CA2094667A1 - Two-way communications earset with filter - Google Patents

Two-way communications earset with filter

Info

Publication number
CA2094667A1
CA2094667A1 CA002094667A CA2094667A CA2094667A1 CA 2094667 A1 CA2094667 A1 CA 2094667A1 CA 002094667 A CA002094667 A CA 002094667A CA 2094667 A CA2094667 A CA 2094667A CA 2094667 A1 CA2094667 A1 CA 2094667A1
Authority
CA
Canada
Prior art keywords
filter
microphone
high end
frequency
ear
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.)
Abandoned
Application number
CA002094667A
Other languages
English (en)
French (fr)
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.)
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 to JP4092457A priority Critical patent/JPH0817415B2/ja
Priority to ES93104560T priority patent/ES2108151T3/es
Priority to DE69313902T priority patent/DE69313902T2/de
Priority to EP93104560A priority patent/EP0564874B1/de
Application filed by Individual filed Critical Individual
Priority to CA002094667A priority patent/CA2094667A1/en
Publication of CA2094667A1 publication Critical patent/CA2094667A1/en
Abandoned 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)
  • Telephone Set Structure (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Headphones And Earphones (AREA)
CA002094667A 1992-03-19 1993-04-22 Two-way communications earset with filter Abandoned CA2094667A1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP4092457A JPH0817415B2 (ja) 1992-03-19 1992-03-19 イヤーセット型送受話器
ES93104560T ES2108151T3 (es) 1992-03-19 1993-03-19 Microtelefono de comunicaciones bidireccionales con filtro.
DE69313902T DE69313902T2 (de) 1992-03-19 1993-03-19 Zweiweg-Kommunikations-Ohrhörer mit Filter
EP93104560A EP0564874B1 (de) 1992-03-19 1993-03-19 Zweiweg-Kommunikations-Ohrhörer mit Filter
CA002094667A CA2094667A1 (en) 1992-03-19 1993-04-22 Two-way communications earset with filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4092457A JPH0817415B2 (ja) 1992-03-19 1992-03-19 イヤーセット型送受話器
CA002094667A CA2094667A1 (en) 1992-03-19 1993-04-22 Two-way communications earset with filter

Publications (1)

Publication Number Publication Date
CA2094667A1 true CA2094667A1 (en) 1994-10-23

Family

ID=25676114

Family Applications (1)

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

Country Status (5)

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

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0870176B1 (de) 1995-12-22 2003-03-19 Brüel & Kjaer Sound & Vibration Measurement A/S System und verfahren zur messung eines kontinuierlichen signals
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 (de) * 2009-07-07 2011-02-16 Nxp B.V. Mikrophon-Lautsprecher-Vorrichtung, die einen Tiefpassfilter umfasst
JP5646969B2 (ja) * 2010-11-24 2014-12-24 日立アプライアンス株式会社 空気調和機

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5525577Y2 (de) * 1975-09-16 1980-06-19
GB1530814A (en) * 1977-06-20 1978-11-01 British Aircraft Corp Ltd Hearing protection devices
JPS58188996A (ja) * 1982-04-27 1983-11-04 Katsuo Motoi 外耳道内双方向通話装置
FR2595498B1 (fr) * 1986-03-07 1989-06-02 Centre Nat Rech Scient Procedes et dispositifs pour attenuer les bruits d'origine externe parvenant au tympan et ameliorer l'intelligibilite des communications electro-acoustiques
DE3627002A1 (de) * 1986-08-08 1988-02-18 Philips Patentverwaltung Verfahren und schaltungsanordnung zur akustischen kompensation des umgebungsgeraeusches bei kopfhoererempfang

Also Published As

Publication number Publication date
DE69313902D1 (de) 1997-10-23
ES2108151T3 (es) 1997-12-16
DE69313902T2 (de) 1998-01-22
JPH05268310A (ja) 1993-10-15
EP0564874B1 (de) 1997-09-17
JPH0817415B2 (ja) 1996-02-21
EP0564874A1 (de) 1993-10-13

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Legal Events

Date Code Title Description
FZDE Discontinued