EP1189481A2 - Casque d'écoute sans radiation - Google Patents

Casque d'écoute sans radiation Download PDF

Info

Publication number
EP1189481A2
EP1189481A2 EP01122030A EP01122030A EP1189481A2 EP 1189481 A2 EP1189481 A2 EP 1189481A2 EP 01122030 A EP01122030 A EP 01122030A EP 01122030 A EP01122030 A EP 01122030A EP 1189481 A2 EP1189481 A2 EP 1189481A2
Authority
EP
European Patent Office
Prior art keywords
baffle
sound
area
radiation
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.)
Granted
Application number
EP01122030A
Other languages
German (de)
English (en)
Other versions
EP1189481B1 (fr
EP1189481A3 (fr
Inventor
Florian Meinhard Konig
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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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 low-radiation headphones with a user's ears assigned right and left PA housing, each a MU metal have extensive baffle in which dynamic sound transducers are arranged, the baffle in front of the transducers is formed permeable to sound and there one has a radiation dissipation zone facing the temples of a user, which by a greater density of MU metal is provided than in the rest of the sound permeable Baffle area.
  • Such low-radiation headphones are known from DE 197 23 644 A1.
  • This Headphones include designed to separate electrical and magnetic fields from a head Keep headphone users away, generated by the transducers of the headphones be and due to the arrangement close to the head despite the relatively small Power consumption of a headphone can not be harmless.
  • typically generates headphones with sound transducers in the form of electrostatics in electrical fields on the order of a few hundred volts per meter. In essence, they are Sound enclosure of this headphone shielded on all sides. Special value was placed on the shield in the directly on the head of a headphone user adjacent area of the sound enclosure.
  • the baffle of the respective sound housing formed as a grid, which is coated with MU metal.
  • one Radiation dissipation zone in the form of an MU metal web to provide the pointed has a tapering shape.
  • This tapered MU metal bar extends outwards from the edge of a coaxial sound transducer system, points with its tip to the center this system and runs obliquely upwards from its top to the top directed to electrical and magnetic radiation in this direction from the temple of the Headphone user.
  • the MU bridge is on the top with MU metal coated grid-shaped baffle provided and forms one of this wall separate element, so requires special assembly measures.
  • the tapered The shape of the bridge is chosen to be, since it is soundproof Sound radiation behavior of the coaxial sound transducer system as little as possible disturb, why this bridge that sits in the center of the low-mid-range transducer Tweeter covers as little as possible.
  • the MU metal bar is larger Material thickness formed as the coating of the lattice-shaped baffle to a provide optimal radiation dissipation function.
  • This well-known headphone fulfills its radiation dissipation function in the field of Baffle of the headphones is reliable, but requires a complex production.
  • An object of the present invention is a low-radiation headphone to create the type mentioned at the outset, while ensuring optimal Radiation shielding in the area of its baffles can be produced inexpensively.
  • the baffle of each PA housing from one to create grid structure coated with MU metal and the radiation dissipation zone To attach it in the form of a web is provided according to the invention, the Baffle to be made entirely of MU sheet metal in the area of the transducers perforated and otherwise solidly formed or integrated in it, the Radiation dissipation zone in the perforated area of the MU sheet integrally with it is formed.
  • the inventive design of the baffle has the advantage that it provides even better radiation shielding outside the perforated area as a lattice structure coated with MU metal.
  • the one-piece training of the Baffle with the radiation dissipation zone has the advantage of one essential simplified manufacturing technology compared to the previous one explained above low-radiation headphones.
  • the network structure provided can be thickened to provide the radiation dissipation zone be trained.
  • this thickened area is preferably a perforation-free part the otherwise perforated area of the baffle forming the baffle.
  • the radiation dissipation zone is independent of its special training, as such known, formed with a tapered barrel so that they are at the edge of the center of the perforated area is widest and narrowest in the center of this area.
  • the In other words, the contour of the radiation dissipation zone is therefore generally V-shaped Course.
  • This radiation dissipation zone in the form of a to the center of the perforated area of the tapered web is according to an advantageous development Invention extended beyond the perforated area formed thickened to opposite peripheral edge of the MU sheet forming the baffle.
  • This Relatively long, tapered web provides optimized radiation dissipation in the Compared to the relatively short radiation zone, which is from the center to the Edge of the perforated area of the baffle forming the MU sheet, such as explained above.
  • a typical example of such headphones is a ear-tight (small) headphones.
  • a headphone that surrounds the ear
  • the not perforated area of the coaxial transducer arrangement partially covering the The baffle that forms the MU sheet is used to provide optimal front location to lie in the rear area of the respective headphone baffle, based on a use position of the headphones.
  • the solid circular sector of the MU sheet forming the baffle is preferred Semicircular sector with a straight edge along its diameter. This Semicircular sector can also go beyond its straight edge, across it have a massive MU sheet metal area extended towards the front.
  • the Radiation dissipation zone is the massive circular sector of the baffle forming MU sheet provided. In addition, this area can go further be structured so that a web part that runs upwards towards the rear is additionally thickened is formed, as in the ear-enclosing headphones explained above.
