NL249090A - - Google Patents

Info

Publication number
NL249090A
NL249090A NL249090DA NL249090A NL 249090 A NL249090 A NL 249090A NL 249090D A NL249090D A NL 249090DA NL 249090 A NL249090 A NL 249090A
Authority
NL
Netherlands
Application number
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.)
Publication of NL249090A publication Critical patent/NL249090A/xx

Links

Classifications

    • 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
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/38—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means in which sound waves act upon both sides of a diaphragm and incorporating acoustic phase-shifting means, e.g. pressure-gradient microphone
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R19/00—Electrostatic transducers
    • H04R19/04—Microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
NL249090D 1959-03-04 NL249090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT170659A AT209396B (en) 1959-03-04 1959-03-04 Condenser microphone

Publications (1)

Publication Number Publication Date
NL249090A true NL249090A (en)

Family

ID=3519210

Family Applications (1)

Application Number Title Priority Date Filing Date
NL249090D NL249090A (en) 1959-03-04

Country Status (5)

Country Link
US (1) US3082298A (en)
AT (1) AT209396B (en)
DE (1) DE1121116B (en)
GB (1) GB911866A (en)
NL (1) NL249090A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT211394B (en) * 1959-10-09 1960-10-10 Goerike Rudolf Condenser microphone
AT226290B (en) * 1961-06-19 1963-03-11 Akg Akustische Kino Geraete Sound receiver with preferably one-sided, optionally adjustable directional characteristic, containing one or more transducer systems working according to the electrostatic principle
GB1067344A (en) * 1964-09-11 1967-05-03 Standard Telephones Cables Ltd Electro-mechanical transducer arrangement
US3777079A (en) * 1971-10-21 1973-12-04 Willco Gmbh Directional microphone for head mounted midget hearing aids
US4675906A (en) * 1984-12-20 1987-06-23 At&T Company, At&T Bell Laboratories Second order toroidal microphone
JPH0681352B2 (en) * 1985-11-19 1994-10-12 株式会社オ−デイオテクニカ Narrow directional microphone
JP2562295B2 (en) * 1985-11-19 1996-12-11 株式会社 オ−デイオテクニカ Narrow directional microphone
USD444143S1 (en) 1999-10-08 2001-06-26 Telex Communications, Inc. Microphone
JP1603197S (en) * 2017-06-12 2018-05-07

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE523587C (en) * 1926-08-12 1931-04-28 Georg Seibt Fabrik Elektr U Me Electrostatic speaker
US1776112A (en) * 1929-04-08 1930-09-16 Ephraim Banning Loud-speaker condenser
DE912821C (en) * 1935-11-13 1954-06-03 Siemens Ag Facility for voice transmission from noisy rooms
DE884516C (en) * 1940-12-09 1953-07-27 Siemens Ag Electrostatic microphone
US2387845A (en) * 1943-06-24 1945-10-30 Bell Telephone Labor Inc Electroacoustic transducer
GB571870A (en) * 1943-12-10 1945-09-12 Otto Kurt Kolb Improvements relating to unidirectional microphones
US2686847A (en) * 1951-12-12 1954-08-17 Bell Telephone Labor Inc Directional transducer
DE1044170B (en) * 1952-08-14 1958-11-20 Schoeps Dr Ing Karl Microphone arrangement to achieve a directional characteristic for preferably one-sided sound pick-up
US2787671A (en) * 1952-10-06 1957-04-02 Schall Technik Dr Ing Karl Sch Microphone arrangement
DE1011467B (en) * 1954-08-13 1957-07-04 Schoeps Dr Ing Karl Switchable condenser microphone
US2920140A (en) * 1958-03-14 1960-01-05 Rca Corp Electrostatic microphone circuits

Also Published As

Publication number Publication date
US3082298A (en) 1963-03-19
AT209396B (en) 1960-06-10
GB911866A (en) 1962-11-28
DE1121116B (en) 1962-01-04

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