EP1039777A2 - Microphone de petite taille - Google Patents

Microphone de petite taille Download PDF

Info

Publication number
EP1039777A2
EP1039777A2 EP00890091A EP00890091A EP1039777A2 EP 1039777 A2 EP1039777 A2 EP 1039777A2 EP 00890091 A EP00890091 A EP 00890091A EP 00890091 A EP00890091 A EP 00890091A EP 1039777 A2 EP1039777 A2 EP 1039777A2
Authority
EP
European Patent Office
Prior art keywords
microphone
membrane
microphone according
component
tube
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
EP00890091A
Other languages
German (de)
English (en)
Other versions
EP1039777A3 (fr
EP1039777B1 (fr
Inventor
Hugo Dr. Lenhard-Backhaus
Richard Pribyl
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.)
AKG Acoustics GmbH
Original Assignee
AKG Acoustics GmbH
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
Application filed by AKG Acoustics GmbH filed Critical AKG Acoustics GmbH
Publication of EP1039777A2 publication Critical patent/EP1039777A2/fr
Publication of EP1039777A3 publication Critical patent/EP1039777A3/fr
Application granted granted Critical
Publication of EP1039777B1 publication Critical patent/EP1039777B1/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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2201/00—Details of transducers, loudspeakers or microphones covered by H04R1/00 but not provided for in any of its subgroups
    • H04R2201/02—Details casings, cabinets or mounting therein for transducers covered by H04R1/02 but not provided for in any of its subgroups
    • H04R2201/023—Transducers incorporated in garment, rucksacks or the like

Definitions

  • the invention relates to small and very small microphones that on clothing or often even directly on the body, for example in the hair. These microphones usually have one, but more rarely two or more membranes on, mostly via recess in the jacket of the cylindrical Microphones are sitting. With this design between a face plate and a base plate and the jacket with the openings that are covered by the membranes an inner cavity created for the acoustic Properties of the microphone is necessary and essential.
  • A is preferred as the component with high acoustic impedance Pressure compensation tube with an inner diameter in the Range of about 70 ⁇ m and a length of 3 to 4 mm, but it is also conceivable to kind of stubble out open pore foam or the like to use if also preferred the tube from an acoustic point of view becomes.
  • the limp closing membrane only has to be impermeable to moisture and be as weak as possible, i.e. without Preload must be designed and installed and only serves to separate the compensation volume from the environment and protect.
  • the ones usual in the field of electroacoustics used materials so for that limp membrane for example polycarbonate, polyurethane, Rubber or elastomers, but also metal foils and for that Tubes of corrosion-resistant materials such as Nickel silver, corrosion-resistant steel (Nirosta) or plastic.
  • the invention is shown schematically in the drawing. The only figure shows an axial section through a greatly enlarged microphone according to the invention.
  • the size of the microphone should point this out be that its length L is about 7 mm and largest diameter D is about 4.5 mm.
  • a Pressure equalization tube 4 arranged, according to his Dimensions and its material have a high acoustic Has impedance so that it acts as a low pass filter. This ensures that the vibrations of the membranes 33 ', which transmit in the audible frequency range are too high-frequency to be noticeable pulsating flow of air from the inner cavity 7 through the tube 4 to an equalizing cavity 8 cause.
  • the compensation cavity 8 is in the embodiment shown through a recess in the front panel 9 of the Housing 2 is formed and is by a limp protective membrane 6 sealed off from the environment.
  • a limp protective membrane 6 sealed off from the environment.
  • an annular one Component 10 provided on the end plate 9, the preferably also as a fastener for the flap protective membrane 6 is used.
  • the pressure compensation tube 4 is preferably by means of a Insulator 5 held in the end plate 9, so to be vibration-free and acoustically neutral and the acoustic properties of the microphone as little as possible to influence.
  • the invention is of course not based on the illustrated Embodiment limited, but can be modified in various ways. So it can solution according to the invention also in microphones with only one Membrane is used, no tube has to be used but, as mentioned above, can be a other component with high acoustic impedance can be used, where appropriate also a combination of such a for example sponge-like component and one shorter tubes can be used.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
EP00890091A 1999-03-23 2000-03-22 Microphone de petite taille Expired - Lifetime EP1039777B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT54599 1999-03-23
AT0054599A AT407322B (de) 1999-03-23 1999-03-23 Klein-mikrophon

