EP1189481B1 - Casque d'écoute sans radiation - Google Patents

Casque d'écoute sans radiation Download PDF

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Publication number
EP1189481B1
EP1189481B1 EP01122030A EP01122030A EP1189481B1 EP 1189481 B1 EP1189481 B1 EP 1189481B1 EP 01122030 A EP01122030 A EP 01122030A EP 01122030 A EP01122030 A EP 01122030A EP 1189481 B1 EP1189481 B1 EP 1189481B1
Authority
EP
European Patent Office
Prior art keywords
sound
baffle
radiation
perforated
headphones
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
Application number
EP01122030A
Other languages
German (de)
English (en)
Other versions
EP1189481A3 (fr
EP1189481A2 (fr
Inventor
Florian Meinhard König
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.)
Individual
Original Assignee
Individual
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 DE10045177A external-priority patent/DE10045177A1/de
Application filed by Individual filed Critical Individual
Publication of EP1189481A2 publication Critical patent/EP1189481A2/fr
Publication of EP1189481A3 publication Critical patent/EP1189481A3/fr
Application granted granted Critical
Publication of EP1189481B1 publication Critical patent/EP1189481B1/fr
Anticipated expiration legal-status Critical
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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1058—Manufacture or assembly
    • H04R1/1075—Mountings of transducers in earphones or headphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/10—Earpieces; Attachments therefor ; Earphones; Monophonic headphones
    • H04R1/1008—Earpieces of the supra-aural or circum-aural type

Definitions

  • the invention relates to a low-radiation headphones with the ears of a user associated right and left PA housings, each a MU metal have a comprehensive baffle in which dynamic transducers are arranged, wherein the baffle is formed in front of the sound transducers sound permeable and there a to the temples of a user facing radiation dissipation zone, by a greater density of MU metal is provided than in the rest of the sound transmissive Area of baffle.
  • Such a low-radiation headphone is known from DE 197 23 644 A1.
  • This Headphones is u.a. designed to remove electrical and magnetic fields from the head of a Keep away from the headphone user generated by the sound transducers of the headphones and because of the near-head arrangement despite the relatively low Power consumption of a headphone can not be safe.
  • the Sound enclosure of this headphone shielded on all sides.
  • Special value was placed on the shield in the directly to the head of a headphone user adjacent area of the sound enclosure.
  • the baffle of the each PA housing formed as a grid, which is coated with MU metal.
  • a Provide radiation dissipation zone in the form of a MU metal web the pointed has tapered shape.
  • This tapered MU metal bar extends starting from the edge of a coaxial transducer system, points with its tip to the center this system and runs from its top backwards upwards obliquely upward directed to electrical and magnetic radiation in this direction from the temple of the Deduce headphone user.
  • the MU bridge is on the top of the with MU metal provided coated lattice-shaped baffle and forms one of this wall separate element, so requires separate installation measures.
  • the tapered The shape of the bridge is chosen to be, as it is sound impermeable Sound emission behavior of the coaxial transducer system as little as possible disturbing why this bridge the sitting in the center of the low midrange transducer As far as possible covers the high-frequency sound transducer.
  • the MU metal bridge is larger with Material thickness formed as the coating of the lattice-shaped baffle to a to provide optimal radiation dissipation function.
  • This known headphone fulfills its radiation dissipation function in the field of Baffle of the headphones reliable, but requires a complex production.
  • An object of the present invention is to provide a low radiation headphone of the type mentioned above, the guarantee optimal Radiation shield in the region of its baffles can be produced inexpensively.
  • the invention provides, the Total baffle made of MU sheet to form in the field of sound transducers perforated and otherwise formed solid or integrated in this, wherein the Radiation dissipation zone in the perforated area of the MU-sheet integral with this is formed.
  • the inventive design of the baffle has the advantage that they provides an even better radiation shield outside the perforated area as a MU metal coated lattice structure.
  • the one-piece training of Baffle with the radiation dissipation zone has the advantage of a significant simplified manufacturing technology compared to the previous explained low-radiation headphones.
  • the through perforation of the MU sheet in the field of sound converter exclusively there provided network structure may be thickened to provide the radiation dissipation zone be educated.
  • this thickened region is preferably a perforation-free part the otherwise perforated portion of the baffle forming MU sheet.
  • the radiation extraction zone is independent of its specific design, as such known, with a tapered barrel formed so that they are at the edge of the center of the perforated area widest and narrowest in the center of this area.
  • the contour of the radiation-dissipating zone is generally V-shaped Course.
  • This radiation dissipation zone in the form of a to the center of the perforated area tapered web is according to an advantageous embodiment of Invention extended beyond the perforated area thickened formed up to opposite peripheral edge of the baffle forming MU-sheet.
  • This a relatively long, tapered bridge provides an optimized radiation dissipation in the Compared to the relatively short radiation dissipation zone extending from the center to the Edge of the perforated portion of the baffle forming MU-sheet extends, such as explained above.
  • a typical example of such a headphone is a Ear-sensitive (small) headphones.
  • an ear-encasing earphone that For example, may be formed as a headset with Vorneortung, for what purpose the preferably coaxial transducer assembly acentric in the disc-shaped Baffle is arranged, i. forward and down in sight of the Headphone user seen from a fictitious central location in the baffle shifted.
  • the Koaxialschallwandleran extract partially covering area of the Baffle-forming MU sheet comes here to provide optimal Vome-Ortonia to lie in the rear region of the respective headphone baffle, based on a usage position of the headphone.
  • the solid circular sector of the baffle forming MU-sheet is a Semicircular sector with a straight edge along its diameter.
  • This Semicircular sector can also be beyond its straight edge, transverse to this have a forward extended massive MU plate area.
  • the Radiation dissipation zone is characterized by the massive circular sector of the baffle provided with forming MU sheet.
  • this area can still do so be structured so that a back upwardly extending web part additionally thickened is formed, as in the ear-enclosing headphones explained above.
  • the baffle of the left public address housing of a low-radiation Headphone in plan view shown schematically and designated by the reference numeral 10.
  • this headphone is an over-the-ear Small headphones, whose baffle construction in favor of a vorortortiana of by Sound transducer of the headphone radiated sound events is formed.
  • the invention consists of the baffle 10 in one piece from a circular disk-shaped MU sheet with zones of different surface density. The different area density of The purpose of the respective zones is to provide the user's head with optimum sound on the baffle side electrical and magnetic radiation to be protected by the sound transducer system is generated in each sound enclosure when these sound transducers with a Audiosignal be applied without the desired Schallabstrahl characterizing affect.
  • the sound transducer of the overhead earphone is as Coaxial transducer assembly made with a low-midrange with circular Outline and arranged in the center of the same tweeter also with circular outline.
  • baffle 10 The location of this Koaxialschallwandleran whatsoever under the in Fig. 1 shown baffle 10 is schematically with different blackened areas shown.
  • the low-midrange system comes under the reference numeral 11th designated area, while the Hochtonschallwandlersystem in the center 12 of area 11 comes to rest.
  • the baffle 10 is in one piece from a circular disk-shaped MU sheet, the zones of different surface density having.
  • An outer annular zone 13 is through the Circular disk outer edge of the baffle 10 and by the circle outer edge of the area 11, below which the low-midrange transducers come to rest.
  • a circle segment of the region 11 is characterized by greater material thickness than the Circular ring area 13.
  • This reinforced MU material area is defined by the Circular outer edge of the region 11 and a straight boundary line 14, the radial over the entire Surface of the baffle 10 extends and the zones of reinforced material in Forward direction (arrow direction) limited.
  • the boundary line which is shown in Fig. 1 as a lot, also by the angle ⁇ tilted, as shown in dotted lines in Fig. 1 and the reference numeral 14 ' designated.
  • the perforated zone or the perforated area 15 serves for targeted sound radiation from the Koaxialschallwandleranssen towards the front or to the front with a Downward-facing component to promote the vorortorthus of this Arrangement generated sound events and this perforated area 15 extends both over the front high and the low midrange of the Transducer array.
  • the thickened zone embodies in the rear Part of the area 12, which is also probably on the Hochtonschallwandler like the Subwoofer of the transducer assembly extends a radiation dissipation zone for electrical and magnetic generated by the transducer assembly in operation Radiation. In particular, this is a derivative of the radiation from the Tone range of a headphone user achieved.
  • the front perforated region 15 is acoustically transparent and exclusively blocking with respect to generated by the transducer assembly electrical and magnetic radiation.
  • Fig. 2 shows a modification of the embodiment of the baffle of Fig. 1, wherein the same parts of this wall are designated by the same reference numerals.
  • a difference in the embodiment of Fig. 2 to that of Fig. 1 is that the Borderline 14 and its variant 14 'within the zones 11 and 13 angled to from runs and thus defines a perforated region 15, the upward and backward is bounded by the rectangular course of the boundary line, whereby on the other hand the reinforced part of the area 11 (and 12) in the rear part of the baffle in Direction is extended from, as in the upper part of Fig. 2 by the reference numeral sixteenth shown.
  • Fig. 3 is a circumaural variant of the low-radiation, circumaural headphone in the area of one of its baffles.
  • These Baffle 10 "partially also covers a coaxial Schallwandleran Ich whose Outer contour is designated by the reference numeral 17.
  • the baffle exists in one piece from a nikommenförmgien MU sheet, above the Koaxialschallwandleran Mr.
  • These breakthroughs are different in size and one of the major breakthroughs is schematically denoted by the reference numeral 18, during one of the small openings is designated schematically by the reference numeral 19.
  • the large breakthroughs 18 are on an outer circle of large diameter, while the smaller openings 19 on two lying inside circles, which run concentrically to the outer circle.
  • the entire baffle is massively formed from MU-sheet metal.
  • the radiation dissipation zone is not perforated 20 formed, starting from the Schallwandlerkontur 19, the perforated area 18, 19 encloses inwardly tapered to the center of the perforated area.
  • the perforation-free area 20 with reinforced MU material thickness formed and, not least for manufacturing reasons, this thickened Area in the radial direction extended to the opposite circle edge of the Baffle 10 ", as indicated by the reference numeral 21. Due to the oblique course of the Area 20 and its extension area 21 will be optimal Radiation dissipation zone provided to the temple area of a headphone user optimally shielding from electrical magnetic radiation, which has its output in the Coaxial Schallwandleranssen, which comes to rest under the baffle 10 ".

