SE511974C2 - Telefon med förbättrad lågfrekvensåtergivning - Google Patents

Telefon med förbättrad lågfrekvensåtergivning

Info

Publication number
SE511974C2
SE511974C2 SE9800909A SE9800909A SE511974C2 SE 511974 C2 SE511974 C2 SE 511974C2 SE 9800909 A SE9800909 A SE 9800909A SE 9800909 A SE9800909 A SE 9800909A SE 511974 C2 SE511974 C2 SE 511974C2
Authority
SE
Sweden
Prior art keywords
sound
speaker
telephone
low frequency
loudspeaker
Prior art date
Application number
SE9800909A
Other languages
English (en)
Swedish (sv)
Other versions
SE9800909D0 (sv
SE9800909L (sv
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
Priority to SE9800909A priority Critical patent/SE511974C2/sv
Publication of SE9800909D0 publication Critical patent/SE9800909D0/xx
Priority to CN99804087A priority patent/CN1293880A/zh
Priority to DE69908930T priority patent/DE69908930T2/de
Priority to EP99906633A priority patent/EP1074168B1/en
Priority to PCT/SE1999/000142 priority patent/WO1999048326A1/en
Priority to AU26490/99A priority patent/AU2649099A/en
Priority to AT99906633T priority patent/ATE243404T1/de
Priority to EEP200000570A priority patent/EE04412B1/et
Priority to BR9908897-5A priority patent/BR9908897A/pt
Priority to MYPI99000608A priority patent/MY123223A/en
Priority to US09/265,862 priority patent/US6263079B1/en
Publication of SE9800909L publication Critical patent/SE9800909L/
Publication of SE511974C2 publication Critical patent/SE511974C2/sv

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)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
  • Transceivers (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Telephone Function (AREA)
  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Headphones And Earphones (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
SE9800909A 1998-03-19 1998-03-19 Telefon med förbättrad lågfrekvensåtergivning SE511974C2 (sv)

Priority Applications (11)

Application Number Priority Date Filing Date Title
SE9800909A SE511974C2 (sv) 1998-03-19 1998-03-19 Telefon med förbättrad lågfrekvensåtergivning
BR9908897-5A BR9908897A (pt) 1998-03-19 1999-02-03 Telefone
PCT/SE1999/000142 WO1999048326A1 (en) 1998-03-19 1999-02-03 Telephone with means for enhancing the low-frequency response
DE69908930T DE69908930T2 (de) 1998-03-19 1999-02-03 Telefon mit mitteln zur niederfrequenzgangsverbesserung
EP99906633A EP1074168B1 (en) 1998-03-19 1999-02-03 Telephone with means for anhancing the low-frequency response
CN99804087A CN1293880A (zh) 1998-03-19 1999-02-03 带有增强低频响应的装置的电话机
AU26490/99A AU2649099A (en) 1998-03-19 1999-02-03 Telephone with means for anhancing the low-frequency response
AT99906633T ATE243404T1 (de) 1998-03-19 1999-02-03 Telefon mit mitteln zur niederfrequenzgangsverbesserung
EEP200000570A EE04412B1 (et) 1998-03-19 1999-02-03 Madalas sagedusalas tõstetud sageduskarakteristikuga telefon
MYPI99000608A MY123223A (en) 1998-03-19 1999-02-22 Telephone with means for enhancing the low-frequency response
US09/265,862 US6263079B1 (en) 1998-03-19 1999-03-11 Telephone with means for enhancing the low-frequency response

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE9800909A SE511974C2 (sv) 1998-03-19 1998-03-19 Telefon med förbättrad lågfrekvensåtergivning

Publications (3)

Publication Number Publication Date
SE9800909D0 SE9800909D0 (sv) 1998-03-19
SE9800909L SE9800909L (sv) 1999-09-20
SE511974C2 true SE511974C2 (sv) 2000-01-10

Family

ID=20410604

Family Applications (1)

Application Number Title Priority Date Filing Date
SE9800909A SE511974C2 (sv) 1998-03-19 1998-03-19 Telefon med förbättrad lågfrekvensåtergivning

Country Status (11)

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

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE459191T1 (de) * 2002-04-09 2010-03-15 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
WO2017093880A1 (en) 2015-12-04 2017-06-08 Sabic Global Technologies B.V. Route for aromatic production from isopropanol and carbon dioxide
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
EE04412B1 (et) 2004-12-15
SE9800909D0 (sv) 1998-03-19
DE69908930D1 (de) 2003-07-24
CN1293880A (zh) 2001-05-02
MY123223A (en) 2006-05-31
AU2649099A (en) 1999-10-11
EP1074168A1 (en) 2001-02-07
DE69908930T2 (de) 2004-05-13
SE9800909L (sv) 1999-09-20
BR9908897A (pt) 2000-11-21
EE200000570A (et) 2002-02-15
US6263079B1 (en) 2001-07-17
ATE243404T1 (de) 2003-07-15
WO1999048326A1 (en) 1999-09-23
WO1999048326A8 (en) 1999-11-18
EP1074168B1 (en) 2003-06-18

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Legal Events

Date Code Title Description
NUG Patent has lapsed