WO1997009858A1 - Transducteurs de vibrations - Google Patents

Transducteurs de vibrations Download PDF

Info

Publication number
WO1997009858A1
WO1997009858A1 PCT/GB1996/002148 GB9602148W WO9709858A1 WO 1997009858 A1 WO1997009858 A1 WO 1997009858A1 GB 9602148 W GB9602148 W GB 9602148W WO 9709858 A1 WO9709858 A1 WO 9709858A1
Authority
WO
WIPO (PCT)
Prior art keywords
panel
motor coil
vibration transducer
fastener
assembly
Prior art date
Application number
PCT/GB1996/002148
Other languages
English (en)
Inventor
Henry Azima
Martin Colloms
Neil Harris
Original Assignee
New Transducers Limited
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=34865240&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=WO1997009858(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Priority claimed from GBGB9517918.0A external-priority patent/GB9517918D0/en
Priority claimed from GBGB9522281.6A external-priority patent/GB9522281D0/en
Priority claimed from GBGB9606836.6A external-priority patent/GB9606836D0/en
Priority to SK256-98A priority Critical patent/SK25698A3/sk
Priority to US09/011,831 priority patent/US6151402A/en
Priority to NZ316550A priority patent/NZ316550A/xx
Priority to IL12337196A priority patent/IL123371A/en
Priority to DE69601734T priority patent/DE69601734T2/de
Priority to ES96929393T priority patent/ES2131956T3/es
Priority to EA199800248A priority patent/EA000376B1/ru
Priority to AU68808/96A priority patent/AU703061B2/en
Priority to CA002229856A priority patent/CA2229856A1/fr
Priority to CZ98575A priority patent/CZ57598A3/cs
Application filed by New Transducers Limited filed Critical New Transducers Limited
Priority to CZ98576A priority patent/CZ57698A3/cs
Priority to PCT/GB1996/002148 priority patent/WO1997009858A1/fr
Priority to JP9510951A priority patent/JPH11512252A/ja
Priority to TR1998/00369T priority patent/TR199800369T1/xx
Priority to RO98-00632A priority patent/RO119055B1/ro
Priority to BR9610440A priority patent/BR9610440A/pt
Priority to DK96929393T priority patent/DK0847675T3/da
Priority to EP96929393A priority patent/EP0847675B1/fr
Priority to PL96325284A priority patent/PL325284A1/xx
Priority to AT96929393T priority patent/ATE177583T1/de
Priority to HU9802389A priority patent/HUP9802389A2/hu
Publication of WO1997009858A1 publication Critical patent/WO1997009858A1/fr
Priority to MXPA/A/1998/001440A priority patent/MXPA98001440A/xx
Priority to HK98109441A priority patent/HK1008639A1/xx

Links

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
    • H04R9/02—Details
    • H04R9/025—Magnetic circuit
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H04R7/045—Plane diaphragms using the distributed mode principle, i.e. whereby the acoustic radiation is emanated from uniformly distributed free bending wave vibration induced in a stiff panel and not from pistonic motion

Definitions

  • the invention relates to transducers and more particularly to vibration transducers for loudspeakers comprising panel-form acoustic radiating elements.
  • a panel-form loudspeaker comprising:- a resonant multi-mode radiator element being a unitary sandwich panel formed of two skins of material with a spacing core of transverse cellular construction, wherein the panel is such as to have ratio of bending stiffness (B) , in all orientations, to the cube power of panel mass per unit surface area ( ⁇ ) of at least 10; a mounting means which supports the panel or attaches to it a supporting body, in a free undamped manner; and an electro-mechanical drive means coupled to the panel which serves to excite a multi-modal resonance in the radiator panel in response to an electrical input within a working frequency band for the loudspeaker.
  • B bending stiffness
  • ⁇ cube power of panel mass per unit surface area
  • Embodiments of the present invention use members of nature, structure and configuration achievable generally and/or specifically by implementing teachings of our co- pending PCT application no. (our case P.5711) of even date herewith.
  • Such members thus have capability to sustain and propagate input vibrational energy by bending waves in operative area(s) extending transversely of thickness often but not necessarily to edges of the member(s); are configured with or without anisotropy of bending stiffness to have resonant mode vibration components distributed over said area(s) beneficially for acoustic coupling with ambient air; and have predetermined preferential locations or sites within said area for transducer means, particularly operationally active or moving part(s) thereof effective in relation to acoustic vibrational activity in said area(s) and signals, usually electrical, corresponding to acoustic content of such vibrational activity.
  • This invention is particularly concerned with active acoustic devices in the form of loudspeakers.
  • the present invention provides a vibration transducer to vibrate a member having a face, characterised by a motor coil assembly having a coil rigidly fixed to a tubular member, the assembly being adapted to be fixed to the said face of the member, and by a magnet assembly comprising opposed disc-like pole pieces, the periphery of one of which pole pieces is arranged to be disposed with and adjacent to the motor coil assembly, and the periphery of the other of which pole pieces is formed with a surrounding flange adapted to surround and to be disposed adjacent to the motor coil assembly, and characterised in that the magnet assembly is adapted to be secured at its centre to the said member to be vibrated.
  • the transducer may comprise fixing means to secure the magnet assembly to the member.
  • the fixing means may comprise a fastener adapted to engage in a cavity in the member.
  • the fastener may comprise a spacer for spacing the peripheries of the pole pieces from the said member.
  • the vibration transducer may comprise complementary motor coil assemblies and magnet assemblies adapted for mounting on opposed faces of the said member, and means tying the centres of the magnet assemblies together for push/pull operation.
  • the fastener may have heads at opposite ends and adapted to engage the respective magnet assemblies, the fastener comprising a pair of interengaging screw-threaded portions, and having spacer means adapted for disposition adjacent to the fastener and adapted for sandwiching between the respective magnet assemblies and the opposed faces of the said member.
  • the invention is a loudspeaker characterised by a distributed mode acoustic radiator and by a transducer as described above coupled to vibrate the radiator to cause it to resonate.
  • Figure 2a is a partial section on the line A-A of Figure 1;
  • Figure 2b is an enlarged cross-section through a distributed mode radiator of the kind shown in Figure 2a and showing two alternative constructions;
  • Figure 3 is a diagram of a first embodiment of transducer according to the present invention.
  • Figure 4 is a diagram a second embodiment of transducer according to the present invention.
  • a panel-form loudspeaker (81) of the kind described and claimed in our co-pending International application No. (our case P.5711) of even date herewith comprising a rectangular frame (1) carrying a resilient suspension (3) round its inner periphery which supports a distributed mode sound radiating panel (2) .
  • a transducer (9) e.g as described in detail with reference to our co-pending International applications Nos. (our cases P.5683/4/5) of even date herewith, is mounted wholly and exclusively on or in the panel (2) at a predetermined location defined by dimensions x and y_, the position of which location is calculated as described in our co-pending International application No. (our case P.5711) of even date herewith, to launch bending waves into the panel to cause the panel to resonate to radiate an acoustic output.
  • the transducer (9) is driven by a signal amplifier (10), e.g. an audio amplifier, connected to the transducer by conductors (28) .
  • a signal amplifier (10) e.g. an audio amplifier
  • Amplifier loading and power requirements can be entirely normal, similar to conventional cone type speakers, sensitivity being of the order of 86 - 88dB/watt under room loaded conditions.
  • Amplifier load impedance is largely resistive at 6 ohms, power handling 20-80 watts. Where the panel core and/or skins are of metal, they may be made to act as a heat sink for the transducer to remove heat from the motor coil of the transducer and thus improve power handling.
  • Figures 2a and 2b are partial typical cross-sections through the loudspeaker (81) of Figure 1.
  • Figure 2a shows that the frame (1), surround (3) and panel (2) are connected together by respective adhesive-bonded joints (20) .
  • Suitable materials for the frame include lightweight framing, e.g. picture framing of extruded metal e.g. aluminium alloy or plastics.
  • Suitable surround materials include resilient materials such as foam rubber and foam plastics.
  • Suitable adhesives for the joints (20) include epoxy, acrylic and cyano-acrylate etc. adhesives.
  • Figure 2b illustrates, to an enlarged scale, that the panel (2) is a rigid lightweight panel having a core (22) e.g. of a rigid plastics foam (97) e.g. cross linked polyvinylchloride or a cellular matrix (98) i.e. a honeycomb matrix of metal foil, plastics or the like, with the cells extending transversely to the plane of the panel, and enclosed by opposed skins (21) e.g. of paper, card, plastics or metal foil or sheet.
  • the skins are of plastics, they may be reinforced with fibres e.g. of carbon, glass, Kevlar (RTM) or the like in a manner known per se to increase their modulus.
  • RTM Kevlar
