US3430007A - Dynamic transducer with wall mounted diaphragm - Google Patents

Dynamic transducer with wall mounted diaphragm Download PDF

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Publication number
US3430007A
US3430007A US539250A US3430007DA US3430007A US 3430007 A US3430007 A US 3430007A US 539250 A US539250 A US 539250A US 3430007D A US3430007D A US 3430007DA US 3430007 A US3430007 A US 3430007A
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US
United States
Prior art keywords
diaphragm
wall
transducer
magnet
sound
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US539250A
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English (en)
Inventor
David E Thielen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROLEN DIVERSIFIED INVESTORS Inc
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ROLEN DIVERSIFIED INVESTORS Inc
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Filing date
Publication date
Application filed by ROLEN DIVERSIFIED INVESTORS Inc filed Critical ROLEN DIVERSIFIED INVESTORS Inc
Application granted granted Critical
Publication of US3430007A publication Critical patent/US3430007A/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
    • H04R9/06—Loudspeakers
    • H04R9/066—Loudspeakers using the principle of inertia

Definitions

  • the invention relates to means for converting electrical energy into sound energy and is particularly concerned with a transducer or loudspeaker effective for use in sound or music systems such as address or background systems and in other environments in which sound is to be dissipated throughout a substantial volume.
  • a device of a related character is disclosed in the copending application of John L. Jamison, filed July 28, 1964, Ser. No. 385,592, now abandoned.
  • a transducer can be connected to the wall of a room in such a fashion that when the transducer is energized the entire wall or a substantial portion of it vibrates. This gives a general rather than a focal source. Equally. a transducer can be fastened to any vibratile panel such as a cabinet wall, desk top, a room ceiling or the like. This permits an unobtrusive or concealed installation.
  • Another object of the invention is to provide an improved sound transducer for inconspicuous installation and easy reinstallation.
  • a still further object of the invention is to provide a sound transducer which readily can be installed in existing structures without making any material disturbance therein and without requiring alterations in the construction or particular provision for transducer mounting.
  • Another object of the invention is to provide a sound transducer which has a long life in various environments and is generally protected from adverse influences in the environment; for example, outdoor weather or indoor fumes and the like.
  • Another object of the invention is to provide a sound transducer which can easily and quickly be installed by unskilled labor.
  • Another object of the invention is to provide a sound transducer which is relatively inexpensive to manufacture and which will operate for a protracted period without services, but which if service is needed can easily be disassembled.
  • FIGURE 1 is a cross section to an enlarged scale on a diametral plane through the axis of the sound transducer of the invention, the plane of section being indicated by the line 1-1 of FIGURE 2.;
  • FIGURE 2 is an end elevation to a reduced scale of the mechanism shown in FIGURE 1.
  • the sound transducer pursuant to the invention can readily be embodied in a number of different Ways but has been embodied commercially in the form disclosed herein.
  • the transducer is to be installed on any vibratile panel, referred to herein and in the claims as a wall.
  • a representative wall 6 or panel for convenience is considered as a normal building wall, usually fabricated for studding and a covering sheet such as gypsum board or lath and plaster or the like, but the wall 6 may even be a mold member such as a plank or any other comparable member.
  • the transducer Designed to cooperate with the wall 6 is the transducer itself.
  • This includes a magnet 7 usually formed of ferrous material, although a magnetic ceramic material can likewise be utilized.