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)

Claims (8)

  1. Casque d'écoute à faible rayonnement comprenant des boítiers de sonorisation droit et gauche associés aux oreilles d'un utilisateur, qui comprennent respectivement une enceinte acoustique (10) comprenant du mumétal (métal - MU), dans laquelle des transducteurs acoustiques dynamiques sont disposés, l'enceinte acoustique (10) étant formée devant les transducteurs acoustiques de manière à transmettre le son et comprend à cet endroit une zone de dérivation de rayonnement (partie de 11, 12, 20) dirigée vers les tempes de l'utilisateur, qui est obtenue par une épaisseur plus grande de mumétal que dans la zone de transmission acoustique restante de l'enceinte acoustique (10), caractérisé en ce que l'enceinte acoustique (10) est constituée dans son ensemble de tôle-MU, est perforé dans la zone (17) du transducteur acoustique et est autrement réalisée de manière massive et la zone de dérivation de rayonnement (20) est réalisée de manière monobloc dans la zone perforée de la tôle-MU.
  2. Casque d'écoute selon la revendication 1, caractérisé en ce que la zone de dérivation de rayonnement (partie de 11, 12, 20) est une partie exempte de perforation de la zone autrement perforée de la tôle-MU formant l'enceinte acoustique (10").
  3. Casque d'écoute selon la revendication 1 ou 2, comprenant en particulier un dispositif de transduction acoustique coaxiale disposée de manière excentrée par rapport au centre d'une enceinte acoustique (10") en forme de disque, le dispositif de transduction étant apte à localiser vers l'avant une émission acoustique qu'il a produite, particulièrement pour des casques d'écoute entourant l'oreille, caractérisé en ce que la zone de dérivation de rayonnement (20) se présente sous la forme d'une barrette, qui s'étend radialement à partir du centre de la zone perforée (17), laquelle s'étend de manière concentrique au dispositif de transduction acoustique, vers le bord de cette zone perforée.
  4. Casque d'écoute selon la revendication 1, 2 ou 3, caractérisé en ce que la zone de dérivation de rayonnement (20) se rétrécit à partir du bord vers le centre de la zone perforée.
  5. Casque d'écoute selon la revendication 3 ou 4, caractérisé en ce que la zone de dérivation de rayonnement (20) se prolonge sous la forme d'une barrette (21) au-delà de la zone perforée jusqu'au bord périphérique opposé de la tôle MU formant l'enceinte acoustique.
  6. Casque d'écoute selon l'une des revendications 1 à 5, comprenant en particulier un dispositif de transduction acoustique coaxiale concentrique à une enceinte acoustique en forme de disque (10) pour localiser vers l'avant une émission acoustique qu'il a produite, plus particulièrement pour (petits) casques d'écoute reposant sur l'oreille, caractérisé en ce qu'il est formé un secteur de cercle situé sur le dispositif de transduction acoustique de la tôle-MU, ledit secteur de cercle étant un secteur de cercle de la tôle-MU formant l'enceinte acoustique, s'étendant à partir de son bord de cercle jusqu'aux bords radiaux, également au niveau du dispositif de transduction acoustique, en recouvrant partiellement celui-ci, en étant massif respectivement non perforé, et contenant la zone de dérivation de rayonnement (partie de 11, 12), et en ce que le restant de l'enceinte acoustique (10) est perforé au niveau du dispositif de transduction acoustique.
  7. Casque d'écoute selon la revendication 6, caractérisé en ce que le secteur de cercle est un secteur de demi-cercle avec un bord s'étendant de manière rectiligne le long de son diamètre.
  8. Casque d'écoute selon la revendication 7, caractérisé en ce que le secteur de demi-cercle comprend des zones de tôle-MU massives qui se prolongent transversalement par rapport et au-delà de son bord s'étendant de manière rectiligne.
EP01122030A 2000-09-13 2001-09-13 Casque d'écoute sans radiation Expired - Lifetime EP1189481B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10045177A DE10045177A1 (de) 2000-06-05 2000-09-13 Strahlungsarmer Kopfhörer
DE10045177 2000-09-13