Publications (3)

Publication Number Publication Date
EP1039777A2 true EP1039777A2 (fr) 2000-09-27
EP1039777A3 EP1039777A3 (fr) 2007-05-02
EP1039777B1 EP1039777B1 (fr) 2010-11-24

Family

ID=3493448

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00890091A Expired - Lifetime EP1039777B1 (fr) 1999-03-23 2000-03-22 Microphone de petite taille

Country Status (5)

Country Link
US (1) US6351543B1 (fr)
EP (1) EP1039777B1 (fr)
JP (1) JP4154108B2 (fr)
AT (2) AT407322B (fr)
DE (1) DE50016034D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1998591B1 (fr) * 2007-05-29 2018-04-04 Harris Corporation Ensemble haut-parleur submersible

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU4520401A (en) * 1999-12-09 2001-06-18 Sonionmicrotronic Nederland B.V. Miniature microphone
ATE315880T1 (de) * 2003-09-11 2006-02-15 Akg Acoustics Gmbh Dynamischer elektroakustischer wandler, insbesondere kleiner lautsprecher
EP1694094A1 (fr) * 2005-02-18 2006-08-23 AKG Acoustics GmbH Membrane pour convertisseur dynamique
DE102012013392A1 (de) * 2012-07-05 2014-01-09 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Elektrische Hornvorrichtung für einFahrzeug und Fahrzeug
JP6192048B2 (ja) * 2014-01-28 2017-09-06 株式会社オーディオテクニカ コンデンサヘッドホンユニット及びコンデンサヘッドホン

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868894A (en) * 1955-09-14 1959-01-13 Theodore J Schultz Miniature condenser microphone
WO1997001258A1 (fr) * 1995-06-23 1997-01-09 Microtronic A/S Microphone micromecanique
GB2324222A (en) * 1997-04-11 1998-10-14 Sennheiser Electronic Sweat-proof capacitor microphone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5272758A (en) * 1991-09-09 1993-12-21 Hosiden Corporation Electret condenser microphone unit
US5673330A (en) * 1995-11-08 1997-09-30 Chang; Ching-Lu Microphone transducer with noise reducing member
JP3192100B2 (ja) * 1996-11-08 2001-07-23 株式会社オーディオテクニカ マイクロホン
US5781644A (en) * 1997-06-20 1998-07-14 Chang; Ching-Lu Pick-up device for a microphone
JP4106119B2 (ja) * 1997-12-26 2008-06-25 株式会社オーディオテクニカ ダイナミックマイクロホン

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2868894A (en) * 1955-09-14 1959-01-13 Theodore J Schultz Miniature condenser microphone
WO1997001258A1 (fr) * 1995-06-23 1997-01-09 Microtronic A/S Microphone micromecanique
GB2324222A (en) * 1997-04-11 1998-10-14 Sennheiser Electronic Sweat-proof capacitor microphone

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1998591B1 (fr) * 2007-05-29 2018-04-04 Harris Corporation Ensemble haut-parleur submersible

Also Published As

Publication number Publication date
DE50016034D1 (de) 2011-01-05
ATE489814T1 (de) 2010-12-15
JP4154108B2 (ja) 2008-09-24
AT407322B (de) 2001-02-26
EP1039777A3 (fr) 2007-05-02
ATA54599A (de) 2000-06-15
US6351543B1 (en) 2002-02-26
EP1039777B1 (fr) 2010-11-24
JP2000287288A (ja) 2000-10-13

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