  • the baffle of the left sound box is a low radiation Headphones shown schematically in plan view and designated by the reference number 10.
  • These headphones are preferably on-ear Small headphones, the baffle structure in favor of a pre-location by the Sound transducer of the headphones emitted sound events is formed.
  • the baffle structure in favor of a pre-location by the Sound transducer of the headphones emitted 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 areal density of the The respective zones serve to optimally pre-position the head of a user on the baffle side to protect electrical and magnetic radiation caused by the transducer system is generated in every sound reinforcement housing if this sound transducer with a Audio signal can be applied without the desired sound emission characteristics affect.
  • the on-ear headphone's transducer is as Coaxial transducer assembly formed with a circular mid-woofer Outline and a tweeter arranged in the center of the same also with circular outline.
  • the location of this coaxial transducer arrangement under that in Fig. 1st baffle 10 is shown schematically with differently blackened areas shown.
  • the bass-midrange system comes under the number 11 designated area, while the tweeter system in the center 12th 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 through the circular outer edge of the area 11 defined below which the low-mid-range transducer comes to rest.
  • a circle segment of area 11 is characterized by a greater material thickness than that Circular ring area 13.
  • This reinforced MU material area is defined by the Circular outer edge of the area 11 and a straight boundary line 14, which radially over the entire Surface of the baffle 10 runs and the zones of reinforced material in Forward direction (arrow direction) limited.
  • border line 14 On the other side of border line 14 there is a perforated zone 15, which also has circular sector shape and delimits is on the by the boundary line 14 and on the other hand by the outer edge of the area 11 1 right side of the boundary line 14.
  • the boundary line which is shown in FIG. 1 as a plumb line, can also be around the angle ⁇ run tilted, as shown in dotted lines in FIG. 1 and with the reference number 14 ' designated.
  • the perforated zone or area 15 is used for targeted sound radiation from the coaxial transducer arrangement in the forward or forward direction with a downward component to promote pre-localization by this Arrangement generated sound events and this perforated area 15 extends over both the front high and low-mid range of the Transducer array.
  • the thickened zone embodies in the back Part of area 12, which is also probably the tweeter as the Woofer transducer of the transducer assembly extends a radiation dissipation zone for electrical and magnetic generated by the sound transducer arrangement in operation Radiation.
  • a derivation of the radiation from the Temporary area of a headphone user achieved.
  • the front perforated area 15 is acoustically permeable and only blocking with respect to those generated by the transducer arrangement 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 Boundary line 14 or its variant 14 'within zones 11 and 13 angled towards from runs and thus defines a perforated area 15 which is upward and rearward is limited by the right-angled course of the boundary line, whereby on the other hand the Reinforced part of 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 reference numeral 16th shown.
  • This Baffle 10 "partially also covers a coaxial transducer arrangement, the Outer contour is designated by the reference number 17.
  • the baffle in one piece from a circular disc-shaped MU sheet which above the Coaxial transducer arrangement has a plurality of openings, i.e. perforated is.
  • These breakthroughs are of different sizes and is one of the major breakthroughs schematically designated by the reference numeral 18 during one of the small openings is schematically designated by the reference number 19.
  • the large openings 18 are on an outer circle of large diameter, while the smaller openings 19 on two inner circles come to lie, which are concentric to the outer circle.
  • the entire baffle is made of solid MU sheet.
  • the radiation dissipation zone is a non-perforated area 20 formed, starting from the transducer contour 19, the perforated area 18, 19 encloses inwardly towards the center of the perforated area.
  • the perforation-free area 20 has a reinforced MU material thickness formed and, not least for manufacturing reasons, this is thickened
  • the area in the radial direction extends to the opposite circular edge of the Baffle 10 ", as shown by reference numeral 21. Due to the oblique course of the Area 20 and its extension area 21 becomes an optimal one Radiation dissipation zone provided to the temple area of a headphone user optimally shield from electrical magnetic radiation that has its output in the Has coaxial sound transducer arrangement, which comes to lie 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)
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 true EP1189481A2 (fr) 2002-03-20
EP1189481A3 EP1189481A3 (fr) 2003-11-05
EP1189481B1 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
US20090295520A1 (en) * 2006-06-26 2009-12-03 Battelle Energy Alliance, Llc Magnetic structure
US7688036B2 (en) * 2006-06-26 2010-03-30 Battelle Energy Alliance, Llc System and method for storing energy
US20100013345A1 (en) * 2006-06-26 2010-01-21 Battelle Energy Alliance, Llc Bi-metal coil
US20090295253A1 (en) * 2006-06-26 2009-12-03 Battelle Energy Alliance, Llc Motor/generator
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
AU7154196A (en) * 1995-09-19 1997-04-09 Interval Research Corporation Earphones with eyeglass attachments
US5694475A (en) * 1995-09-19 1997-12-02 Interval Research Corporation Acoustically transparent earphones
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
US6554097B2 (en) 2003-04-29
EP1189481B1 (fr) 2005-06-08
EP1189481A3 (fr) 2003-11-05
ATE297648T1 (de) 2005-06-15
US20020066617A1 (en) 2002-06-06

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