Publications (3)

Publication Number Publication Date
EP1189481A2 EP1189481A2 (fr) 2002-03-20
EP1189481A3 EP1189481A3 (fr) 2003-11-05
EP1189481B1 true EP1189481B1 (fr) 2005-06-08

Family

ID=7655989

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01122030A Expired - Lifetime EP1189481B1 (fr) 2000-09-13 2001-09-13 Casque d'écoute sans radiation

Country Status (3)

Country Link
US (1) US6554097B2 (fr)
EP (1) EP1189481B1 (fr)
AT (1) ATE297648T1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6666295B2 (en) * 2001-01-23 2003-12-23 Etymotic Research, Inc. Acoustic resistor for hearing improvement and audiometric applications, and method of making same
US20090295253A1 (en) * 2006-06-26 2009-12-03 Battelle Energy Alliance, Llc Motor/generator
US20090295520A1 (en) * 2006-06-26 2009-12-03 Battelle Energy Alliance, Llc Magnetic structure
US20100013345A1 (en) * 2006-06-26 2010-01-21 Battelle Energy Alliance, Llc Bi-metal coil
US7688036B2 (en) * 2006-06-26 2010-03-30 Battelle Energy Alliance, Llc System and method for storing energy
US8005250B2 (en) * 2007-12-21 2011-08-23 Josephson Engineering, Inc. Microphone housing
US9538272B2 (en) * 2014-09-08 2017-01-03 Apple Inc. Acoustic mesh and methods of use for electronic devices

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4058688A (en) * 1975-05-27 1977-11-15 Matsushita Electric Industrial Co., Ltd. Headphone
AT355646B (de) * 1977-02-02 1980-03-10 Akg Akustische Kino Geraete Kopfhoerer zum verbesserten raeumlichen hoeren
DE2836937B2 (de) * 1977-08-31 1981-06-25 AKG Akustische u. Kino-Geräte GmbH, Wien Kopfhörer
US6301367B1 (en) * 1995-03-08 2001-10-09 Interval Research Corporation Wearable audio system with acoustic modules
US5694475A (en) * 1995-09-19 1997-12-02 Interval Research Corporation Acoustically transparent earphones
JP2002515197A (ja) * 1995-09-19 2002-05-21 インターバル リサーチ コーポレイション めがね取り付け具付イヤホン
DE19609791C1 (de) * 1996-03-13 1997-07-17 Deutsche Telephonwerk Kabel Gehäuse für ein Kommunikations-Endgerät
DE19723644A1 (de) * 1997-06-05 1998-12-10 Florian Meinhard Koenig Strahlungsarmer Kopfhörer
US6373942B1 (en) * 2000-04-07 2002-04-16 Paul M. Braund Hands-free communication device

Also Published As

Publication number Publication date
ATE297648T1 (de) 2005-06-15
US20020066617A1 (en) 2002-06-06
EP1189481A3 (fr) 2003-11-05
EP1189481A2 (fr) 2002-03-20
US6554097B2 (en) 2003-04-29

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