Having Acoustic Wave Modifying Structure Patents (Class 381/337)
  • Patent number: 10674250
    Abstract: The present disclosure discloses a speaker box which includes an upper cover, a lower cover fixed to the upper cover in a covering manner and forming an accommodating space with the lower cover, and a sound unit accommodated in the accommodating space. The sound unit and the upper cover define a front cavity. The sound unit, the lower cover and the upper cover define a rear cavity together. The speaker box further includes a cover plate fixed to one side of the upper cover away from the lower cover, and an air-permeable isolating member. The cover plate and the upper cover are separated and define an auxiliary cavity which is filed with sound-absorbing particles. The air-permeable isolating member is fixed to the upper cover and completely covers the through hole, and the air-permeable isolating member encloses the sound-absorbing particles in the auxiliary cavity.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: June 2, 2020
    Assignee: AAC Acoustic Technologies (Shenzhen) Co., Ltd.
    Inventors: Yanlong Wang, Fuhu Zhang
  • Patent number: 10602247
    Abstract: A loudspeaker, comprising an enclosure; at least one dynamic driver mounted in the enclosure; and a porous sound adsorber material disposed within the enclosure, the sound adsorber material at least comprising a Metallic Organic Framework material.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: March 24, 2020
    Assignee: SSI New Material (Zhenjiang) Co., Ltd.
    Inventors: Christian Lembacher, Christoph Schmauder
  • Patent number: 10559294
    Abstract: The present technique relates to an acoustic tube and an acoustic reproduction apparatus that can generate an evanescent wave at a lower cost. An acoustic tube includes an acoustic path longer than an external dimension of the acoustic tube and includes a plurality of opening portions or a slit-like opening portion. When a sound wave advances in the acoustic tube, sound waves are output from the plurality of opening portions or from a plurality of positions of the slit-like opening portion, and the sound waves are combined to form an evanescent wave. The present technique can be applied to an acoustic tube, an acoustic reproduction apparatus including the acoustic tube, and the like.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: February 11, 2020
    Assignee: Sony Corporation
    Inventors: Tetsu Magariyachi, Yuhki Mitsufuji, Yu Maeno
  • Patent number: 10555090
    Abstract: A MEMS microphone system with encapsulated movable electrode is provided. The MEMS microphone system comprises a MEMS sensor having an access channel, a plug, and first and second members. The access channel configured to receive the plug is formed on at least one of the first and second member. A vacuum having a pressure different from a pressure outside the MEMS sensor is formed between the first and second members.
    Type: Grant
    Filed: June 5, 2018
    Date of Patent: February 4, 2020
    Assignees: Akustica, Inc., Robert Bosch GmbH
    Inventors: Jochen Reinmuth, Vijaye Rajaraman, Daniel Meisel, Bernhard Gehl
  • Patent number: 10178468
    Abstract: An acoustic system is provided that includes a transducer having a housing, which encloses a volume and in which at least a surface or a sub-surface is formed by a sheet-like structure configured to vibrate. Powder made of adsorbent material having an adsorption effective surface may be present in the volume. The powder may be selected such that, through a movement of the powder caused by vibrations of the sheet-like structure configured to vibrate, the adsorption effective surface is enlarged. The adsorbent material may be selected such that an adsorption of air or gas present in the volume is caused by an increase of the pressure caused from vibrations of the sheet-like structure configured to vibrate. The powder is freely movable within the housing.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: January 8, 2019
    Assignee: FRAUNHOFER-GESELLSCHAFT ZUR FÖRDERUNG DER ANGEWANDTEN FORSCHUNG E.V.
    Inventors: Karlheinz Bay, Michael Leistner, Philip Leistner, Waldemar Maysenhölder
  • Patent number: 9918161
    Abstract: A speaker box is disclosed. The speaker box includes a housing; a speaker unit accommodated in the housing and including a diaphragm for generating sound; a front sound cavity cooperatively formed by the diaphragm and the housing; a sound channel communicating the front sound cavity with outside space of the speaker box; and a sound-absorbing device disposed in the sound channel. The sound-adsorbing device includes an accommodation housing, sound-absorbing powder filled in the accommodation housing and a separation net sealing the accommodation housing. The speaker box achieves designed acoustic parameters with good acoustic performance.
