ATE243404T1 - Telefon mit mitteln zur niederfrequenzgangsverbesserung - Google Patents

Telefon mit mitteln zur niederfrequenzgangsverbesserung

Info

Publication number
ATE243404T1
ATE243404T1 AT99906633T AT99906633T ATE243404T1 AT E243404 T1 ATE243404 T1 AT E243404T1 AT 99906633 T AT99906633 T AT 99906633T AT 99906633 T AT99906633 T AT 99906633T AT E243404 T1 ATE243404 T1 AT E243404T1
Authority
AT
Austria
Prior art keywords
telephone
low frequency
frequency response
improvement means
response improvement
Prior art date
Application number
AT99906633T
Other languages
English (en)
Inventor
Johan Nordstroem
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE243404T1 publication Critical patent/ATE243404T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6016—Substation equipment, e.g. for use by subscribers including speech amplifiers in the receiver circuit
    • 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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)
  • Transceivers (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Headphones And Earphones (AREA)
AT99906633T 1998-03-19 1999-02-03 Telefon mit mitteln zur niederfrequenzgangsverbesserung ATE243404T1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9800909A SE511974C2 (sv) 1998-03-19 1998-03-19 Telefon med förbättrad lågfrekvensåtergivning
PCT/SE1999/000142 WO1999048326A1 (en) 1998-03-19 1999-02-03 Telephone with means for enhancing the low-frequency response

Publications (1)

Publication Number Publication Date
ATE243404T1 true ATE243404T1 (de) 2003-07-15

Family

ID=20410604

Family Applications (1)

Application Number Title Priority Date Filing Date
AT99906633T ATE243404T1 (de) 1998-03-19 1999-02-03 Telefon mit mitteln zur niederfrequenzgangsverbesserung

Country Status (11)

Country Link
US (1) US6263079B1 (de)
EP (1) EP1074168B1 (de)
CN (1) CN1293880A (de)
AT (1) ATE243404T1 (de)
AU (1) AU2649099A (de)
BR (1) BR9908897A (de)
DE (1) DE69908930T2 (de)
EE (1) EE04412B1 (de)
MY (1) MY123223A (de)
SE (1) SE511974C2 (de)
WO (1) WO1999048326A1 (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE50214231D1 (de) * 2002-04-09 2010-04-08 Palm Inc Mobiles Kommunikationsendgerät mit Freisprechbetrieb
KR100724404B1 (ko) * 2004-10-05 2007-06-04 엘지전자 주식회사 이동 통신 단말기의 외장형 저음 부스트 스피커 회로
FI20050690A0 (fi) * 2005-06-29 2005-06-29 Nokia Corp Kaiutinlaitteisto langattomassa viestintälaitteessa
US7588181B2 (en) * 2005-09-07 2009-09-15 Ty Shipman Method and apparatus for verifying the legitamacy of a financial instrument
WO2007080346A1 (fr) * 2006-01-13 2007-07-19 Thomson Licensing Telephone bande elargie a deux ecouteurs
CN103763663A (zh) * 2014-02-18 2014-04-30 山东共达电声股份有限公司 一种传声器及电子设备
CN108367998A (zh) 2015-12-04 2018-08-03 沙特基础工业全球技术公司 由异丙醇和二氧化碳生产芳香烃的途径
CN106937220A (zh) * 2017-02-28 2017-07-07 上海传英信息技术有限公司 电子通讯终端及其传声设备
JP2023128448A (ja) * 2022-03-03 2023-09-14 フォスター電機株式会社 スピーカ装置及び音響システム
CN115134735A (zh) * 2022-07-14 2022-09-30 安徽声美特智能科技有限公司 通过调控磁力强度对扬声器声响进行检测的装置

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4727583A (en) * 1986-10-28 1988-02-23 Motorola, Inc. Telephone transducer with improved frequency response
DE4117598C2 (de) * 1991-05-29 1993-12-16 Fernsprech Und Signalbau Gmbh Fernsprechapparat
DE4223572C1 (de) * 1992-07-17 1994-01-05 Hagenuk Telecom Gmbh Vorrichtung zur Schallabstrahlung
US5343523A (en) * 1992-08-03 1994-08-30 At&T Bell Laboratories Telephone headset structure for reducing ambient noise
US5802191A (en) * 1995-01-06 1998-09-01 Guenther; Godehard A. Loudspeakers, systems, and components thereof

Also Published As

Publication number Publication date
MY123223A (en) 2006-05-31
CN1293880A (zh) 2001-05-02
SE9800909D0 (sv) 1998-03-19
EP1074168B1 (de) 2003-06-18
EP1074168A1 (de) 2001-02-07
DE69908930T2 (de) 2004-05-13
BR9908897A (pt) 2000-11-21
SE9800909L (sv) 1999-09-20
AU2649099A (en) 1999-10-11
WO1999048326A1 (en) 1999-09-23
EE04412B1 (et) 2004-12-15
EE200000570A (et) 2002-02-15
WO1999048326A8 (en) 1999-11-18
US6263079B1 (en) 2001-07-17
DE69908930D1 (de) 2003-07-24
SE511974C2 (sv) 2000-01-10

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Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties