CA2009293A1 - Emetteur de materiel de communication - Google Patents

Emetteur de materiel de communication

Info

Publication number
CA2009293A1
CA2009293A1 CA2009293A CA2009293A CA2009293A1 CA 2009293 A1 CA2009293 A1 CA 2009293A1 CA 2009293 A CA2009293 A CA 2009293A CA 2009293 A CA2009293 A CA 2009293A CA 2009293 A1 CA2009293 A1 CA 2009293A1
Authority
CA
Canada
Prior art keywords
microphone
air chamber
chamber housing
communication equipment
handset transmitter
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
CA2009293A
Other languages
English (en)
Other versions
CA2009293C (fr
Inventor
Hidenori Oku
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.)
Toshiba Corp
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
Application filed by Individual filed Critical Individual
Publication of CA2009293A1 publication Critical patent/CA2009293A1/fr
Application granted granted Critical
Publication of CA2009293C publication Critical patent/CA2009293C/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/03—Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
    • H04M1/035—Improving the acoustic characteristics by means of constructional features of the housing, e.g. ribs, walls, resonating chambers or cavities

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
CA002009293A 1989-02-06 1990-02-05 Emetteur de materiel de communication Expired - Lifetime CA2009293C (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1989012815U JPH0727715Y2 (ja) 1989-02-06 1989-02-06 ハンドセット
JP12815/1989 1989-02-06

Publications (2)

Publication Number Publication Date
CA2009293A1 true CA2009293A1 (fr) 1990-08-06
CA2009293C CA2009293C (fr) 1994-07-26

Family

ID=11815884

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002009293A Expired - Lifetime CA2009293C (fr) 1989-02-06 1990-02-05 Emetteur de materiel de communication

Country Status (5)

Country Link
US (1) US5144656A (fr)
JP (1) JPH0727715Y2 (fr)
KR (1) KR930001820B1 (fr)
CA (1) CA2009293C (fr)
GB (1) GB2228646B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9317982U1 (de) * 1993-11-24 1994-03-10 Siemens AG, 80333 München Handapparat für eine Fernsprechstation
JP2609822B2 (ja) * 1994-10-12 1997-05-14 埼玉日本電気株式会社 送話器
US7106876B2 (en) * 2002-10-15 2006-09-12 Shure Incorporated Microphone for simultaneous noise sensing and speech pickup
KR100831119B1 (ko) * 2002-12-24 2008-05-20 엘지노텔 주식회사 통신용 단말기의 노이즈 감쇠 핸드셋
US20080170724A1 (en) * 2007-01-16 2008-07-17 Byron Demetrious Cancelmo Vocal monitor
DE102007021276A1 (de) * 2007-05-07 2008-11-13 Siemens Medical Instruments Pte. Ltd. Hörhilfegerät mit einer Abschirmung
US9686389B2 (en) * 2015-11-02 2017-06-20 Cisco Technology, Inc. Audio transducer and associated holding device for enhanced acoustic and electromagnetic coupling
US11785375B2 (en) 2021-06-15 2023-10-10 Quiet, Inc. Precisely controlled microphone acoustic attenuator with protective microphone enclosure
US12445761B2 (en) 2021-06-15 2025-10-14 Quiet, Inc. Precisely controlled microphone acoustic attenuator with protective microphone enclosure

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3240883A (en) * 1961-05-25 1966-03-15 Shure Bros Microphone
ZA728218B (en) * 1971-11-23 1973-07-25 Plessey Ducon Ltd Microphone damping
CH528197A (de) * 1971-12-20 1972-09-15 Ibm Gehäuseanordnung mit einem elektro-akustischen Wandler, und Verwendung derselben in einem Telefonapparat einer Nachrichtenübertragungsanlage mit PCM-Codierung
JPS6017191B2 (ja) * 1977-12-30 1985-05-01 アイホン株式会社 風雑音減衰効果を有するマイクロンホンユニツト
DE2831401C2 (de) * 1978-07-17 1987-03-19 Siemens AG, 1000 Berlin und 8000 München Elektroakustischer Wandler
DE2831411C2 (de) * 1978-07-17 1983-10-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Elektroakustischer Wandler mit mit piezoelektrischer Schicht versehener Membran
GB2064265B (en) * 1979-11-30 1984-01-11 Pye Electronic Prod Ltd Microphone unit
JPS62141246U (fr) * 1986-02-28 1987-09-05
US4776009A (en) * 1986-06-09 1988-10-04 Northern Telecom Limited Telephone handset having housings assembled without mechanical fasteners
DE3634620A1 (de) * 1986-10-10 1988-04-14 Siemens Ag Anordnung zum schutz vor spannungsueberschlaegen bei handapparaten der fernsprechtechnik

Also Published As

Publication number Publication date
KR900013747A (ko) 1990-09-06
GB2228646A (en) 1990-08-29
JPH02103950U (fr) 1990-08-17
CA2009293C (fr) 1994-07-26
GB2228646B (en) 1993-09-08
KR930001820B1 (ko) 1993-03-13
GB9002482D0 (en) 1990-04-04
US5144656A (en) 1992-09-01
JPH0727715Y2 (ja) 1995-06-21

Similar Documents

Publication Publication Date Title
AU2001268954A1 (en) A microphone assembly
US4773091A (en) Telephone handset for use in noisy locations
USD267178S (en) Telephone handset
CA2009293A1 (fr) Emetteur de materiel de communication
ATE288178T1 (de) Silizium-kondensator-kleinmikrofon
US5732361A (en) Adapter for mobile phone
CA2035411A1 (fr) Circuit de sonnerie pour poste telephonique portatif
CA2451817A1 (fr) Module de raccordement electrique
GB1363550A (en) Electro-acoustic transducer device
CA2001724A1 (fr) Microphone a electret
CA2073716A1 (fr) Support de combine de telephone sans fil
HK88795A (en) Hearing assist telephone
USD275568S (en) Telephone
USD278815S (en) Housing for a telephone handset
CA2048417A1 (fr) Combine telephonique a microphone directif
USD264079S (en) Electronic telephone unit
GB1437751A (en) Telephone handsets
WO2001069964A3 (fr) Commutateur acoustique electroniquement commutable
USD263048S (en) Telephone handset
DE69900205D1 (de) Mobilfon mit Lauthöreinrichtung
USD244468S (en) Desk telephone station with built-in freespeaking device and an additional casing for a sound transmitter and/or receiver
JP2984599B2 (ja) 電話機
EP0399176B1 (fr) Combiné téléphonique opérant comme une unité indépendante
USD290841S (en) Housing for a desk telephone paystation base
USD267090S (en) Telephone

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKEC Expiry (correction)

Effective date: 20121202