    Type: Grant
    Filed: January 26, 2017
    Date of Patent: March 13, 2018
    Assignee: AAC TECHNOLOGIES PTE. LTD.
    Inventors: Zhizhu Chen, Miao Miao, Fuhu Zhang, Chengliang Wang, Cheng Qian
  • Patent number: 9407977
    Abstract: A loudspeaker device is presented which includes a zeolite material comprising zeolite particles having a silicon to aluminum mass ratio of at least 200. For an increased pore fraction of pores with a diameter in a range between 0.7 micrometer and 30 micrometer shows an increased shift of the resonance frequency down to lower frequencies has been observed.
    Type: Grant
    Filed: June 3, 2015
    Date of Patent: August 2, 2016
    Assignees: Nanoscape AG, Knowles IPC (M) SDN BHD
    Inventors: Maria Papakyriacou, Johannes Kobler, Jürgen Sauer
  • Patent number: 9319776
    Abstract: According to an exemplary embodiment of the present invention, an acoustic manipulator element is provided. The acoustic manipulator element is arrangable relatively to an acoustic source in a manner that the acoustic manipulator element splits frequency selectively sound waves originating from the acoustic source in a reflected and a through component, wherein at least a portion of the acoustic waves of the through component is attenuated by at most 15 dB for acoustic frequencies having a wavelength between 200 Hz and 16000 Hz compared to the sound waves of the acoustic source.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: April 19, 2016
    Inventor: Hubert Hochleitner
  • Patent number: 9020178
    Abstract: The present invention provides a novel drive unit mounting arrangement, in which a drive unit having a chassis is mounted to a cabinet from at least two sides. The arrangement comprises a member for securing the drive unit to the cabinet from mounting points of the chassis. The arrangement further comprises a suspension member between the mounting points of the chassis and the cabinet such as to suspend the drive unit chassis elastically to the cabinet for allowing suspension in both forward and rearward directions.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: April 28, 2015
    Assignee: Genelec Oy
    Inventors: Ilpo Martikainen, Markku Kulomäki, Aki Mäkivirta, Jussi Väisänen, Noa Eskelinen, Jari Mäkinen, Pekka Nissinen
  • Publication number: 20150110326
    Abstract: An anti-diffraction plate for including in a planar magnetic transducer. The anti-diffraction plate includes anti-diffraction structures for positioning adjacent to magnets of the planar magnetic transducer. By introducing a shape over top surface of the magnets, the anti-diffraction structures cause the elimination of diffraction patterns as a main audio wavefront passes by the magnets from a diaphragm. A diffusion structure for diffusing reflected sound waves, the diffusion structures reducing or eliminating the power and capacity of the reflected sound waves to create interference patterns with oncoming sound waves.
    Type: Application
    Filed: October 17, 2014
    Publication date: April 23, 2015
    Inventor: Dragoslav Colich
  • Publication number: 20150110293
    Abstract: Apparatus and methods are disclosed for acoustic optimization. An example playback device includes a first transducer to at least one of output sound waves and receive sound waves, a second transducer to at least one of output sound waves and receive sound waves, and an acoustic grille positioned in relation to the first transducer, where the acoustic grille is to reflect sound waves received at a first angle of incidence.
    Type: Application
    Filed: December 29, 2014
    Publication date: April 23, 2015
    Inventor: Daniel C. Wiggins
  • 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
  • Publication number: 20150092973
    Abstract: A system and method for enhancing the real and/or perceived bass band of an audio signal is disclosed. A computationally simple yet effective bass band enhancement system for use in consumer electronics applications is disclosed. An audio processing system including bass enhancement functionality for use in a mobile audio system is disclosed.