  • Envisaged skin layer materials and reinforcements thus include carbon, glass, Kevlar (RTM), Nomex (RTM) i.e. aramid etc. fibres in various lays and weaves, as well as paper, bonded paper laminates, melamine, and various synthetic plastics films of high modulus, such as Mylar (RTM) , Kaptan (RTM) , polycarbonate, phenolic, polyester or related plastics, and fibre reinforced plastics, etc. and metal sheet or foil.
  • Investigation of the Vectra grade of liquid crystal polymer thermoplastics shows that they may be useful for the injection moulding of ultra thin skins or shells of smaller size, say up to around 30cm diameter. This material self forms an orientated crystal structure in the direction of injection, a preferred orientation for the good propagation of treble energy from the driving point to the panel perimeter.
  • thermoplastics allow for the mould tooling to carry location and registration features such as grooves or rings for the accurate location of transducer parts e.g. the motor coil, and the magnet suspension. Additional with some weaker core materials it is calculated that it would be advantageous to increase the skin thickness locally e.g. in an area or annulus up to 150% of the transducer diameter, to reinforce that area and beneficially couple vibration energy into the panel. High frequency response will be improved with the softer foam materials by this means.
  • Envisaged core layer materials include fabricated honeycombs or corrugations of aluminium alloy sheet or foil, or Kevlar (RTM), Nomex (RTM), plain or bonded papers, and various synthetic plastics films, as well as expanded or foamed plastics or pulp materials, even aerogel metals if of suitably low density.
  • Some suitable core layer materials effectively exhibit usable self-skinning in their manufacture and/or otherwise have enough inherent stiffness for use without lamination between skin layers.
  • a high performance cellular core material is known under the trade name 'Rohacell' which may be suitable as a radiator panel and which is without skins. In practical terms, the aim is for an overall lightness and stiffness suited to a particular purpose, specifically including optimising contributions from core and skin layers and transitions between them.
  • the suspension (3) may damp the edges of the panel (2) to prevent excessive edge movement of the panel. Additionally or alternatively, further damping may be applied, e.g. as patches, bonded to the panel in selected positions to damp excessive movement to distribute resonance equally over the panel.
  • the patches may be of bitumen-based material, as commonly used in conventional loudspeaker enclosures or may be of a resilient or rigid polymeric sheet material. Some materials, notably paper and card, and some cores may be self-damping.
  • the damping may be increased in the construction of the panels by employing resiliently setting, rather than rigid setting adhesives. Effective said selective damping includes specific application to the panel including its sheet material of means permanently associated therewith. Edges and corners can be particularly significant for dominant and less dispersed low frequency vibration modes of panels hereof.
  • Edge-wise fixing of damping means can usefully lead to a panel with its said sheet material fully framed, though their corners can often be relatively free, say for desired extension to lower frequency operation. Attachment can be by adhesive or self-adhesive materials. Other forms of useful damping, particularly in terms of more subtle effects and/or mid- and higher frequencies can be by way of suitable mass or masses affixed to the sheet material at predetermined effective medial localised positions of said area.
  • An acoustic panel as described above is bi ⁇ directional.
  • the sound energy from the back is not strongly phase related to that from the front. Consequently there is the benefit of overall summation of acoustic power in the room, sound energy of uniform frequency distribution, reduced reflective and standing wave effects and with the advantage of superior reproduction of the natural space and ambience in the reproduced sound recordings.
  • Figure 3 illustrates an embodiment of transducer (9) for launching bending waves into a rigid lightweight distributed mode radiator panel (2), e.g. of the kind shown in Figures 1 and 2 comprising a core (22) enclosed by opposed skins (21), to cause the panel to resonate.
  • a rigid lightweight distributed mode radiator panel (2) e.g. of the kind shown in Figures 1 and 2 comprising a core (22) enclosed by opposed skins (21), to cause the panel to resonate.
  • the transducer comprises a coil (13) rigidly fixed, e.g. by means of an adhesive, on the outside of a coil former (18) which is rigidly bonded to a surface skin (21) of the radiator panel (2), e.g. by means of an epoxy adhesive bond (16).
  • a magnet (15) is enclosed by a pair of poles (14), one of which is disc-like and is disposed with its periphery close to the interior of the coil former (18), and the other of which has a peripheral flange (90) arranged to surround the coil (13).
  • the magnet assembly including the magnet (15) and poles (14) is mounted on the panel (2) by means of a fixing (93), e.g. of metal or hard plastics, which passes through a cavity (29) extending through the panel (2) .
  • the fixing (93) comprises a complementary pair of threaded members (91,92) each having heads (95), one of which heads bears against an outer face of the transducer (9) and the other of which heads bear against a face of the panel (2) on the side of the panel opposite to that on which the transducer is mounted.
  • a spacer (127) is trapped between the transducer (9) and the panel (2) to space the transducer from the panel.
  • the transducer (9) of Figure 3 operates by locally resiliently bending the panel between the fixing (93) and the former (18) when an acoustic signal is applied to the transducer to launch bending waves into the panel to cause it to resonate.
  • the transducer arrangement (9) of Figure 4 is similar to that described in Figure 3, except that in this embodiment the transducer comprises complementary push/pull drivers of the kind shown in Figure 3 disposed on opposite sides of the panel.
  • a fixing member (93) is arranged to pass through an aperture (29) in the panel (2) to tie the two transducers together and to the panel.
  • the fixing member (93) comprises opposed generally complementary parts each formed with a head (95) which are clamped against the axial extremities of the respective pair of transducers (9) to couple the drivers together.
  • the complementary parts of the fixing member (93) are secured together by complementary screw-threaded portions (94,96).
  • the fixing member may be of any suitable material e.g. plastics or metal .
  • the transducer device (9) is rigidly clamped to the panel (2) by means of rigid pads (19), e.g. of hard plastics, positioned between the panel and the poles (14) adjacent to the aperture (29), whereby the transducer works to launch bending waves into the panel by local resilient bending of the panel between the pads and the coil former (18) .
  • rigid pads (19) e.g. of hard plastics

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Surgical Instruments (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Reciprocating, Oscillating Or Vibrating Motors (AREA)
  • Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Abstract

L'invention concerne un transducteur de vibrations (9) destiné à faire vibrer un élément (2) qui a une face, caractérisé: par un ensemble bobine d'entraînement dont la bobine (13) est fixée de manière rigide à une pièce tubulaire (18), cet ensemble étant destiné à être rattaché à ladite face de l'élément, et par un ensemble aimant (15) qui comprend des pièces opposées en forme de disque tenant lieu de pôle; la périphérie de l'une de ces pièces est destinée à être installée avec l'ensemble bobine d'entraînement, en position adjacente, tandis que la périphérie de l'autre pièce comporte une bride de pourtour (90) conçue pour entourer l'ensemble bobine d'entraînement, également en position adjacente. Enfin, le transducteur est caractérisé en ce que l'ensemble aimant est destiné à être fixé en son centre à l'élément qui doit être mis en vibration.
PCT/GB1996/002148 1995-09-02 1996-09-02 Transducteurs de vibrations WO1997009858A1 (fr)

Priority Applications (23)

Application Number Priority Date Filing Date Title
EP96929393A EP0847675B1 (fr) 1995-09-02 1996-09-02 Transducteurs de vibrations
PL96325284A PL325284A1 (en) 1995-09-02 1996-09-02 Vibration transducer
AT96929393T ATE177583T1 (de) 1995-09-02 1996-09-02 Schwingungswandler
HU9802389A HUP9802389A2 (hu) 1995-09-02 1996-09-02 Rezgéskeltő átalakító és hangfal
JP9510951A JPH11512252A (ja) 1995-09-02 1996-09-02 振動トランスジューサ
NZ316550A NZ316550A (en) 1995-09-02 1996-09-02 Vibration transducers
IL12337196A IL123371A (en) 1995-09-02 1996-09-02 Vibration transducers
DE69601734T DE69601734T2 (de) 1995-09-02 1996-09-02 Schwingungswandler
ES96929393T ES2131956T3 (es) 1995-09-02 1996-09-02 Transductores de vibraciones.
EA199800248A EA000376B1 (ru) 1995-09-02 1996-09-02 Преобразователь колебаний
AU68808/96A AU703061B2 (en) 1995-09-02 1996-09-02 Vibration transducers
CA002229856A CA2229856A1 (fr) 1995-09-02 1996-09-02 Transducteurs de vibrations
CZ98575A CZ57598A3 (cs) 1995-09-02 1996-09-02 Vibrační měnič
SK256-98A SK25698A3 (en) 1995-09-02 1996-09-02 Vibration transducers
CZ98576A CZ57698A3 (cs) 1995-09-02 1996-09-02 Reproduktor obsahující panelové akustické vyzařující prvky
PCT/GB1996/002148 WO1997009858A1 (fr) 1995-09-02 1996-09-02 Transducteurs de vibrations
US09/011,831 US6151402A (en) 1995-09-02 1996-09-02 Vibration transducers
TR1998/00369T TR199800369T1 (xx) 1995-09-02 1996-09-02 Titre�im d�n��t�r�c�leri.
RO98-00632A RO119055B1 (ro) 1995-09-02 1996-09-02 Traductor de vibraţii şi difuzor pentru utilizarea acestuia
BR9610440A BR9610440A (pt) 1995-09-02 1996-09-02 Transdutores de vibração
DK96929393T DK0847675T3 (da) 1995-09-02 1996-09-02 Vibrationstransducere
MXPA/A/1998/001440A MXPA98001440A (en) 1995-09-02 1998-02-23 Vibracio transducers
HK98109441A HK1008639A1 (en) 1995-09-02 1998-07-28 Vibration transducers

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
GBGB9517918.0A GB9517918D0 (en) 1995-09-02 1995-09-02 Acoustic device
GB9517918.0 1995-09-02
GBGB9522281.6A GB9522281D0 (en) 1995-10-31 1995-10-31 Acoustic device
GB9522281.6 1995-10-31
GB9606836.6 1996-03-30
GBGB9606836.6A GB9606836D0 (en) 1996-03-30 1996-03-30 Acoustic device
PCT/GB1996/002148 WO1997009858A1 (fr) 1995-09-02 1996-09-02 Transducteurs de vibrations

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US09/011,831 Continuation-In-Part US6151402A (en) 1995-09-02 1996-09-02 Vibration transducers

Publications (1)

Publication Number Publication Date
WO1997009858A1 true WO1997009858A1 (fr) 1997-03-13

Family

ID=34865240

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/002148 WO1997009858A1 (fr) 1995-09-02 1996-09-02 Transducteurs de vibrations

Country Status (20)

Country Link
EP (1) EP0847675B1 (fr)
JP (1) JPH11512252A (fr)
AT (1) ATE177583T1 (fr)
AU (1) AU703061B2 (fr)
BR (1) BR9610440A (fr)
CA (1) CA2229856A1 (fr)
CZ (2) CZ57598A3 (fr)
DE (1) DE69601734T2 (fr)
DK (1) DK0847675T3 (fr)
EA (1) EA000376B1 (fr)
ES (1) ES2131956T3 (fr)
HK (1) HK1008639A1 (fr)
HU (1) HUP9802389A2 (fr)
IL (1) IL123371A (fr)
NZ (1) NZ316550A (fr)
PL (1) PL325284A1 (fr)
RO (1) RO119055B1 (fr)
SK (1) SK25698A3 (fr)
TR (1) TR199800369T1 (fr)
WO (1) WO1997009858A1 (fr)

Cited By (39)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998042536A1 (fr) * 1997-03-22 1998-10-01 New Transducers Limited Vehicules de tourisme equipes de haut-parleurs munis d'elements radiants acoustiques en forme de panneau
WO1998052383A1 (fr) * 1997-05-10 1998-11-19 New Transducers Limited Transducteur de vibrations pour haut-parleur resonant en forme de panneau, et haut-parleur equipe dudit transducteur
WO1999002012A1 (fr) * 1997-07-03 1999-01-14 New Transducers Limited Haut-parleurs en forme de panneaux
WO1999060817A1 (fr) * 1998-05-15 1999-11-25 Harman Audio Electronic Systems Gmbh Dispositif pour exciter de maniere dynamique des haut-parleurs a panneaux
WO2001067813A1 (fr) * 2000-03-09 2001-09-13 Osseofon Ab Vibreur electromagnetique
US6304435B1 (en) 1998-11-12 2001-10-16 Acer Incorporated Laptop computer with flat panel speakers
US6324294B1 (en) 1996-09-03 2001-11-27 New Transducers Limited Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
WO2001093634A1 (fr) * 2000-06-02 2001-12-06 P & B Research Ab Vibrateur destine a une prothese auditive a conduction osseuse
WO2001093633A1 (fr) * 2000-06-02 2001-12-06 P & B Research Ab Vibrateur pour appareils de correction auditive a conduction osseuse
US6411723B1 (en) 1998-06-22 2002-06-25 Slab Technology Limited Loudspeakers
WO2003096744A1 (fr) * 2002-05-10 2003-11-20 Osseofon Ab Elements d'un vibrateur electromagnetique
US6925191B2 (en) 1999-07-23 2005-08-02 Digital Sonics Llc Flat panel speaker
GB2418560A (en) * 2004-09-22 2006-03-29 Citizen Electronics Electro-dynamic exciter
US7447322B2 (en) 2004-01-13 2008-11-04 Brookstone Purchasing, Inc. Speaker having a transparent panel
US7471801B2 (en) 2002-05-10 2008-12-30 Osseofon Ab Device for the generation of or monitoring of vibrations
US7548854B2 (en) 2002-01-31 2009-06-16 Awi Licensing Company Architectural sound enhancement with pre-filtered masking sound
EP2819432A1 (fr) * 2013-06-27 2014-12-31 The Boeing Company Système de haut-parleur à écran plat
US9014413B2 (en) 2013-08-21 2015-04-21 The Boeing Company Dual coil loudspeaker system
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
US9615189B2 (en) 2014-08-08 2017-04-04 Bongiovi Acoustics Llc Artificial ear apparatus and associated methods for generating a head related audio transfer function
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
US9638672B2 (en) 2015-03-06 2017-05-02 Bongiovi Acoustics Llc System and method for acquiring acoustic information from a resonating body
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
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US9906867B2 (en) 2015-11-16 2018-02-27 Bongiovi Acoustics Llc Surface acoustic transducer
US9906858B2 (en) 2013-10-22 2018-02-27 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
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 (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5254958B2 (ja) 2006-05-17 2013-08-07 アメリカン・ダイ・ソース・インコーポレーテッド 平版印刷版コーティング用新規材料、それを含有する平版印刷版およびコーティング、調製方法ならびに使用
ES2413195B1 (es) * 2010-02-10 2014-05-21 Fco. Javier Porras Vila Altavoz-generador electrico

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055732A (en) * 1974-12-02 1977-10-25 Matsushita Electric Industrial Company Limited Inboard type magnetic system for electro-dynamic transducer
US4392027A (en) * 1978-05-05 1983-07-05 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Method and apparatus for providing a uniform sound distribution in an aircraft cabin
US4506117A (en) * 1981-12-22 1985-03-19 Multiphonie S.A. Electroacoustic transducer
JPS60259100A (ja) * 1984-06-06 1985-12-21 Yoshiro Nakamatsu 隔離独立複数流体支持振動装置
WO1989000798A1 (fr) * 1987-07-13 1989-01-26 Avm Hess, Inc. Transducteur acoustique
WO1992003024A1 (fr) * 1990-08-04 1992-02-20 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Haut-parleur sous forme de panneau

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4055732A (en) * 1974-12-02 1977-10-25 Matsushita Electric Industrial Company Limited Inboard type magnetic system for electro-dynamic transducer
US4392027A (en) * 1978-05-05 1983-07-05 Messerschmitt-Boelkow-Blohm Gesellschaft Mit Beschraenkter Haftung Method and apparatus for providing a uniform sound distribution in an aircraft cabin
US4506117A (en) * 1981-12-22 1985-03-19 Multiphonie S.A. Electroacoustic transducer
JPS60259100A (ja) * 1984-06-06 1985-12-21 Yoshiro Nakamatsu 隔離独立複数流体支持振動装置
WO1989000798A1 (fr) * 1987-07-13 1989-01-26 Avm Hess, Inc. Transducteur acoustique
WO1992003024A1 (fr) * 1990-08-04 1992-02-20 The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland Haut-parleur sous forme de panneau
GB2262861A (en) * 1990-08-04 1993-06-30 Secr Defence Panel-form loudspeaker

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 129 (E - 403) 14 May 1986 (1986-05-14) *

Cited By (54)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6324294B1 (en) 1996-09-03 2001-11-27 New Transducers Limited Passenger vehicles incorporating loudspeakers comprising panel-form acoustic radiating elements
WO1998042536A1 (fr) * 1997-03-22 1998-10-01 New Transducers Limited Vehicules de tourisme equipes de haut-parleurs munis d'elements radiants acoustiques en forme de panneau
WO1998052383A1 (fr) * 1997-05-10 1998-11-19 New Transducers Limited Transducteur de vibrations pour haut-parleur resonant en forme de panneau, et haut-parleur equipe dudit transducteur
US6519347B1 (en) 1997-07-03 2003-02-11 New Transducers Limited Panel-form loudspeakers
WO1999002012A1 (fr) * 1997-07-03 1999-01-14 New Transducers Limited Haut-parleurs en forme de panneaux
WO1999060817A1 (fr) * 1998-05-15 1999-11-25 Harman Audio Electronic Systems Gmbh Dispositif pour exciter de maniere dynamique des haut-parleurs a panneaux
US6411723B1 (en) 1998-06-22 2002-06-25 Slab Technology Limited Loudspeakers
US6304435B1 (en) 1998-11-12 2001-10-16 Acer Incorporated Laptop computer with flat panel speakers
US6925191B2 (en) 1999-07-23 2005-08-02 Digital Sonics Llc Flat panel speaker
US6751334B2 (en) 2000-03-09 2004-06-15 Osseofon Ab Electromagnetic vibrator
WO2001067813A1 (fr) * 2000-03-09 2001-09-13 Osseofon Ab Vibreur electromagnetique
WO2001093633A1 (fr) * 2000-06-02 2001-12-06 P & B Research Ab Vibrateur pour appareils de correction auditive a conduction osseuse
WO2001093634A1 (fr) * 2000-06-02 2001-12-06 P & B Research Ab Vibrateur destine a une prothese auditive a conduction osseuse
US7319771B2 (en) 2000-06-02 2008-01-15 P & B Research Ab Vibrator for bone conducted hearing aids
US7548854B2 (en) 2002-01-31 2009-06-16 Awi Licensing Company Architectural sound enhancement with pre-filtered masking sound
WO2003096744A1 (fr) * 2002-05-10 2003-11-20 Osseofon Ab Elements d'un vibrateur electromagnetique
US7471801B2 (en) 2002-05-10 2008-12-30 Osseofon Ab Device for the generation of or monitoring of vibrations
US7447322B2 (en) 2004-01-13 2008-11-04 Brookstone Purchasing, Inc. Speaker having a transparent panel
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
US10666216B2 (en) 2004-08-10 2020-05-26 Bongiovi Acoustics Llc System and method for digital signal processing
GB2418560A (en) * 2004-09-22 2006-03-29 Citizen Electronics Electro-dynamic exciter
GB2418560B (en) * 2004-09-22 2007-01-10 Citizen Electronics Electro-dynamic exciter
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
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
US9793872B2 (en) 2006-02-07 2017-10-17 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
US10412533B2 (en) 2013-06-12 2019-09-10 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
US9883318B2 (en) 2013-06-12 2018-01-30 Bongiovi Acoustics Llc System and method for stereo field enhancement in two-channel audio systems
US10999695B2 (en) 2013-06-12 2021-05-04 Bongiovi Acoustics Llc System and method for stereo field enhancement in two channel audio systems
US9426549B2 (en) 2013-06-27 2016-08-23 The Boeing Company Flat panel loudspeaker system and method of making
EP2819432A1 (fr) * 2013-06-27 2014-12-31 The Boeing Company Système de haut-parleur à écran plat
US9154862B2 (en) 2013-06-27 2015-10-06 The Boeing Company Flat panel loudspeaker system
US9014413B2 (en) 2013-08-21 2015-04-21 The Boeing Company Dual coil loudspeaker system
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
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
US9615813B2 (en) 2014-04-16 2017-04-11 Bongiovi Acoustics Llc. Device for wide-band auscultation
US9564146B2 (en) 2014-08-01 2017-02-07 Bongiovi Acoustics Llc System and method for digital signal processing in deep diving environment
US9615189B2 (en) 2014-08-08 2017-04-04 Bongiovi Acoustics Llc Artificial ear apparatus and associated methods for generating a head related audio transfer function
US9638672B2 (en) 2015-03-06 2017-05-02 Bongiovi Acoustics Llc System and method for acquiring acoustic information from a resonating body
US9621994B1 (en) 2015-11-16 2017-04-11 Bongiovi Acoustics Llc Surface acoustic transducer
US9998832B2 (en) 2015-11-16 2018-06-12 Bongiovi Acoustics Llc Surface acoustic transducer
US9906867B2 (en) 2015-11-16 2018-02-27 Bongiovi Acoustics Llc Surface acoustic transducer
US11211043B2 (en) 2018-04-11 2021-12-28 Bongiovi Acoustics Llc Audio enhanced hearing protection system
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

