the second end; a second enclosure to cover a front portion of the speaker; and at least one aperture defined in the second enclosure to allow air outside of the electronic device to be in communication with the front of the transducer. When the transducer is mounted into the first enclosure, a first volume between the transducer and the first enclosure is formed which is in communication with air surrounding the second end of the port.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: June 10, 2014
    Assignee: Blackberry Limited
    Inventor: Christian Lorenz
  • Patent number: 8744108
    Abstract: A duct design and methods for designing ducts are described herein. The duct has a profile described by an equation that balances momentum of the fluid flowing through the duct with an adverse pressure gradient. The duct profile is configured to: (i) maintain the fluid's momentum to be greater than the adverse pressure gradient present at any location within the duct, such that no boundary layer separation occurs; and (ii) achieve a fluid exit momentum of approximately zero.
    Type: Grant
    Filed: July 12, 2012
    Date of Patent: June 3, 2014
    Assignee: Strata Audio LLC
    Inventor: Mark Trainer
  • Patent number: 8731223
    Abstract: Disclosed is a microspeaker with an inner resonance chamber, more particularly a microspeaker with an inner resonance chamber which improves quality of sound and enables slim and compact design of the microspeaker by blocking rearward sound generated at the rear side of the vibration plate to prevent interference of a rearward sound with a forward sound generated at the front side of a vibration plate and installing a chamber with a specific volume within the microspeaker to allow the rearward sound to cause resonance.
    Type: Grant
    Filed: December 13, 2012
    Date of Patent: May 20, 2014
    Assignee: Bujeon Co., Ltd.
    Inventors: Dong Hyun Seo, Seung Cheol Lee
  • Patent number: 8731224
    Abstract: In a bass reflex type speaker, a Helmholtz resonator is formed by a bass reflex port and a space within a speaker enclosure excluding the bass reflex port and a speaker unit. The bass reflex port of the bass reflex type speaker is movable toward and away from a side surface while maintaining its projecting direction within the speaker enclosure. In response to such movement of the bass reflex port, relative positional relationship between a neck and cavity of the bass reflex type speaker varies.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 20, 2014
    Assignee: Yamaha Corporation
    Inventors: Yasuo Shiozawa, Hirofumi Onitsuka
  • Publication number: 20140126757
    Abstract: A hand-held electronic device includes an earpiece, a first speaker having a first primary audio output ported to the earpiece, a second speaker having a second primary audio output and a second bass reflex output, with the second bass reflex audio output also being ported to the earpiece. The device includes a use case manager configured to determine a mode of operation of the device, and a controller configured to drive the first and second speakers in either a broadcast mode or a private mode in response to a signal from the use case manager. The polarity of the signal driving the second speaker is inverted for frequencies below the bass reflex port resonance frequency, to thereby provide a higher total combined energy in the vicinity of port resonance.
    Type: Application
    Filed: November 8, 2012
    Publication date: May 8, 2014
    Applicant: MOTOROLA MOBILITY LLC
    Inventor: Giles T. Davis
  • Patent number: 8708092
    Abstract: A speaker device includes a cabinet from which a duct for adjusting the back pressure protrudes, a speaker unit mounted in the cabinet, and an intermediate hollow member including first and second connection portions. A cabin space in which the cabinet is installed is separated from a non-cabin space by a partition wall. If there is a subframe facing the partition wall, the duct cannot be directly connected to the opening formed in the partition wall. The intermediate hollow member is disposed in a small space between the subframe and the partition wall, the second connection portion is connected to the opening, and the duct is connected to the first connection portion.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: April 29, 2014
    Assignee: Alpine Electronics, Inc.
    Inventors: Ryo Ito, Akio Suzuki, Arata Tada
  • Patent number: 8699738
    Abstract: A speaker system includes: a speaker cabinet; a speaker unit installed in a wall surface of said speaker cabinet; and an acoustic tube having ends, one of which is open and the other of which is closed, in which said acoustic tube is provided in said speaker cabinet such that a side wall surface of said acoustic tube crosses a direction in which standing waves propagates, the waves occurring inside said speaker cabinet.
    Type: Grant
    Filed: November 2, 2011
    Date of Patent: April 15, 2014
    Assignee: Panasonic Corporation
    Inventor: Shuji Saiki
  • Patent number: 8649506
    Abstract: Systems and methods are provided for media devices including a housing, a frame disposed adjacent to the housing, and an acoustic source that is integrated with the frame for emitting sound from the media device.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: February 11, 2014
    Assignee: Apple Inc.