    Type: Application
    Filed: November 22, 2012
    Publication date: April 2, 2015
    Applicant: ACTIWAVE AB
    Inventor: Pär Gunnars Risberg
  • Patent number: 8995700
    Abstract: An acoustic transducer may comprise a sound source, a throat connected to the sound source, and a horn connected to the throat. The horn may be arranged on a wall, wherein the throat is designed such that a path of the sound from the sound source to an interface between the throat and the horn is shorter in a region close to the wall than at a region that is remote from the wall.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: March 31, 2015
    Assignee: d&b audiotechnik GmbH
    Inventor: Frank Bothe
  • Publication number: 20150071473
    Abstract: A loudspeaker 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: September 10, 2013
    Publication date: March 12, 2015
    Applicant: Bose Corporation
    Inventor: Geoffrey C. Chick
  • Patent number: 8971974
    Abstract: A cover for a hand-held device, which has a device body and a speaker, includes a cover body configured for covering a portion the device body and for covering the speaker and a channel for positioning adjacent the device body. The channel is configured to form a sound duct when mounted adjacent the back side of the device body and to be in communication with the speaker when the cover is mounted to the hand-held device for redirecting at least a portion of the sound waves emitted from the speaker to a location remote from the speaker.
    Type: Grant
    Filed: April 28, 2011
    Date of Patent: March 3, 2015
    Assignee: nflukz, llc
    Inventor: Robert B. Weaver, III
  • Publication number: 20150055811
    Abstract: Techniques described herein generally relate to generating an audio signal with a speaker. In some examples, a speaker device is described that includes a membrane and a shutter. The membrane can be configured to oscillate along a first directional path and at a first frequency effective to generate an ultrasonic acoustic signal. The shutter can be positioned about the membrane and configured to modulate the ultrasonic acoustic signal such that an audio signal can be generated.
    Type: Application
    Filed: September 10, 2014
    Publication date: February 26, 2015
    Inventor: Mordehai MARGALIT
  • Patent number: 8965033
    Abstract: Apparatus and methods are disclosed for acoustic optimization. An example playback device includes a first transducer to at least one of output sound waves and receive sound waves, a second transducer to at least one of output sound waves and receive sound waves, and an acoustic grille positioned in relation to the first transducer, where the acoustic grille is to reflect sound waves received at a first angle of incidence.
    Type: Grant
    Filed: August 31, 2012
    Date of Patent: February 24, 2015
    Assignee: Sonos, Inc.
    Inventor: Daniel C. Wiggins
  • Patent number: 8958591
    Abstract: The disclosure relates to several embodiments of a concealed speaker system, The concealed speaker system further has a speaker assembly mounted to the base frame and an active member which may be formed of PVC, expanded PVC, hardened fibrous materials, foam core, or equivalents that has an outer surface which in some embodiments is substantially coplanar with the surrounding wall section, and in other embodiments extends slightly outward therefrom. The base frame, speaker assembly, and the active member cooperate to form an acoustic chamber that is positioned behind the inner surface of the active member. Acoustic energy is transferred from the speaker assembly to the active member where the sound is produced therefrom to the room.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: February 17, 2015
    Inventor: Paul N. Hagman
  • Patent number: 8953831
    Abstract: An acoustic horn. In one implementation, the horn includes at least four wall sections, defining a passageway. The cross-sectional area of the mouth is at least ten times the cross sectional area of the throat. The wall sections are dimensioned so that at least one wall section has a dimension at the throat at least ten times a dimension at the throat of a second wall section. In another implementation the cross-section at the mouth is elongated and is be bounded by a continuous curve defining a geometric figure having a major axis at least ten times a minor axis.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: February 10, 2015
    Assignee: Bose Corporation
    Inventors: Joseph Jankovsky, Sarah M. Heile, John H. Wendell
  • Patent number: 8942402
    Abstract: An acoustic speaker device (10) according to the present invention comprises at least two types of gas adsorption materials in a cabinet (12) thereof. A porous carbon material package member (14A), which is one of the gas adsorption materials, can adsorb or eliminate air in the cabinet (12) by a porous carbon material (41) during the operation of a speaker unit (13) so as to buffer compression or expansion of air in the cabinet (12). A sheet-like moisture adsorbing material (14B), which is the other of the gas adsorbing materials, is formed by dispersing copper ion-exchanged ZSM-5 zeolite (43) in a thermoplastic resin composition (44), and is stuck on at least a section of an inner wall of the cabinet (12). This configuration allows moisture in the cabinet (12) to be rapidly adsorbed.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: January 27, 2015
    Assignee: Panasonic Corporation
    Inventor: Akiko Yuasa
  • Patent number: 8929580
    Abstract: Provided are a sound generation system and a sound recording system, which are placed in a room to adjust sound. A columnar body is disposed around a sound source to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. Moreover, a columnar body is disposed around a recording device to adjust how much sound of a low-tone range, as well as of a middle- and high-tone range, is absorbed and diffused. The columnar bodies may be made of a combination of different diameters and/or lengths. The arrangement distances may be random. With the columnar body disposed at the most appropriate location, it is possible to adjust sound in a wide band.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: January 6, 2015
    Assignee: Nittobo Acoustic Engineering Co., Ltd.
