SG43700A1 - Noise-cancelling telephone handset - Google Patents

Noise-cancelling telephone handset

Info

Publication number
SG43700A1
SG43700A1 SG1995002275A SG1995002275A SG43700A1 SG 43700 A1 SG43700 A1 SG 43700A1 SG 1995002275 A SG1995002275 A SG 1995002275A SG 1995002275 A SG1995002275 A SG 1995002275A SG 43700 A1 SG43700 A1 SG 43700A1
Authority
SG
Singapore
Prior art keywords
noise
telephone handset
cancelling
cancelling telephone
handset
Prior art date
Application number
SG1995002275A
Other languages
English (en)
Inventor
Charles Sanford
Charles Spurgeon Bartlett
John Bradley Hunter
Original Assignee
At & T Corp
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 At & T Corp filed Critical At & T Corp
Publication of SG43700A1 publication Critical patent/SG43700A1/en

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
    • H04M1/19—Arrangements of transmitters, receivers, or complete sets to prevent eavesdropping, to attenuate local noise or to prevent undesired transmission; Mouthpieces or receivers specially adapted therefor
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Telephone Set Structure (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
  • Transceivers (AREA)
SG1995002275A 1992-09-30 1993-09-22 Noise-cancelling telephone handset SG43700A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US95417592A 1992-09-30 1992-09-30

Publications (1)

Publication Number Publication Date
SG43700A1 true SG43700A1 (en) 1997-11-14

Family

ID=25495040

Family Applications (1)

Application Number Title Priority Date Filing Date
SG1995002275A SG43700A1 (en) 1992-09-30 1993-09-22 Noise-cancelling telephone handset

Country Status (8)

Country Link
US (1) US5491747A (de)
EP (1) EP0590869B1 (de)
JP (1) JP2795302B2 (de)
KR (1) KR100274913B1 (de)
CA (1) CA2101500C (de)
DE (1) DE69315792T2 (de)
ES (1) ES2110577T3 (de)
SG (1) SG43700A1 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2609822B2 (ja) * 1994-10-12 1997-05-14 埼玉日本電気株式会社 送話器
DE19513111A1 (de) * 1995-04-07 1996-10-10 Sennheiser Electronic Einrichtung zur Verminderung von Störschall
US6654467B1 (en) 1997-05-07 2003-11-25 Stanley J. York Active noise cancellation apparatus and method
US6163610A (en) * 1998-04-06 2000-12-19 Lucent Technologies Inc. Telephonic handset apparatus having an earpiece monitor and reduced inter-user variability
US7031460B1 (en) 1998-10-13 2006-04-18 Lucent Technologies Inc. Telephonic handset employing feed-forward noise cancellation
KR20000067321A (ko) * 1999-04-27 2000-11-15 정완진 스피커의 광대역 음향파 정형 및 제어시스템
USD428408S (en) * 1999-07-20 2000-07-18 Ume Voice, Inc. Element for a noise cancellation device
US6285772B1 (en) * 1999-07-20 2001-09-04 Umevoice, Inc. Noise control device
USD427999S (en) * 1999-07-20 2000-07-11 Umevoice, Inc. Element for a noise cancellation device
USD427998S (en) * 1999-07-20 2000-07-11 Umevoice, Inc. Noise cancellation device
US6396932B1 (en) 1999-07-21 2002-05-28 Umevoice, Inc. Pluggable noise-controlling apparatus and method
US6738483B1 (en) * 1999-10-12 2004-05-18 Sonic Systems, Inc. Overhead loudspeaker systems
US7764798B1 (en) 2006-07-21 2010-07-27 Cingular Wireless Ii, Llc Radio frequency interference reduction in connection with mobile phones
US7925307B2 (en) * 2006-10-31 2011-04-12 Palm, Inc. Audio output using multiple speakers
US8311590B2 (en) * 2006-12-05 2012-11-13 Hewlett-Packard Development Company, L.P. System and method for improved loudspeaker functionality
DE102007001980A1 (de) * 2007-01-08 2008-07-10 Sennheiser Electronic Gmbh & Co. Kg Kopfhörer
EP4033776A1 (de) * 2019-05-24 2022-07-27 Honeywell International Inc. Gehörschutzvorrichtungen, lärmbelastungssensoren dafür und sensorgehäuse und zugehörige verfahren dafür

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT328527B (de) * 1974-06-12 1976-03-25 Akg Akustische Kino Geraete Vorrichtung fur die stereophonische aufnahme bzw. kontrolle von schallereignissen
JPS5246803U (de) * 1975-09-30 1977-04-02
US4023209A (en) * 1975-12-17 1977-05-17 Gentex Corporation Protective helmet assembly with segmental outer shell
US4418248A (en) * 1981-12-11 1983-11-29 Koss Corporation Dual element headphone
US4644581A (en) * 1985-06-27 1987-02-17 Bose Corporation Headphone with sound pressure sensing means
US4782527A (en) * 1986-09-30 1988-11-01 Williamson Alfred T Telephone head/hand set
US4985925A (en) * 1988-06-24 1991-01-15 Sensor Electronics, Inc. Active noise reduction system
DK161288C (da) * 1988-10-21 1991-12-02 Alcatel Kirk As Telefonapparat-haandsaet
JPH02147993U (de) * 1989-05-17 1990-12-17
US5134659A (en) * 1990-07-10 1992-07-28 Mnc, Inc. Method and apparatus for performing noise cancelling and headphoning
US5305387A (en) * 1989-10-27 1994-04-19 Bose Corporation Earphoning
US5182774A (en) * 1990-07-20 1993-01-26 Telex Communications, Inc. Noise cancellation headset

Also Published As

Publication number Publication date
JP2795302B2 (ja) 1998-09-10
CA2101500A1 (en) 1994-03-31
EP0590869A1 (de) 1994-04-06
JPH06205092A (ja) 1994-07-22
DE69315792D1 (de) 1998-01-29
CA2101500C (en) 1996-12-17
DE69315792T2 (de) 1998-04-09
KR100274913B1 (ko) 2000-12-15
EP0590869B1 (de) 1997-12-17
KR940008333A (ko) 1994-04-29
ES2110577T3 (es) 1998-02-16
US5491747A (en) 1996-02-13

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