  • the magnet 7 includes an outer cupshaped portion 8 leaving a hollow interior partially occupied by a central pole piece 9 symmetrical about an axis 11.
  • the pole piece 9 is secured in place by adhesive 10 and is conveniently augmented by a magnetic disk 12 secured thereto by a layer 13 of adhesive. All of these parts are magnetically permeable and one or more; for example, the piece 9, are magnetized.
  • the magnet 7 also includes an integral or separate pole piece such as a disk 14 secured in position by an adhesive 16 and constituting a peripheral pole piece disposed alongside of an air volume 17.
  • the central pole piece 9 including the disk 12 and the peripheral pole piece 14 and the cup 8 constituting substantially all of the magnet 7 define a figure of revolution about the axis 11.
  • the dimensions of the peripheral pole piece 14 and of the central pole piece comprised of the members 9 and 12 are such that an annular air gap 21 exists therebetween extending from the air volume 17 to the interior of the cup 8.
  • a generally planar but somewhat configured diaphragm 22 designed to abut and to extend across the magnet, particularly spanning the annular gap 21.
  • the diaphragm 22 is conveniently molded of a plastic material; for example, epoxy resin, fortified with fiber glass included therewith, so that the diaphragm, although capable of ready flexing at and some what above and below audible frequencies, is also effective as a mechanical support.
  • the diaphragm 22 around its periphery is shaped to provide a flange 23 designed to seat in a corresponding groove 24 around the outside of the magnet 7 and is also provided with external coarse threads 26.
  • a jacket 27 also conveniently formed of plastic, although not necessarily a reinforced plastic, encases the magnet 7.
  • the jacket is enlarged around its periphery to provide internal threads 28 engageable with the threads 26 and designed so that the jacket can be screwed upon the diaphragm 22. Depressions 30 in the diaphragm receive a wrench so that the diaphragm can be held as the jacket is rotated to form a tight joint. When the jacket is tightly in position, the parts, including the magnet, are all enclosed and protected against ambient conditions.
  • the diaphragm 22 adjacent its central portion 31 is somewhat thickened to provide a reinforcement and a shoulder 32 of annular configuration.
  • the shoulder supports a tube 33 of inert material on which a voice coil 34 is wound and fastened.
  • the tube 33 is adhesively secured to the shoulder 32 and the voice coil 34 is fast on the tube. Movements of the voice coil 34 are thus transmitted to the central portion of the diaphragm 22 and vice versa.
  • the voice coil has a pair of leads 36, each of which is secured to an individual one of a pair of conducting terminals 37 land 38 conveniently molded into the enlarged portion drilled and tapped to receive fastening screws 41 to hold individual ones of a pair of external conductors 42 detachably in place.
  • the central portion 31 of the diaphragm is also contoured to provide a support ring 46 integrally formed therewith and projecting from the diaphragm on the side thereof opposite to that of the voice coil.
  • the ring has a curved terminus 47 and at a convenient point has an opening 48 so that the conductors 42 can readily be passed therethrou-gh.
  • the diaphragm 22 in its central portion and preferably concentric with the axis 11 is enlarged to provide a hub 49 projecting in a direction away from the voice coil.
  • a suitable fastening member 51 Embedded in the hub 49 is a suitable fastening member 51.
  • the fastening member also includes a threaded extension 53.
  • the threaded extension 53 is provided with threads comparable to those of the usual wood screw.
  • Other extensions for adhesive attachment or carrying machine threads or a threaded socket or including a nail like member or otherwise constituting a support, fastener and sound transmitter can be provided.
  • the hub 49 does not project along the axis quite as far as does the ring 46, but the threaded part of the fastening member extends considerably farther along the axis.