Also Published As

Publication number Publication date
CA2229856A1 (fr) 1997-03-13
IL123371A0 (en) 1998-09-24
DE69601734D1 (de) 1999-04-15
EP0847675B1 (fr) 1999-03-10
JPH11512252A (ja) 1999-10-19
NZ316550A (en) 1998-10-28
EA000376B1 (ru) 1999-06-24
PL325284A1 (en) 1998-07-20
CZ57598A3 (cs) 1998-07-15
EP0847675A1 (fr) 1998-06-17
TR199800369T1 (xx) 1998-05-21
DK0847675T3 (da) 1999-09-27
ES2131956T3 (es) 1999-08-01
RO119055B1 (ro) 2004-02-27
AU6880896A (en) 1997-03-27
ATE177583T1 (de) 1999-03-15
AU703061B2 (en) 1999-03-11
DE69601734T2 (de) 1999-09-16
EA199800248A1 (ru) 1998-10-29
CZ57698A3 (cs) 1998-11-11
HK1008639A1 (en) 1999-05-14
HUP9802389A2 (hu) 1999-02-01
SK25698A3 (en) 1998-09-09
IL123371A (en) 2001-07-24
BR9610440A (pt) 1999-02-17

Similar Documents

Publication Publication Date Title
EP0847675B1 (fr) Transducteurs de vibrations
US6151402A (en) Vibration transducers
EP0847676B1 (fr) Transducteurs inertiels de vibrations
AU703198B2 (en) Inertial vibration transducers
US6751333B1 (en) Inertial vibration transducers
EP0847665B1 (fr) Haut-parleurs en forme de panneau
US6192136B1 (en) Inertial vibration transducers
US6031926A (en) Panel-form loudspeakers
US6198831B1 (en) Panel-form loudspeakers
EP0847669B1 (fr) Visuel dote de haut-parleurs
US6188775B1 (en) Panel-form loudspeakers
CA2230702A1 (fr) Haut-parleurs comprenant un element rayonnant acoustique en forme de panneau
WO1997009849A1 (fr) Haut-parleurs dotes d'elements radiants acoustiques en forme de panneau
WO1997009855A2 (fr) Structure incorportant des haut-parleurs
US6327369B1 (en) Loudspeakers comprising panel-form acoustic radiating elements
EP0847666B1 (fr) Haut-parleurs en forme de panneau
US6519349B1 (en) Loudspeaker
US6169809B1 (en) Visual display means incorporating loudspeakers

Legal Events

Date Code Title Description
WWE Wipo information: entry into national phase

Ref document number: 96196625.4

Country of ref document: CN

AK Designated states

Kind code of ref document: A1

Designated state(s): AL AM AT AU AZ BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE HU IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK TJ TM TR TT UA UG US UZ VN AM AZ BY KG KZ MD RU TJ TM

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE LS MW SD SZ UG AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 316550

Country of ref document: NZ

WWE Wipo information: entry into national phase

Ref document number: 1199800111

Country of ref document: VN

WWE Wipo information: entry into national phase

Ref document number: 1019980701144

Country of ref document: KR

ENP Entry into the national phase

Ref document number: 2229856

Country of ref document: CA

Ref document number: 2229856

Country of ref document: CA

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1996929393

Country of ref document: EP

Ref document number: PA/a/1998/001440

Country of ref document: MX

WWE Wipo information: entry into national phase

Ref document number: PV1998-575

Country of ref document: CZ

WWE Wipo information: entry into national phase

Ref document number: 25698

Country of ref document: SK

Ref document number: 98-00632

Country of ref document: RO

ENP Entry into the national phase

Ref document number: 1997 510951

Country of ref document: JP

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1998/00369

Country of ref document: TR

WWE Wipo information: entry into national phase

Ref document number: 199800248

Country of ref document: EA

WWE Wipo information: entry into national phase

Ref document number: 09011831

Country of ref document: US

WWP Wipo information: published in national office

Ref document number: 1996929393

Country of ref document: EP

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: PV1998-575

Country of ref document: CZ

WWG Wipo information: grant in national office

Ref document number: 1996929393

Country of ref document: EP

WWP Wipo information: published in national office

Ref document number: 1019980701144

Country of ref document: KR

WWR Wipo information: refused in national office

Ref document number: PV1998-575

Country of ref document: CZ

WWR Wipo information: refused in national office

Ref document number: 1019980701144

Country of ref document: KR