EP1322137A2 - Tragbares Lautsprechersystem und Verwendungen davon - Google Patents

Tragbares Lautsprechersystem und Verwendungen davon Download PDF

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Publication number
EP1322137A2
EP1322137A2 EP02257673A EP02257673A EP1322137A2 EP 1322137 A2 EP1322137 A2 EP 1322137A2 EP 02257673 A EP02257673 A EP 02257673A EP 02257673 A EP02257673 A EP 02257673A EP 1322137 A2 EP1322137 A2 EP 1322137A2
Authority
EP
European Patent Office
Prior art keywords
capsule
portable
speaker system
exciter
mobile telephone
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.)
Withdrawn
Application number
EP02257673A
Other languages
English (en)
French (fr)
Other versions
EP1322137A3 (de
Inventor
Charles Richard Colin Parmley
Steven David John Jupp
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.)
Hosiden Besson Ltd
Original Assignee
Hosiden Besson Ltd
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
Priority claimed from GB0126603A external-priority patent/GB0126603D0/en
Priority claimed from GB0126602A external-priority patent/GB0126602D0/en
Priority claimed from GB0126601A external-priority patent/GB0126601D0/en
Application filed by Hosiden Besson Ltd filed Critical Hosiden Besson Ltd
Publication of EP1322137A2 publication Critical patent/EP1322137A2/de
Publication of EP1322137A3 publication Critical patent/EP1322137A3/de
Withdrawn legal-status Critical Current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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers

Definitions

  • This invention relates to mobile telephone kits and in particular speaker systems suitable for use with hands-free mobile telephone kits and to exciter capsules suitable for use in such speaker systems.
  • Existing hands-free kits commonly comprise electronic equipment for amplifying the speaker output and enhancing the microphone of a telephone so that the user can comfortably listen and speak at some distance from the telephone.
  • these hands free devices tend to require to be plugged into a port on the mobile telephone as well as connected to power supply. Since a variety of ports are used by different manufacturers of telephones, the kits need to be specific for a particular make or model of telephone and may need to be changed or upgraded when the telephone is replaced by the user.
  • kits require the installation of a speaker system into the car. These may be in the form of a panel form speaker hidden in a door panel or more simply a diaphragm speaker mounted within the car. In either case, the kit becomes integral with the car and is difficult to install and/or remove should the user wish to use his kit and telephone in a different car.
  • the invention aims to provide a portable speaker system which is lightweight and adaptable for use in various environments.
  • the invention provides an exciter capsule electrically connectable to an audio output of a portable electrical device and means for attaching the exciter capsule to any resonant surface.
  • the invention provides a portable speaker system comprising an exciter capsule electrically connectable to an audio output of a portable electrical device, the exciter capsule being mounted on a lightweight resonant surface, the surface and capsule being contained in a lightweight, acoustically transmitting housing.
  • an aim of the present invention is to provide a hands-free mobile telephone kit which is adaptable for use with a variety of mobile telephone makes and/or models and which can easily be transported and installed to allow hands free use in the user's environment.
  • the environment may be the user's car, his office, his home, a hotel room or any other temporary location.
  • the present invention provides a hands-free mobile telephone kit comprising;
  • the invention provides an exciter capsule electrically connectable to an audio output of a mobile telephone and means for attaching the exciter capsule to any resonant surface.
  • the exciter capsule in accordance with the invention basically comprises an electromechanical transducer protected by a housing.
  • the housing may conveniently be of a durable plastics material.
  • the capsule may be adapted for attachment to a resonant surface by any suitable means including but not limited to peelable adhesive, clips, bayonets, screws, velcro, magnetism, suction etc. depending on the nature of the resonant surface to which it may be attached.
  • the perimeter of the housing is used to fix the capsule to the resonant surface, permitting the transducer to excite the surface without obstruction.
  • electromechanical transducer Any known type of electromechanical transducer may be incorporated including but not limited to, electromagnetic, dynamic or bender transducers and/or piezo-ceramic transducers.
  • the speaker system may be electrically connectable with any form of portable audio equipment including but not limited to, mobile telephones, MP3 players, games consoles, palm or lap-top computers, portable radios, CD, DVD, audio cassette or MC players, microphones and the like.
  • the resonant surface may be provided in the form of a diaphragm type speaker.
  • the resonant surface may be a flat panel of the type described in WO/09842.
  • the resonant surface is simply any surface in the local vicinity of the user. Such surfaces, for the purposes of the invention do not need to have all the properties of the flat panels described in WO/09842.
  • the inventors have found that an acceptable standard of audio quality can be obtained using existing electro-mechanical transducers suitably encapsulated and mounted on this wide range of resonant surfaces.
  • the portable speaker system of the invention may conveniently be used as a portable hands-free kit for a mobile telephone. It has been found that most modern telephones incorporate a microphone which is sufficiently sensitive to pick up a user's voice at some distance from the mouth piece, accordingly amplification of the received signal only is needed for hands free use.
  • an electro magnetic transducer or exciter 8 is housed in a small rounded plastic moulding 12.
  • the lower surface of the housing 12 is open adjacent the vibrating portion of the transducer and is provided with a coupling ring 13 about its periphery.
  • the coupling ring 13 may be mounted on any convenient resonating surface 14.
  • Figure 1 (a) illustrates a cross section through the housing 12.
  • Figure1 (b) shows the open bottom end of the housing.
  • Figure 1 (c) shows a cross section of the housing carrying the electro-mechanical transducer 8.
  • the housing 12 is dome shaped with a circular, open bottom surface though the housing may be any desired shape and may have a closed bottom surface.
  • a first peripheral lip15 Inside the housing 12 approximately one third of the distance from the bottom to the peak of the dome is a first peripheral lip15 to which is mounted the upper portion of the transducer 8.
  • the vibrating or exciting portion 16 of the transducer 8 protrudes slightly from the opening at the bottom of the housing 12.
  • a second peripheral lip 17 providing a surface for the attachment of a coupling or sealing ring for mounting the device to a resonant surface.
  • Figure 2 shows an electromechanical transducer of the rocking armature type in exploded form ( Figure 2(a)) and in assembled view ( Figure 2(b))
  • the transducer comprises a connector rod 41 connecting anti-parallel rails 42 with rocking armature 43.
  • Bobbins 44 and yoke 46 house a permanent magnet 45 and are fixed in position by screws 47.
  • the rocking armature device may for example be of the type manufactured by Hosiden Besson Ltd and already in use in receivers, microphones and sound transducer capsules for telecommunications at the date of filing of this application.
  • the embodiment illustrated in Figure 3 contains a transducer 38 of similar configuration to that illustrated in Figure 1.
  • the transducer is encased in a housing 312 which includes a bottom plate 300 to which the exciter portion 316 is attached.
  • the bottom plate will comprise a material capable of conducting a pressure wave generated by the exciter portion 316 to a resonant surface.
  • a transducer comprises a magnet assembly 41 and a voice coil ring 42 carried in a robust, lightweight plastic housing 43.