  • this device In the installation of this device, it is simply taken in 'hand by a workman and the screw threads 53 are star-ted into the wall 6. The device is rotated as a body about the axis 11 until such time as the contoured edge 47 of the ring 46 is in firm abutment with the surface of the Wall '6. In the event the Wall itself will not receive the screw 53, a small block of wood, for example, can first be adhered to the wall and the screw can then be turned into the wood block.
  • the conductors 42 connected to the conductors 37 and 38 are joined to any suitable source of audio current.
  • the audio current in the voice coil 34 being situated in a magnetic field, causes the voice coil to move relative to the magnet 7.
  • the mass of the magnet and its associated materials is such with respect to that of the wall 6 that the wall itself vibrates very substantially in response to the movement of the coil. While of course the magnet 7 likewise is displaced, nevertheless a large portion of the electrical energy fed into the coil 34 is converted into vibratile energy of the Wall 6. Consequently, the wall and any associated structures vibrate with frequencies corresponding to those of the coil vibration, and the wall as a whole serves as a large diaphragm to dissipate the sound into the air.
  • the installation can be made either indoors or outdoors because the unit is entirely protected from its surroundings, and since the installation is made merely by rotating the unit about an axis with a single fastener, the labor of installation is easy and the transmission of the sound waves is readily accomplished in a highly satisfactory way withoutlunwanted nodes of vibration being transmitted to the 'wal Because of the small size of the unit, it is quite unobtrusive even if installed in plain sight, and no structural or decorative changes need be made in its support.
  • the unit can also be installed on the far side of a Wall or ceiling and so does not affect room appearance at all.
  • the device While the principal present use of the device is as a loudspeaker, it can also serve as a microphone converting vibrations of the wall into output current in the conductors 42 for use in the usual way.
  • a sound transducer for use with a wall comprising a magnet effective to establish a magnetic field, a vibratile diaphragm connected to said magnet, a voice coil disposed within said field and connected to said diaphragm, and a fastening member extending from said diaphragm in the vicinity of the connection of said voice coil thereto and adapted to engage said wall to support said sound transducer.
  • a sound transducer as in claim 2 in which said diaphragm has an annulus surrounding said fastening memher and adapted to abut said wall when said fastening member is engaged therewith.
  • a sound transducer as in claim 1 in which said magnet is substantially a figure of revolution about a central axis to provide a central pole piece and a peripheral pole piece spaced therefrom to leave an intervening gap, said diaphragm is approximately planar and extends perpendicularly to said axis across said gap, said voice coil projects from one side of said diaphragm and is disposed within said gap, and said fastening member projects from the other side of said diaphragm along said axis.
  • a sound transducer as in claim 1 in which said magnet and said voice coil are connected to said fastening member solely by said diaphragm.
  • a sound transducer as in claim 1 in which the mass of said magnet with respect to that of said wall causes said voice coil when energized correspondingly to vibrate said Wall in an audible manner.
  • a sound transducer as in claim 1 in Which said diaphragm is clamped on said magnet and said fastening member is a screw-threaded device.
  • a sound transducer as in claim 1 in which said diaphragm is held on said magnet by a jacket encasing said magnet.
  • a sound transducer as in claim 1 in which said diaphragm includes a conductor adapted to be connected to said voice coil.
US539250A 1966-03-16 1966-03-16 Dynamic transducer with wall mounted diaphragm Expired - Lifetime US3430007A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53925066A 1966-03-16 1966-03-16

Publications (1)

Publication Number Publication Date
US3430007A true US3430007A (en) 1969-02-25

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ID=24150437

Family Applications (1)

Application Number Title Priority Date Filing Date
US539250A Expired - Lifetime US3430007A (en) 1966-03-16 1966-03-16 Dynamic transducer with wall mounted diaphragm

Country Status (9)

Country Link
US (1) US3430007A (de)
BE (1) BE695607A (de)
CH (1) CH458447A (de)
DE (1) DE1512750A1 (de)
ES (1) ES337975A1 (de)
FR (1) FR1514600A (de)
GB (1) GB1123524A (de)
NL (1) NL6703973A (de)
SE (1) SE328912B (de)

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3524027A (en) * 1967-05-04 1970-08-11 Rolen Diversified Investors In Sound transducer with wall mounted diaphragm
US3553392A (en) * 1968-03-07 1971-01-05 Electronics Inc Of Pennsylvani Electrodynamic sound radiator
US3573396A (en) * 1964-02-05 1971-04-06 Electronic Res Ass Loudspeaker having improved diaphragm
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
FR2443784A1 (fr) * 1978-05-17 1980-07-04 Bodysonic Kk Convertisseur de signaux electriques en vibrations mecaniques dans la bande des frequences audibles
EP0054945A1 (de) * 1980-12-19 1982-06-30 Nissan Motor Co., Ltd. Lautsprecher für Automobil-Audiosystem
US4520237A (en) * 1981-09-25 1985-05-28 Kabushiki Kaisha Daini Seikosha Electrodynamic speaker
US4550428A (en) * 1982-06-08 1985-10-29 Nissan Motor Company, Limited Driver unit for automotive audio speaker
US4551849A (en) * 1982-05-11 1985-11-05 Nissan Motor Company, Limited Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium
US4914750A (en) * 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
US4926486A (en) * 1987-07-17 1990-05-15 Barsumian Bruce R Transducer assembly for automatic message system
US4951270A (en) * 1989-06-20 1990-08-21 Andrews Jay E Audio transducer apparatus
US5335284A (en) * 1993-11-23 1994-08-02 Lemons James W Coneless, no-moving-parts speaker
US5532980A (en) * 1994-11-14 1996-07-02 Sciencetech Inc. Vibrational anti-fouling system
US5546469A (en) * 1994-08-15 1996-08-13 Donahoe; Danny T. Sound transducer
US6151402A (en) * 1995-09-02 2000-11-21 New Transducers Limited Vibration transducers
US20020054690A1 (en) * 2000-11-08 2002-05-09 New Transducers Limited Loudspeaker driver
US6519349B1 (en) 1995-09-02 2003-02-11 New Transducers Limited Loudspeaker
US6618487B1 (en) * 1996-09-03 2003-09-09 New Transducers Limited Electro-dynamic exciter
US6751333B1 (en) 1995-09-02 2004-06-15 New Transducers Limited Inertial vibration transducers
US20050207609A1 (en) * 2004-02-19 2005-09-22 Oser R B Transducer for tactile applications and apparatus incorporating transducers
WO2005102780A1 (en) * 2004-04-19 2005-11-03 Toyota Boshoku Kabushiki Kaisha Audio devices for vehicles
US20060093179A1 (en) * 2004-10-15 2006-05-04 Desimone Michael J Electro-acoustic audio transducer