    Inventors: Shinji Ohashi, Koichi Yamashita, Yasushi Satake, Katsuyuki Kanazawa
  • Patent number: 8922586
    Abstract: Systems and methods (1000) for reducing a form factor of an Electronic Device (“ED”). The methods involve disposing a first user interface component (702) in a housing (710) of ED (700) such that its center axis (718) is at an angle (720) relative to a plane (722) that is perpendicular to a horizontal center axis (712) of ED. A second user interface component (704) is disposed in the housing such that its center axis (724) is parallel to the horizontal center axis of ED, and such that a top portion (734) thereof is overlapped by a bottom portion (732) of the first user interface component. A third user interface component (706) is disposed in the housing such that its center axis (726) is parallel to the horizontal center axis of ED, and such that a top portion (730) thereof overlaps a bottom portion (728) of the second user interface component.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: December 30, 2014
    Assignee: Harris Corporation
    Inventors: Jose R. Duran, David Cipolla, Jason Scott, Richard S. Currier
  • Patent number: 8917875
    Abstract: A circuit for operating loudspeakers includes a first, second, third and fourth loudspeaker circuit, having one input each for injecting a signal and one output each for connecting a loudspeaker input. The loudspeaker circuits are designed to amplify the injected signal and to provide the amplified signal at the outputs thereof. The loudspeaker circuits can, for example, be used for a 2.1 sound system. The three channels for a 2.1 sound system can be implemented by an amplifier circuit with four loudspeaker circuits, one loudspeaker circuit each being required for the two stereo channels left and right. A subwoofer channel can be driven differentially by two loudspeaker circuits. The stereo channels are, by contrast, only still connected to one loudspeaker circuit each, and so the stereo channels require at least one further common ground cable.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: December 23, 2014
    Assignee: Infineon Technologies AG
    Inventors: Christoph Braun, Thomas Duda, Torsten Hinz
  • Patent number: 8917896
    Abstract: A loudspeaker includes a horn including a first end panel, a second end panel, a first side panel, and a second side panel. Edges of at least the first and second side panels define a diffraction slot opening. The first and second side panels are each fabricated from a sheet of flexible material held in a stressed, curved shape by at least a rigid support member. The panels are designed by an automated process based on a number of electro-acoustic transducers to be used in a loudspeaker, horizontal and vertical coverage angles for the loudspeaker, and a wall length for a horn of the loudspeaker.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: December 23, 2014
    Assignee: Bose Corporation
    Inventors: Christopher B. Ickler, Clifford A. Henricksen, Akira Mochimaru, Kenneth D. Jacob, Soichiro Hayashi
  • Patent number: 8887862
    Abstract: An acoustical phase plug for use in loudspeakers produces a planar rectangular wavefront, or a wavefront with a desired amount of curvature, from the output aperture of the phase plug device when presented with a planar circular wavefront at the input aperture. The phase plug utilizes a waveguide that equalizes the travel paths from the input aperture to the output aperture. The waveguide essentially eliminates surface discontinuities thereby resulting in the reduction of diffraction of the wavefront travelling through the phase plug device.
    Type: Grant
    Filed: February 24, 2014
    Date of Patent: November 18, 2014
    Assignee: Bag End, Inc.
    Inventor: Charles Emory Hughes, II
  • Patent number: 8885865
    Abstract: A technology which improves frequency characteristics by an acoustic method so that, when a sound-isolating earphone is attached to a human ear, the sound is heard with natural frequency characteristics is provided. In a sound path from a diaphragm of an electro-acoustic transducer inside a sound-isolating earphone to the eardrum passing through a cylindrical sound leading pipe via the external auditory canal, two independent paths for sound waves are provided in the sound leading pipe, and transfer of the sound with a specific frequency is suppressed by adjusting a difference in length of the paths, whereby the frequency characteristics of the sound passing through this sound path are improved.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: November 11, 2014
    Inventor: Makoto Yamagishi
  • Patent number: 8858892
    Abstract: A liquid treatment system has a housing defining an interior space. The housing has an inlet port for receiving liquid into the interior space of the housing and an outlet port for allowing liquid to exit the interior space of the housing. The outlet port is spaced from the inlet port so that liquid flows through the interior space of the housing from the inlet port to the outlet port. An ultrasonic waveguide assembly is disposed within the interior space of the housing and includes an ultrasonic horn disposed at least in part intermediate the inlet port and the outlet port of the housing. The ultrasonic horn is operable at an ultrasonic frequency to ultrasonically energize liquid flowing within the housing. An ultraviolet light source emits ultraviolet light into the interior space of the housing to treat liquid flowing therein.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: October 14, 2014
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: Robert Allen Janssen, John G. Ahles, Robert A. Cool, Thomas David Ehlert, John Gavin MacDonald, Earl C. McCraw, Jr., Patrick Sean McNichols, Paul W. Rasmussen, Steve J. Roffers
  • Publication number: 20140294218
    Abstract: An acoustic transducer comprising: a mechanical acoustic filter configured to be electrically controllable to change the acoustic properties of the transducer.
    Type: Application
    Filed: February 25, 2011
    Publication date: October 2, 2014
    Applicant: Nokia Corporation
    Inventors: Mikko Veli Aimo Suvanto, Jorg Rehder
  • Patent number: 8848934
    Abstract: Method, user terminal and computer program product for controlling audio signals at the user device during a communication session between the user device and a remote node, in which a primary audio signal is received at audio input means of the user device for transmission to the remote node in the communication session. It is determined whether the user device is operating in (i) a first mode in which secondary audio signals output from the user device are likely to disturb the primary audio signal received at the audio input means, or (ii) a second mode in which secondary audio signals output from the user device are not likely to disturb the primary audio signal received at the audio input means.
    Type: Grant
    Filed: December 8, 2010
    Date of Patent: September 30, 2014
    Assignee: Skype
    Inventor: Nils Ohlmeier
  • Patent number: 8842865
    Abstract: The invention concerns a loudspeaker system having a plurality of segmented line array speakers and a plurality of acoustic waveshapers. In addition there is provided an overlap region between two adjacent waveshapers.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: September 23, 2014
    Assignees: K+H Vertriebs-und Entwicklungsgesellschaft mbH, Sennheiser Electronic GmbH & Co. KG
    Inventor: Jörg Knieschewski
  • Patent number: 8842867
    Abstract: A loudspeaker box (300) has a loudspeaker housing (1) and a sound source (3a) with a non-rotationally symmetrical radiation characteristic. The sound path of the sound source (3a) contains an acoustic element (4) which dilates or constricts the radiation of sound in at least one radiation plane. The loudspeaker box (300) comprises a mechanism which can be used to position the sound source (3a) and the acoustic element (4) in different rotational positions relative to one another.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 23, 2014
    Assignee: D & B Audiotechnik AG
    Inventor: Frank Bothe
  • Publication number: 20140270307
    Abstract: A ultra-slim includes bass, alto membranes and acoustical element, where a surrounding embossed pattern is configured on a location adjacent to the rim of the bass membrane to form a dangling edge, and a frame stopping portion formed by a step is disposed on the center thereof. Whereby, a groove formed by a step is disposed on the center of alto membrane, and the acoustical element is formed by stacking a plurality of ceramic material layers together, thereby mounting the acoustical element on the alto membrane, and then lodging the alto membrane in the inner edge of the frame stopping element of the bass membrane to construct a thinned speaker in which sound is guided out through the bass and alto membranes after audio signals are received, capable of the application thereof to thinned products such as iPad, iPhone, cellular phones or notebook computers.