  • the housing 43 has a top surface 43a which incorporates small apertures, and a base 43b with a larger, central aperture 44.
  • the base may be attached to any resonant surface to provide amplification of sound vibrations transmitted by the transducer.
  • the magnet assembly 41 is suspended in the housing 43 with a small clearance around it's perimeter and to it's front surface 41a to allow free vibration within the capsule 43.
  • the voice coil ring 42 is enlarged and housing 43 is secured thereto, such that the housing moves in sympathy with the voice coil ring 42.
  • the magnet assembly 41 moves to provide a reactional force within the housing 43 which in turn vibrates the resonant surface (not shown) to which the capsule is attached.
  • the material for the housing 43 is selected to be lightweight, yet robust so as to minimise weight whilst still providing protection against damage to the transducer.
  • the capsule comprises a thermosetting plastics material.
  • the venting in the top surface 41a of the housing 41 is vented to provide good airflow within the capsule and thereby minimise resistance against motion of the assembly.
  • the voice coil ring 42 may be made of a rigid or flexible material. A flexible ring may minimise the effective area of the drive point of the capsule.
  • Connector wires may be secured to the inner surface of the voice coil ring 42 and passed through the aperture 44 in the base for connection to an electrical audio apparatus (not shown).
  • Figure 5 shows an arrangement which is similar to that of Figure 4.
  • the arrangement differs from that of Figure 4 in that the magnetic assembly 51 is suspended from the inside of the housing 53 by a ring of cloth 55.
  • This arrangement provides improved resilience of the exciter capsule to shear forces which are transferred away from the voice coil ring 52 and directly toward the magnetic assembly 51 and cloth suspension 55, thereby reducing long-term damage to the transducer.
  • the internal arrangement of the transducer within the housing 63 is broadly similar to that described in respect to Figures 4 and 5.
  • the arrangement is distinguished primarily by the design of the housing which has a top face 63a of substantially cruciform shape having four substantially triangular spaces to permit good air flow through the capsule.
  • Protrusions 66 extend from the bottom surface of the cruciform to maintain the magnetic assembly 61 in a suspended position away from the sides of the housing 63.
  • the base of the housing 63b is provided with an electrical connector tab 67 with connectors 67a and 67b to which electrical wiring (not shown) can be attached.
  • the voice coil ring 62 is seated in supporting structure 68 provided around the periphery of the aperture 64 in the base 63b.
  • a portable speaker system comprises an exciter capsule 1 mounted on the underside of a resonant surface 2 which is carried by a lightweight housing 3.
  • a cable 4 electrically connects the capsule with a portable electrical device such as mobile telephone 5.
  • a jack 6 fits a socket 7 in the telephone 5 and thereby taps electrical power from the battery of the telephone 5 to power the capsule 1.
  • the socket 7 is a standard feature of most modern mobile telephones and has hitherto before been used for connecting earphones to the audio output of the telephone.
  • the speaker device may equally be configured to provide audio output of data transmitted via the internet.
  • Figure 8 shows a mobile telephone 1 having an earpiece 2 and microphone 3. Mounted on the ear piece 2 is a microphone 4. An acoustic sealing ring 5 surrounds the microphone 4 and connects via electrical means to control box 6. The control box 6 is powered via a cigar lighter plug 7 suitable for insertion in the cigar lighter of the user's vehicle.
  • a speaker unit comprising an electro-mechanical transducer or exciter 8 housed in a housing 9.
  • the housing has a gasket 10 into which is mounted a panel form speaker of the type described in WO/09842.
  • the mobile telephone 1 In use, the mobile telephone 1 is laid down or mounted in a holder in the user's vehicle and cigar lighter plug 7 inserted into the vehicle cigar lighter.
  • the user speaks via the microphone 3, which is sufficiently sensitive to detect his voice at a distance of a metre or so.
  • the reply from the other party to the conversation is received through the ear piece 2 and picked up by microphone 4.
  • the reply is electrically transmitted to the control box and then to the exciter 8.
  • the exciter 8 vibrates and causes vibration in the panel form speaker 11 whereby the voice of the other party can be heard by the user.
  • Figure 9 shows an arrangement similar to that in Figure 8, incorporating the mobile telephone 1 with earpiece 2 and microphone 3.
  • a microphone 4 acoustically couples the earpiece 2 of the mobile telephone 1 then electrically to the control box 6, powered via cigar lighter plug 7.
  • an electro mechanical transducer or exciter 8 is coupled to the control box.
  • the exciter is housed in a small rounded plastic moulding 12 more clearly shown in Figure 4.
  • the lower surface of the housing 12 is open adjacent the vibrating portion of the transducer and is provided with a coupling ring 13 about its periphery.
  • the coupling ring may be mounted on any convenient resonating surface 14.
  • FIG. 10 shows a mobile telephone to which is acoustically coupled a kit according to the invention.
  • the telephone generally designated as 301, has a microphone receiver 302 at one end and a speaker 303 at the opposing end, an acoustic coupler 304 comprise a flat, hollow, dome-shaped portion 304a which is carried on a resilient clip 304b.
  • the under surface of the dome-shaped portion 304a and the opposing surface of the clip 304b are provided with a soft, porous fabric covering 306a, 306b to prevent damage to the telephone surface.
  • the fabric preferably also has non-slip properties. It is to be understood that dimensions shown in the figures are merely for guidance and are not essential to the invention. Other embodiments will no doubt occur to the skilled addressee without departing from the true scope of the invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Telephone Set Structure (AREA)
EP02257673A 2001-11-06 2002-11-06 Tragbares Lautsprechersystem und Verwendungen davon Withdrawn EP1322137A3 (de)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
GB0126603A GB0126603D0 (en) 2001-11-06 2001-11-06 Portable speaker systems
GB0126602 2001-11-06
GB0126602A GB0126602D0 (en) 2001-11-06 2001-11-06 Portable speaker systems
GB0126601 2001-11-06
GB0126601A GB0126601D0 (en) 2001-11-06 2001-11-06 Portable mobile phone audio kit
GB0126603 2001-11-06

Publications (2)

Publication Number Publication Date
EP1322137A2 true EP1322137A2 (de) 2003-06-25
EP1322137A3 EP1322137A3 (de) 2008-08-27

Family

ID=27256315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02257673A Withdrawn EP1322137A3 (de) 2001-11-06 2002-11-06 Tragbares Lautsprechersystem und Verwendungen davon

Country Status (1)

Country Link
EP (1) EP1322137A3 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053355A2 (en) * 2003-10-30 2005-06-09 New Transducers Limited Carry case
EP1892995A2 (de) * 2006-08-23 2008-02-27 puren GmbH Flächenlautsprechervorrichtung
WO2010007335A1 (en) * 2008-07-17 2010-01-21 New Transducers Limited Inertial vibration exciter
EP2611209A1 (de) * 2011-12-27 2013-07-03 Chief Land Electronic Co. Ltd. Sicherungsvorrichtung für einen Vibrationslautsprecher
CN104967929A (zh) * 2015-06-30 2015-10-07 尚平 一种共振音响
CN105187979A (zh) * 2015-09-16 2015-12-23 尚平 一种共振音箱
EP3096536A1 (de) * 2013-06-27 2016-11-23 The Boeing Company Flachpaneel-lautsprechersystem
WO2023208258A1 (zh) * 2022-04-28 2023-11-02 深圳市云动创想科技有限公司 扬声器、共振音响、共振音响的控制方法以及教学板

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926486A (en) * 1987-07-17 1990-05-15 Barsumian Bruce R Transducer assembly for automatic message system
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter
WO2000036875A2 (en) * 1998-12-15 2000-06-22 Wharfedale International Limited Loudspeaker

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4926486A (en) * 1987-07-17 1990-05-15 Barsumian Bruce R Transducer assembly for automatic message system
WO1997009842A2 (en) * 1995-09-02 1997-03-13 New Transducers Limited Acoustic device
WO1998034320A2 (en) * 1997-01-31 1998-08-06 New Transducers Limited Electro-dynamic inertial vibration exciter
WO2000036875A2 (en) * 1998-12-15 2000-06-22 Wharfedale International Limited Loudspeaker

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005053355A2 (en) * 2003-10-30 2005-06-09 New Transducers Limited Carry case
WO2005053355A3 (en) * 2003-10-30 2005-09-29 New Transducers Ltd Carry case
EP1892995A2 (de) * 2006-08-23 2008-02-27 puren GmbH Flächenlautsprechervorrichtung
EP1892995A3 (de) * 2006-08-23 2010-03-03 puren GmbH Flächenlautsprechervorrichtung
WO2010007335A1 (en) * 2008-07-17 2010-01-21 New Transducers Limited Inertial vibration exciter
US8494208B2 (en) 2008-07-17 2013-07-23 New Transducers Limited Inertial vibration exciter
EP2611209A1 (de) * 2011-12-27 2013-07-03 Chief Land Electronic Co. Ltd. Sicherungsvorrichtung für einen Vibrationslautsprecher
EP3096536A1 (de) * 2013-06-27 2016-11-23 The Boeing Company Flachpaneel-lautsprechersystem
CN104967929A (zh) * 2015-06-30 2015-10-07 尚平 一种共振音响
CN105187979A (zh) * 2015-09-16 2015-12-23 尚平 一种共振音箱
WO2023208258A1 (zh) * 2022-04-28 2023-11-02 深圳市云动创想科技有限公司 扬声器、共振音响、共振音响的控制方法以及教学板

Also Published As

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