    Inventors: Richard Hung Minh Dinh, Tang Yew Tan, Derek Boyd Barrentine
  • Patent number: 8605929
    Abstract: A film-type audio output apparatus includes an audio output device, at least one speaker unit, and at least one film. The at least one speaker unit is positioned at any side of the audio output device. The speaker unit can be an embedded speaker unit. The at least one film can be positioned at any or more places of an inner side and an outer side of the audio output device. When the speaker unit of the audio output device releases sound, the film positioned on the audio output device can get vibration of the sound so that the inside of the audio output device can generate resonance. Thus, the audio output apparatus can generate softer undertone and wider diapason.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: December 10, 2013
    Assignee: Global Target Enterprise Inc.
    Inventor: Liang-Tan Tsai
  • Patent number: 8594358
    Abstract: An audio device has passive radiators that are driven by acoustic drivers. The passive radiators are arranged so that the net mechanical vibration is minimized.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: November 26, 2013
    Assignee: Bose Corporation
    Inventors: Roman N. Litovsky, Hal Greenberger
  • Patent number: 8588449
    Abstract: An audio driver including a diaphragm with a first side and a second side. The diaphragm is coupled to a transducer element on the second side and is arranged to radiate sound. The transducer element converts an electrical input signal into movement of the diaphragm. The diaphragm is arranged such that a part of the diaphragm at least partly forms a cavity at the second side of an air conduit is coupled to the cavity. The air conduit has a first opening into the cavity and a second opening outside of the cavity. The air conduit and cavity form a resonator which has a resonance frequency that is less than half a free air acoustic resonance frequency of the audio driver.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: November 19, 2013
    Assignee: Koninklijke Philips N.V.
    Inventors: Okke Ouweltjes, Joris Adelbert Maria Nieuwendijk, Gerben Kooijman, Ronaldus Maria Aarts
  • Patent number: 8577076
    Abstract: A speaker device includes: an acoustic diaphragm having a given shape and made of a material having physical anisotropy; and an excitation means attached to the acoustic diaphragm for exciting vibration components in consideration of a direction corresponding to the physical anisotropy.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: November 5, 2013
    Assignee: Sony Corporation
    Inventors: Yoshio Ohashi, Nobukazu Suzuki
  • Patent number: 8565463
    Abstract: A loudspeaker system according to the present invention includes a cabinet, a loudspeaker unit attached to an opening formed in the cabinet, a gas adsorber provided in the cabinet and operable to physically adsorb gas in the cabinet to equivalently increase a volume of an inside of the cabinet, and a dehumidifier attached to an opening formed in the cabinet and operable to discharge damp air in the cabinet to the outside when a DC voltage is applied thereto.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: October 22, 2013
    Assignee: Panasonic Corporation
    Inventors: Shuji Saiki, Toshiyuki Matsumura
  • Patent number: 8538059
    Abstract: An ear speaker device includes an electroacoustic transducer including a housing mounted at a predetermined position of listener's head, a speaker unit mounted on one surface in the housing, and positioned away from an entrance of the listener's external acoustic meatus for a predetermined distance when the housing is mounted on the listener's head, and a tubular duct extended so as to allow a sound generated by the housing in the inner space thereof to reach the vicinity of the entrance of the listener's external acoustic meatus, and a hole for emitting sound of the duct is oriented to the opposite direction with respect to the entrance of the external acoustic meatus; and a mounting part used for mounting the electroacoustic transducer on the listener's head in a manner that the predetermined distance is provided between the speaker unit and the entrance of the listener's external acoustic meatus.
    Type: Grant
    Filed: March 19, 2012
    Date of Patent: September 17, 2013
    Assignee: Sony Corporation
    Inventors: Makoto Yamagishi, Hideki Seki, Noriyuki Hiyama, Yukimasa Yamaguchi, Takeshi Hara
  • Patent number: 8528690
    Abstract: A sound effect amplification diffuser includes a deck including a cover member defining a top bearing space, a sound collection hole at one lateral side of the bearing space, a sound collecting hood at the bottom side thereof around the sound collection hole and a sound grille at one side wall thereof opposite to the sound collection hole, a base member affixed to the bottom side of the cover member and an accommodation chamber defined between the base member and the cover member, and an amplification diffuser suspending in the accommodation chamber and connected between the sound collecting hood and the sound grille and adapted to enhance the intensity of the output sound of a mobile electronic device being positioned in the bearing space.