US20060126885A1 (en) * 2004-12-15 2006-06-15 Christopher Combest Sound transducer for solid surfaces
US20070025575A1 (en) * 2005-02-18 2007-02-01 So Sound Solutions Llc System and method for integrating transducers into body support structures
US20080044042A1 (en) * 2006-08-18 2008-02-21 Wei Jia Liu Sonic transducer
US7386137B2 (en) 2004-12-15 2008-06-10 Multi Service Corporation Sound transducer for solid surfaces
US20090010468A1 (en) * 2004-02-19 2009-01-08 Richard Barry Oser Actuation of floor systems using mechanical and electro-active polymer transducers
DE102009048866A1 (de) 2009-08-27 2011-03-03 Bösnecker, Robert, Dr. Akustisches Antriebselement mit Mittenloch
US20150289039A1 (en) * 2014-04-02 2015-10-08 Harman Becker Automotive Systems Gmbh Loudspeaker
CN105899181A (zh) * 2013-08-08 2016-08-24 伊沃索尼克有限责任公司 利用声音压力的振动装置及具备上述装置的人体刺激装置
WO2017087495A1 (en) * 2015-11-16 2017-05-26 Bongiovi Acoustics Llc Surface acoustic transducer
US9731211B2 (en) 2014-07-16 2017-08-15 Traxxas, L.P. On-board audio system for a model vehicle
US9741355B2 (en) 2013-06-12 2017-08-22 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
US9793872B2 (en) 2006-02-07 2017-10-17 Bongiovi Acoustics Llc System and method for digital signal processing
EP3273702A1 (de) * 2016-07-20 2018-01-24 BAE Systems PLC Gehäuse zur verbindung eines messwertaufnehmers für ein substrat
WO2018015711A1 (en) * 2016-07-20 2018-01-25 Bae Systems Plc Housing for connecting a transducer to a substrate
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9906858B2 (en) 2013-10-22 2018-02-27 Bongiovi Acoustics Llc System and method for digital signal processing
US9998832B2 (en) 2015-11-16 2018-06-12 Bongiovi Acoustics Llc Surface acoustic transducer
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
USD828461S1 (en) 2014-10-01 2018-09-11 Traxxas, LP Transducer mount
US10158337B2 (en) 2004-08-10 2018-12-18 Bongiovi Acoustics Llc System and method for digital signal processing
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
US10701505B2 (en) 2006-02-07 2020-06-30 Bongiovi Acoustics Llc. System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10848118B2 (en) 2004-08-10 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10959035B2 (en) 2018-08-02 2021-03-23 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US11202161B2 (en) 2006-02-07 2021-12-14 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US11211043B2 (en) 2018-04-11 2021-12-28 Bongiovi Acoustics Llc Audio enhanced hearing protection system
US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4495638A (en) * 1978-05-17 1985-01-22 Body Sonic Kabushiki Kaisha Audio-band electro-mechanical vibration converter
SE418665B (sv) * 1979-10-16 1981-06-15 Gustav Georg Arne Bolin Sett att forbettra akustiken i en lokal
CH645227A5 (fr) * 1981-12-22 1984-09-14 Multiphonie Sa Transducteur electro-acoustique.
FR2885760B1 (fr) * 2005-05-13 2007-09-28 Bernard Fradin Haut-parleur sans membrane

