CA982684A - Noise canceling transmitter - Google Patents

Noise canceling transmitter

Info

Publication number
CA982684A
CA982684A CA188,640A CA188640A CA982684A CA 982684 A CA982684 A CA 982684A CA 188640 A CA188640 A CA 188640A CA 982684 A CA982684 A CA 982684A
Authority
CA
Canada
Prior art keywords
noise canceling
transmitter
canceling transmitter
noise
canceling
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.)
Expired
Application number
CA188,640A
Other versions
CA188640S (en
Inventor
Bernard F. Kloek
Hans C. Mol
Ranjit Biswas
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.)
Roanwell Corp
Original Assignee
Roanwell 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 Roanwell Corp filed Critical Roanwell Corp
Application granted granted Critical
Publication of CA982684A publication Critical patent/CA982684A/en
Expired 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
    • H04M1/19—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
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/326—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for microphones
CA188,640A 1972-12-21 1973-12-20 Noise canceling transmitter Expired CA982684A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00317241A US3830988A (en) 1972-12-21 1972-12-21 Noise canceling transmitter

Publications (1)

Publication Number Publication Date
CA982684A true CA982684A (en) 1976-01-27

Family

ID=23232760

Family Applications (1)

Application Number Title Priority Date Filing Date
CA188,640A Expired CA982684A (en) 1972-12-21 1973-12-20 Noise canceling transmitter

Country Status (3)

Country Link
US (1) US3830988A (en)
JP (1) JPS5720733B2 (en)
CA (1) CA982684A (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1082828A (en) * 1976-02-23 1980-07-29 Western Electric Company, Incorporated Telephone set
JPS6017191B2 (en) * 1977-12-30 1985-05-01 アイホン株式会社 Microphone unit with wind noise attenuation effect
US4163875A (en) * 1978-02-09 1979-08-07 Northern Telecom Limited Telephone handset with transmitter having a one piece gasket for sealing and holding of transmitter members
US4288663A (en) * 1980-03-05 1981-09-08 Roanwell Corporation Noise canceling transmitter
US4463222A (en) * 1981-12-23 1984-07-31 Roanwell Corporation Noise canceling transmitter
US4449236A (en) * 1982-04-08 1984-05-15 Walker Equipment Corporation Anti-side tone transmitter
US4584702A (en) * 1983-12-19 1986-04-22 Walker Equipment Corporation Noise cancelling telephone transmitter insertable in telephone handset receptacle
US4773091A (en) * 1986-06-16 1988-09-20 Northern Telecom Limited Telephone handset for use in noisy locations
US5239578A (en) * 1990-05-15 1993-08-24 Plantronics, Inc. Noise cancelling apparatus for a telephone handset
US5673325A (en) * 1992-10-29 1997-09-30 Andrea Electronics Corporation Noise cancellation apparatus
US5732143A (en) * 1992-10-29 1998-03-24 Andrea Electronics Corp. Noise cancellation apparatus
US5381473A (en) * 1992-10-29 1995-01-10 Andrea Electronics Corporation Noise cancellation apparatus
US5226076A (en) * 1993-02-28 1993-07-06 At&T Bell Laboratories Directional microphone assembly
JP2000082522A (en) * 1998-09-08 2000-03-21 Smk Corp Connector for connecting electronic parts
US6363345B1 (en) 1999-02-18 2002-03-26 Andrea Electronics Corporation System, method and apparatus for cancelling noise
US6594367B1 (en) 1999-10-25 2003-07-15 Andrea Electronics Corporation Super directional beamforming design and implementation
US11245982B2 (en) 2020-06-22 2022-02-08 Gopro, Inc. Wind noise reduction by microphone placement
USD901459S1 (en) * 2020-07-15 2020-11-10 Yang Zhao Microphone pop filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4183Y1 (en) * 1965-03-22 1966-01-07
CH473515A (en) * 1968-04-23 1969-05-31 Peiker Acustic Microphone
US3733441A (en) * 1971-06-14 1973-05-15 Electro Voice Ambipolar microphone unit

Also Published As

Publication number Publication date
JPS49116999A (en) 1974-11-08
JPS5720733B2 (en) 1982-05-01
US3830988A (en) 1974-08-20

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