    Type: Grant
    Filed: January 28, 2013
    Date of Patent: September 10, 2013
    Assignee: Chen-Source Inc.
    Inventor: Chen-Yun Wu
  • Patent number: 8430200
    Abstract: A speaker apparatus according to the present invention includes a phase inversion-type enclosure in which a speaker unit and a bass reflex port are installed, the bass reflex port having a tubular body whose hollow cross-sectional area gradually becomes smaller from one opening side toward an inside of the bass reflex port in an axial direction of the bass reflex port, and a length in one direction of the hollow cross section of the tubular body not changing and constant along the axial direction.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: April 30, 2013
    Assignee: Yamaha Corporation
    Inventor: Akira Arai
  • Publication number: 20130083937
    Abstract: A speaker device includes an enclosure provided with a speaker unit and a bass reflex port, wherein the bass reflex port has an outer opening opened to outside of the enclosure and an inner opening opened to inside of the enclosure, and has a tubular body whose hollow cross-sectional area is gradually reduced along an axial direction of the bass reflex port from its ends to its center, and the tubular body is formed so that a length of the hollow cross-section in one direction does not change along the axial direction, and wherein the inner opening of the bass reflex port is located opposite to the speaker unit, with the bass reflex port sandwiched therebetween.
    Type: Application
    Filed: May 31, 2011
    Publication date: April 4, 2013
    Applicant: YAMAHA CORPORATION
    Inventor: Akira Arai
  • Patent number: 8391528
    Abstract: Provided herein is a loudspeaker system utilizing one or more ducted slot ports. In various embodiments, a ducted slot port may incorporate an acoustic low pass filter, such as a bend in the airflow path, to control midrange leakage. A ducted slot port may also minimize standing waves within the port duct and control turbulent port noise, such as by varying its cross-sectional area substantially continuously and symmetrically along the port duct's entrance-exit axis.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: March 5, 2013
    Assignee: Freedman Electronics Pty Ltd
    Inventors: Marcelo Vercelli, Petr Stolz
  • Patent number: 8391510
    Abstract: A sound reproduction system includes a loudspeaker enclosure that has a first loudspeaker and a second loudspeaker which are mounted on a surface of the enclosure. The first and second loudspeakers are respectively accommodated in a first space and a second space of the enclosure, the spaces being separated by a partition and being in communication with a first port and a second port, respectively. The first and second ports are located on opposite sides of the unit formed by the first and second loudspeakers.
    Type: Grant
    Filed: July 21, 2008
    Date of Patent: March 5, 2013
    Assignee: Nexo
    Inventor: Eric Vincenot
  • Patent number: 8385575
    Abstract: A reflex enclosure, includes an enclosure body, a loudspeaker, a waveguide portion and a vibration unit; a rearward sound wave generated from the loudspeaker is guided 360 degree (in all directions) from the outside of the waveguide portion to the inside of the waveguide portion, and then push the vibration unit to generate vibration to generate a corresponding sound wave, thereby reducing a standing wave ratio of the rearward sound wave in a sound room to obtain a better timbre. Furthermore, the length of a rearward sound wave guiding distance can be extended, allowing the sound wave to have the effect of extending toward a low frequency compass. In addition, the rearward sound wave is allowed to compress to increase a vibration unit pushing force, thereby obtaining a better sound effect.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: February 26, 2013
    Inventor: Tsung-Cheng Kuo
  • Patent number: RE44942
    Abstract: A mobile communication device is provided. The mobile communication device includes a terminal body, and a speaker module located in the terminal body. The speaker module includes an enclosure located in the terminal body, the enclosure defining a chamber therein, and a speaker having a front surface and a rear surface, the speaker being located in the enclosure such that the front surface of the speaker is exposed from the enclosure and the rear surface thereof is positioned within the chamber, to allow a sound generated from the rear surface to resonate within the chamber. A mutual interference between the sound generated from the front side of the sound emission part and the sound emitted from the rear side thereof can be reduced to thereby improve the performance of the middle and low sound.
    Type: Grant
    Filed: February 14, 2013
    Date of Patent: June 10, 2014
    Assignee: LG Electronics Inc.
    Inventors: Sung-Tae Lee, Jin-Ho Kim, Jeong-Hoon Kang