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366749A (en) * 1964-04-09 1968-01-30 Allen Alan A Audio transducer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3366749A (en) * 1964-04-09 1968-01-30 Allen Alan A Audio transducer

Cited By (78)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3573396A (en) * 1964-02-05 1971-04-06 Electronic Res Ass Loudspeaker having improved diaphragm
US3524027A (en) * 1967-05-04 1970-08-11 Rolen Diversified Investors In Sound transducer with wall mounted diaphragm
US3553392A (en) * 1968-03-07 1971-01-05 Electronics Inc Of Pennsylvani Electrodynamic sound radiator
US3792526A (en) * 1971-04-21 1974-02-19 Ltv Ling Altec Inc Method of sound transducer construction
FR2443784A1 (fr) * 1978-05-17 1980-07-04 Bodysonic Kk Convertisseur de signaux electriques en vibrations mecaniques dans la bande des frequences audibles
EP0054945A1 (de) * 1980-12-19 1982-06-30 Nissan Motor Co., Ltd. Lautsprecher für Automobil-Audiosystem
US4514599A (en) * 1980-12-19 1985-04-30 Nissan Motor Company, Limited Speaker for automotive vehicle audio system having a vehicle panel serving as sound-amplifying medium
US4520237A (en) * 1981-09-25 1985-05-28 Kabushiki Kaisha Daini Seikosha Electrodynamic speaker
US4551849A (en) * 1982-05-11 1985-11-05 Nissan Motor Company, Limited Vehicle panel speaker for automotive audio system utilizing part of a vehicle panel as a sound-producing medium
US4550428A (en) * 1982-06-08 1985-10-29 Nissan Motor Company, Limited Driver unit for automotive audio speaker
US4914750A (en) * 1987-07-13 1990-04-03 Avm Hess, Inc. Sound transducer
US4926486A (en) * 1987-07-17 1990-05-15 Barsumian Bruce R Transducer assembly for automatic message system
US4951270A (en) * 1989-06-20 1990-08-21 Andrews Jay E Audio transducer apparatus
US5335284A (en) * 1993-11-23 1994-08-02 Lemons James W Coneless, no-moving-parts speaker
US5546469A (en) * 1994-08-15 1996-08-13 Donahoe; Danny T. Sound transducer
US5532980A (en) * 1994-11-14 1996-07-02 Sciencetech Inc. Vibrational anti-fouling system
US6151402A (en) * 1995-09-02 2000-11-21 New Transducers Limited Vibration transducers
US6751333B1 (en) 1995-09-02 2004-06-15 New Transducers Limited Inertial vibration transducers
US6519349B1 (en) 1995-09-02 2003-02-11 New Transducers Limited Loudspeaker
US6618487B1 (en) * 1996-09-03 2003-09-09 New Transducers Limited Electro-dynamic exciter
US20020054690A1 (en) * 2000-11-08 2002-05-09 New Transducers Limited Loudspeaker driver
US7372968B2 (en) * 2000-11-08 2008-05-13 New Transducers Limited Loudspeaker driver
US20050207609A1 (en) * 2004-02-19 2005-09-22 Oser R B Transducer for tactile applications and apparatus incorporating transducers
US8761417B2 (en) 2004-02-19 2014-06-24 So Sound Solutions, Llc Tactile stimulation using musical tonal frequencies
US8077884B2 (en) 2004-02-19 2011-12-13 So Sound Solutions, Llc Actuation of floor systems using mechanical and electro-active polymer transducers
US20090010468A1 (en) * 2004-02-19 2009-01-08 Richard Barry Oser Actuation of floor systems using mechanical and electro-active polymer transducers
US7418108B2 (en) 2004-02-19 2008-08-26 So Sound Solutions, Llc Transducer for tactile applications and apparatus incorporating transducers
US8090138B2 (en) 2004-04-19 2012-01-03 Toyota Boshoku Kabushiki Kaisha Audio devices for vehicles
WO2005102780A1 (en) * 2004-04-19 2005-11-03 Toyota Boshoku Kabushiki Kaisha Audio devices for vehicles
US20080285769A1 (en) * 2004-04-19 2008-11-20 Kouichi Toyama Audio Devices for Vehicles
CN100439156C (zh) * 2004-04-19 2008-12-03 丰田纺织株式会社 车辆用音频设备
AU2005235055B2 (en) * 2004-04-19 2009-01-29 Fujitsu Ten Limited Audio devices for vehicles
US10666216B2 (en) 2004-08-10 2020-05-26 Bongiovi Acoustics Llc System and method for digital signal processing
US10848118B2 (en) 2004-08-10 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10158337B2 (en) 2004-08-10 2018-12-18 Bongiovi Acoustics Llc System and method for digital signal processing
US11431312B2 (en) 2004-08-10 2022-08-30 Bongiovi Acoustics Llc System and method for digital signal processing
US20060093179A1 (en) * 2004-10-15 2006-05-04 Desimone Michael J Electro-acoustic audio transducer
US7386137B2 (en) 2004-12-15 2008-06-10 Multi Service Corporation Sound transducer for solid surfaces
US20060126885A1 (en) * 2004-12-15 2006-06-15 Christopher Combest Sound transducer for solid surfaces
US7981064B2 (en) 2005-02-18 2011-07-19 So Sound Solutions, Llc System and method for integrating transducers into body support structures
US8617089B2 (en) 2005-02-18 2013-12-31 So Sound Solutions Llc Inducing tactile stimulation of musical tonal frequencies
US20070025575A1 (en) * 2005-02-18 2007-02-01 So Sound Solutions Llc System and method for integrating transducers into body support structures
US11202161B2 (en) 2006-02-07 2021-12-14 Bongiovi Acoustics Llc System, method, and apparatus for generating and digitally processing a head related audio transfer function
US10848867B2 (en) 2006-02-07 2020-11-24 Bongiovi Acoustics Llc System and method for digital signal processing
US10291195B2 (en) 2006-02-07 2019-05-14 Bongiovi Acoustics Llc System and method for digital signal processing
US10069471B2 (en) 2006-02-07 2018-09-04 Bongiovi Acoustics Llc System and method for digital signal processing
US9793872B2 (en) 2006-02-07 2017-10-17 Bongiovi Acoustics Llc System and method for digital signal processing
US10701505B2 (en) 2006-02-07 2020-06-30 Bongiovi Acoustics Llc. System, method, and apparatus for generating and digitally processing a head related audio transfer function
US11425499B2 (en) 2006-02-07 2022-08-23 Bongiovi Acoustics Llc System and method for digital signal processing
US20080044042A1 (en) * 2006-08-18 2008-02-21 Wei Jia Liu Sonic transducer
DE102009048866A1 (de) 2009-08-27 2011-03-03 Bösnecker, Robert, Dr. Akustisches Antriebselement mit Mittenloch
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9741355B2 (en) 2013-06-12 2017-08-22 Bongiovi Acoustics Llc System and method for narrow bandwidth digital signal processing
US10999695B2 (en) 2013-06-12 2021-05-04 Bongiovi Acoustics Llc System and method for stereo field enhancement in two channel audio systems
US10412533B2 (en) 2013-06-12 2019-09-10 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
EP3031438A4 (de) * 2013-08-08 2017-04-19 EVOSONIC Co., Ltd. Schwingungsvorrichtung unter verwendung von schalldruck sowie vorrichtung zur stimulation des menschlichen körpers damit
EP3766471A1 (de) * 2013-08-08 2021-01-20 EVOSONIC Co., Ltd. Schwingungsvorrichtung unter verwendung von schalldruck sowie vorrichtung zur stimulation des menschlichen körpers damit
CN105899181A (zh) * 2013-08-08 2016-08-24 伊沃索尼克有限责任公司 利用声音压力的振动装置及具备上述装置的人体刺激装置
US9906858B2 (en) 2013-10-22 2018-02-27 Bongiovi Acoustics Llc System and method for digital signal processing
US10313791B2 (en) 2013-10-22 2019-06-04 Bongiovi Acoustics Llc System and method for digital signal processing
US11418881B2 (en) 2013-10-22 2022-08-16 Bongiovi Acoustics Llc System and method for digital signal processing
US10917722B2 (en) 2013-10-22 2021-02-09 Bongiovi Acoustics, Llc System and method for digital signal processing
US20150289039A1 (en) * 2014-04-02 2015-10-08 Harman Becker Automotive Systems Gmbh Loudspeaker
US9380390B2 (en) * 2014-04-02 2016-06-28 Harman Becker Automotive Systems Gmbh Loudspeaker
US10639000B2 (en) 2014-04-16 2020-05-05 Bongiovi Acoustics Llc Device for wide-band auscultation
US10820883B2 (en) 2014-04-16 2020-11-03 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US11284854B2 (en) 2014-04-16 2022-03-29 Bongiovi Acoustics Llc Noise reduction assembly for auscultation of a body
US9731211B2 (en) 2014-07-16 2017-08-15 Traxxas, L.P. On-board audio system for a model vehicle
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USD828461S1 (en) 2014-10-01 2018-09-11 Traxxas, LP Transducer mount
USD834111S1 (en) 2014-10-01 2018-11-20 Traxxas Lp Transducer mount
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WO2017087495A1 (en) * 2015-11-16 2017-05-26 Bongiovi Acoustics Llc Surface acoustic transducer
US9906867B2 (en) 2015-11-16 2018-02-27 Bongiovi Acoustics Llc Surface acoustic transducer
EP3273702A1 (de) * 2016-07-20 2018-01-24 BAE Systems PLC Gehäuse zur verbindung eines messwertaufnehmers für ein substrat
WO2018015711A1 (en) * 2016-07-20 2018-01-25 Bae Systems Plc Housing for connecting a transducer to a substrate
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Also Published As

Publication number Publication date
GB1123524A (en) 1968-08-14
SE328912B (de) 1970-09-28
CH458447A (fr) 1968-06-30
NL6703973A (de) 1967-09-18
BE695607A (de) 1967-09-18
DE1512750A1 (de) 1969-05-29
ES337975A1 (es) 1968-05-01
FR1514600A (fr) 1968-02-23

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