    Type: Application
    Filed: March 14, 2013
    Publication date: September 18, 2014
    Applicants: HSIANG-CHIH YU, ABATECH ELECTRONICS CO., LTD.
    Inventor: HSIANG-CHIH YU
  • Patent number: 8837762
    Abstract: In a speaker, a space surrounded by a frame on one side of a diaphragm is separated by a damper into a first internal space and a second internal space. The first internal space and the second internal space are caused to face one part and another part of an opening provided in the frame. A duct protrudes from the frame, and the opening is an open end of the duct on the base end side thereof. The speaker is installed, for example, outside a vehicle cabin with the duct inserted into an opening in a vehicle cabin wall, and the first and second internal spaces are caused to communicate with a space in the vehicle cabin through the duct. Therefore, reproduced sound in the bass range having a high sound pressure can be discharged through the duct to the space in the vehicle cabin.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: September 16, 2014
    Assignee: Alpine Electronics, Inc.
    Inventor: Arata Tada
  • Patent number: 8837767
    Abstract: The present invention comprises a loudspeaker system that includes a loudspeaker and a detachable mount. In one or more embodiments, the loudspeaker and mount include electrical connectors that are engaged when the loudspeaker is attached to the mount. In one or more embodiments, the loudspeaker and mount comprise mating mounting structures that support the loudspeaker on the mount when the mounting structure of the loudspeaker is engaged with the mounting structure of the mount. In one or more embodiments, multiple configurations of the mount are provided that allow the loudspeaker to be mounted with a variety of orientations with respect to the mounting surface. In one or more embodiments, the loudspeaker comprises a tweeter with a rotatable wave guide that allows the dispersion angle of the tweeter to be adjusted to accommodate the variety of orientations at which the loudspeaker may be mounted.
    Type: Grant
    Filed: February 1, 2013
    Date of Patent: September 16, 2014
    Assignee: RGB Systems, Inc.
    Inventors: William C Stewart, Jeff Hatley, Michael Hudson, Larry Frerichs, Clinton Strong, Wesley Trenholme-Pihl
  • Patent number: 8831262
    Abstract: A directional waveguide array apparatus can transmit and/or receive airborne or fluid-borne audio with the appropriate selection of transducers. The present invention advances directional waveguide arrays by allowing construction of a directional audio device with desired frequency bandwidths, array patterns, and gain by appropriate geometric configurations of the array of waveguide channel ports, as well as dimensioning and configuration of waveguide channel and chamber parameters. Embodiments of the present invention enable increased immunity to environmental noises, temperature, and humidity; low cost of construction; high reliability; simplicity of operation; very low power consumption; real-time steering of directivity (interference) pattern; wide range of audio powers that can be transmitted or received; and interchangeable transducer types.
    Type: Grant
    Filed: October 17, 2012
    Date of Patent: September 9, 2014
    Assignee: Wave Sciences LLC
    Inventor: James Keith McElveen
  • Patent number: 8824717
    Abstract: A horn assembly for high frequency acoustic speakers. In an array of speakers, a spacing between adjacent speakers needs to be less than the wavelength of sound being emitted in order to combine effectively. For high frequency sound, a relatively small wavelength imposes a limitation on such a spacing. Such limitations are sometimes physically difficult to implement. A horn assembly increases the exit dimensions of the small speaker to larger desired dimensions by utilizing one or more plugs that divide a larger horn cavity into smaller horn cavities and creating similar pathlengths thereto. The similar pathlengths and the smaller horn cavities having desired dimensions allow the exiting sound to combine effectively. The overall dimensions of the exit portion of the horn assembly can be selected to match the dimensions of larger bass speakers, thus allowing improved arraying of the high frequency speakers with respect to other larger speakers.
    Type: Grant
    Filed: May 10, 2011
    Date of Patent: September 2, 2014
    Assignee: QSC Holdings, Inc.
    Inventor: Michael Adams
  • Patent number: 8824718
    Abstract: A loudspeaker apparatus has at least one sound generator wherein an at least partially sound-conducting channel is arranged in a sound radiation direction of the sound generator and is suitable for directing sound emerging from the sound generator along the course of the sound-conducting channel such that the sound emerges from the loudspeaker apparatus at a second end of the sound-conducting channel, which end is in the form of a sound outlet opening, at a radiation angle which defined by the sound outlet opening.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: September 2, 2014
    Inventor: Frank Held
  • Patent number: 8803560
    Abstract: An electrical to audible signal measurement apparatus comprises an absolute value converter, a voltage to frequency converter, a polarity detector, and a waveform changer. The absolute value converter is capable of converting a bipolar input signal into a unipolar signal. The voltage to frequency converter is connected to the absolute value converter and is capable of generating a frequency signal proportional to the unipolar signal. The polarity detector is capable of identifying a polarity of the bipolar input signal to form an identified polarity. The waveform changer is connected to the voltage to frequency converter and polarity detector and is capable of generating a number of different waveforms in an audio frequency range in response to receiving the frequency signal from the voltage to frequency converter and in response to the identified polarity.
    Type: Grant
    Filed: September 30, 2008
    Date of Patent: August 12, 2014
    Assignee: The Boeing Company
    Inventors: Samuel I. Green, Raymond W. Bosenbecker, Jr.
  • Patent number: 8804989
    Abstract: A resonance device for a speaker is provided. The device includes a speaker unit and a resonance unit. The speaker unit outputs a sound corresponding to a signal. The resonance unit is fixed to the speaker unit to provide a space for allowing a sound to resonate. The resonance unit is flexible, and the space for allowing a sound to resonate is variable.
    Type: Grant
    Filed: May 11, 2011
    Date of Patent: August 12, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-Yeup Kim, Jung-Eun Han, Joon-Rae Cho, Ki-Won Kim, Sung-Wook Kang
  • Patent number: 8804986
    Abstract: Systems, apparatus, devices, and methods for converting electrical signals into sound using an acoustic transducer. The inventive acoustic transducer utilizes the motion of an airfoil shaped element to generate a sound wave, with the airfoil element being driven in response to an electrical signal input to a suitable driving element. In some embodiments, the airfoil element or elements act to mechanically couple the motion of an armature attached to the driver to the surrounding air, producing sound waves in a more efficient manner than typical acoustic transducer devices. Embodiments of the invention may be used in the design of loudspeakers, earpieces, headphones, and other devices for which a high efficiency transducer is desired.
    Type: Grant
    Filed: October 11, 2011
    Date of Patent: August 12, 2014
    Assignee: AliphCom
    Inventor: Thomas A. Donaldson
  • Patent number: 8798302
    Abstract: A flat panel loudspeaker with such an emission characteristic is obtained which, in the event of the flat panel loudspeaker being set up inversely, provides an improved listening result in that a loudspeaker is provided within the housing, and a sound conduction is configured such that sound from the loudspeaker is conducted outward via an acoustic aperture within the housing for undirected emission.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: August 5, 2014
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Lutz Ehrig, Daniel Beer
  • Patent number: 8774437
    Abstract: A speaker box and a speaker device that can be manufactured at low cost and that provide a sound-absorbing effect. A speaker box of a speaker device includes a baffle, four intermediate plates, and a rear plate. The baffle plate has a speaker mount hole at the center. Each intermediate plate has a hole. The intermediate plates are stacked such that they are alternately reversed or rotated so that the holes in the adjacent intermediate plates communicate with each other while the holes are shifted from with each other. A hollow space with a sound-absorbing effect is formed by the holes in the speaker box.
    Type: Grant
    Filed: November 9, 2007
    Date of Patent: July 8, 2014
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takeshi Nakamura, Takao Mouri
  • Patent number: 8763234
    Abstract: A method for making a thermoacoustic module is disclosed. An insulating substrate and a sound wave generator are provided. A conductive paste is screen printed on the insulating substrate to form a first patterned conductive paste layer. The sound wave generator is placed on the first patterned conductive paste layer and at least partially suspended above the insulating substrate by the patterned conductive paste layer.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: July 1, 2014
    Assignee: Beijing FUNATE Innovation Technology Co., Ltd.
    Inventors: Liang Liu, Li Qian
  • 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: 8737659
    Abstract: The present invention allows for the further enhancement of a low pitch range with a simple structure without increasing the size. The present invention is provided with: a pipe (102) open one end side and the other end side; a speaker unit (104) that is coaxial with the pipe (102), arranged at the one end side of the pipe (102), and driven on the basis of an audio signal; and an edge-cum-diaphragm (102B) that is coaxial with the pipe (102), installed at the other end side of the pipe (102), and vibrates in response to a sound wave that passes through the pipe (102). While the pipe (102) functions as a resonance tube by being excited to vibration with the sound wave that is radiated from the speaker unit (104) and passes through the pipe (102), the edge-cum-diaphragm (102B) functions as a passive radiator by vibrating in response to the sound wave that passes through the pipe (102).
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: May 27, 2014
    Assignee: Sony Corporation
    Inventors: Nobukazu Suzuki, Yoshio Ohashi
  • Patent number: 8718310
    Abstract: Methods and apparatus are provided for waveguide structures and speaker assemblies. In one embodiment, a waveguide may include an input aperture configured to receive a sound signal from a sound source, and a plurality of isolated sound paths having substantially equal path lengths. Each isolated sound path may be formed within a housing of the waveguide and formed with a curved path to reduce the depth of the waveguide. The waveguide may include a plurality of plugs, wherein each plug divides an output of one of the isolated sound paths into a plurality of output sound paths and defines a plurality of output apertures of the waveguide. Each output sound path is characterized by a reduced width relative to the output of the isolated sound path, the plurality of output apertures configured to output a combined sound signal based, at least in part, on the plurality of sound signals.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: May 6, 2014
    Assignee: QSC Holdings, Inc.
    Inventor: Michael Adams
  • Patent number: 8699737
    Abstract: A loudspeaker having a vented enclosure with at least one tuning port includes a fan inside the vented enclosure, which is positioned to produce airflow for cooling the magnetic assembly of the loudspeaker's transducer. Airflow within said vented enclosure is produced such that air within the enclosure is exchanged with outside air through the at least one tuning port. Typically, the vented enclosure will have two tuning ports wherein outside air drawn into the enclosure through one of the tuning ports is circulated out through the other tuning port. Preferably, the outside air drawn in through one tuning port is circulated directly around the transducer magnetic assembly for greatest heat dissipation.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: April 15, 2014
    Assignee: Meyer Sound Laboratories, Incorporated
    Inventor: Jean-Pierre Mamin
  • Patent number: 8660288
    Abstract: Provided is a technique for improving frequency characteristics by an acoustics-related method so that a sound is heard with natural frequency characteristics when a sound-isolating earphone is fitted in a human ear. A sound-isolating earphone is provided with two or more electroacoustic transducers, wherein independently generated sound waves are passed through isolated sound leading pipes and are mixed just before an entrance of an external auditory canal, and a sound wave of which is twice the difference between path lengths of the two sound leading pipes is attenuated. This serves to provide an easy-to-hear improved sound quality by suppressing the sound wave at around 6 kHz that is transmitted with characteristically high intensity in a sound-isolating earphone.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: February 25, 2014
    Assignee: Ocharaku Co. Ltd.
    Inventor: Makoto Yamagishi
  • 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