DE69313902D1 - Two-way communication earphones with filter - Google Patents

Two-way communication earphones with filter

Info

Publication number
DE69313902D1
DE69313902D1 DE69313902T DE69313902T DE69313902D1 DE 69313902 D1 DE69313902 D1 DE 69313902D1 DE 69313902 T DE69313902 T DE 69313902T DE 69313902 T DE69313902 T DE 69313902T DE 69313902 D1 DE69313902 D1 DE 69313902D1
Authority
DE
Germany
Prior art keywords
filter
way communication
communication earphones
earphones
way
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 - Fee Related
Application number
DE69313902T
Other languages
German (de)
Other versions
DE69313902T2 (en
Inventor
Noboru Yamaguchi
Masao Konomi
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.)
Pan Communications Inc
Original Assignee
Pan Communications Inc
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 Pan Communications Inc filed Critical Pan Communications Inc
Application granted granted Critical
Publication of DE69313902D1 publication Critical patent/DE69313902D1/en
Publication of DE69313902T2 publication Critical patent/DE69313902T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/02—Circuits for transducers, loudspeakers or microphones for preventing acoustic reaction, i.e. acoustic oscillatory feedback
    • 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
    • H04R1/1016—Earpieces of the intra-aural type

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Telephone Set Structure (AREA)
  • Headphones And Earphones (AREA)
DE69313902T 1992-03-19 1993-03-19 Two-way communication earphones with filter Expired - Fee Related DE69313902T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4092457A JPH0817415B2 (en) 1992-03-19 1992-03-19 Earset type handset
CA002094667A CA2094667A1 (en) 1992-03-19 1993-04-22 Two-way communications earset with filter

Publications (2)

Publication Number Publication Date
DE69313902D1 true DE69313902D1 (en) 1997-10-23
DE69313902T2 DE69313902T2 (en) 1998-01-22

Family

ID=25676114

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69313902T Expired - Fee Related DE69313902T2 (en) 1992-03-19 1993-03-19 Two-way communication earphones with filter

Country Status (5)

Country Link
EP (1) EP0564874B1 (en)
JP (1) JPH0817415B2 (en)
CA (1) CA2094667A1 (en)
DE (1) DE69313902T2 (en)
ES (1) ES2108151T3 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023765A1 (en) 1995-12-22 1997-07-03 A/S Brüel & Kjær A system and a method for measuring a continuous signal
US6175633B1 (en) 1997-04-09 2001-01-16 Cavcom, Inc. Radio communications apparatus with attenuating ear pieces for high noise environments
US6885753B2 (en) 2000-01-27 2005-04-26 New Transducers Limited Communication device using bone conduction
GB0024279D0 (en) * 2000-10-04 2000-11-15 New Transducers Ltd Audio apparatus
GB0321617D0 (en) 2003-09-10 2003-10-15 New Transducers Ltd Audio apparatus
EP2285135A1 (en) * 2009-07-07 2011-02-16 Nxp B.V. Microphone-speaker device comprising a low pass filter
JP5646969B2 (en) * 2010-11-24 2014-12-24 日立アプライアンス株式会社 Air conditioner

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525577Y2 (en) * 1975-09-16 1980-06-19
GB1530814A (en) * 1977-06-20 1978-11-01 British Aircraft Corp Ltd Hearing protection devices
JPS58188996A (en) * 1982-04-27 1983-11-04 Katsuo Motoi Two-way communication device in external auditory miatus
FR2595498B1 (en) * 1986-03-07 1989-06-02 Centre Nat Rech Scient METHODS AND DEVICES FOR MITIGATING EXTERNAL NOISE ARISING AT TYMPAN AND IMPROVING THE INTELLIGIBILITY OF ELECTROACOUSTIC COMMUNICATIONS
DE3627002A1 (en) * 1986-08-08 1988-02-18 Philips Patentverwaltung Method and circuit arrangement for acoustically compensating for the environmental noise in headphone reception

Also Published As

Publication number Publication date
EP0564874B1 (en) 1997-09-17
CA2094667A1 (en) 1994-10-23
DE69313902T2 (en) 1998-01-22
EP0564874A1 (en) 1993-10-13
ES2108151T3 (en) 1997-12-16
JPH05268310A (en) 1993-10-15
JPH0817415B2 (en) 1996-02-21

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee