NL190970A - - Google Patents

Info

Publication number
NL190970A
NL190970A NL190970DA NL190970A NL 190970 A NL190970 A NL 190970A NL 190970D A NL190970D A NL 190970DA NL 190970 A NL190970 A NL 190970A
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 NL190970A publication Critical patent/NL190970A/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

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
NL190970D 1954-01-11 NL190970A (enrdf_load_stackoverflow)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US403099A US3115207A (en) 1954-01-11 1954-01-11 Unidirectional microphone

Publications (1)

Publication Number Publication Date
NL190970A true NL190970A (enrdf_load_stackoverflow)

Family

ID=23594464

Family Applications (2)

Application Number Title Priority Date Filing Date
NL190970D NL190970A (enrdf_load_stackoverflow) 1954-01-11
NL102054D NL102054C (enrdf_load_stackoverflow) 1954-01-11

Family Applications After (1)

Application Number Title Priority Date Filing Date
NL102054D NL102054C (enrdf_load_stackoverflow) 1954-01-11

Country Status (3)

Country Link
US (1) US3115207A (enrdf_load_stackoverflow)
GB (1) GB774003A (enrdf_load_stackoverflow)
NL (2) NL102054C (enrdf_load_stackoverflow)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1096420B (de) * 1958-12-24 1961-01-05 Sennheiser Electronic Elektroakustischer Richtwandler
US3095484A (en) * 1959-10-22 1963-06-25 Electro Voice Unidirectional microphone
US3378649A (en) * 1964-09-04 1968-04-16 Electro Voice Pressure gradient directional microphone
AT251668B (de) * 1964-10-16 1967-01-10 Akg Akustische Kino Geraete Elektroakusticher Wandler
NL6604150A (enrdf_load_stackoverflow) * 1966-03-30 1967-10-02
US4410770A (en) * 1981-06-08 1983-10-18 Electro-Voice, Incorporated Directional microphone
ATA74486A (de) * 1986-03-20 1987-04-15 Akg Akustische Kino Geraete Richtmikrophon nach dem elektrostatischen oder elektrodynamischen wandlerprinzip
US5070530A (en) * 1987-04-01 1991-12-03 Grodinsky Robert M Electroacoustic transducers with increased magnetic stability for distortion reduction
US8818009B2 (en) * 2012-10-23 2014-08-26 Shure Acquisition Holdings, Inc. Dual diaphragm dynamic microphone transducer
JP2018148435A (ja) * 2017-03-07 2018-09-20 株式会社オーディオテクニカ 電気音響変換器と電気音響変換器の製造方法と電気音響変換装置
US11134337B2 (en) 2019-11-18 2021-09-28 Bose Corporation Variable port microphone
US11418873B2 (en) 2020-11-03 2022-08-16 Edward J. Simon Surveillance microphone

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2216961A (en) * 1937-09-30 1940-10-08 Rca Corp Sound translating apparatus
US2252846A (en) * 1938-09-30 1941-08-19 Associated Electric Lab Inc Acoustic device
NL72895C (enrdf_load_stackoverflow) * 1943-01-16
NL67077C (enrdf_load_stackoverflow) * 1945-12-03
DE1073545B (de) * 1953-06-02 1960-01-21 Akustische u Kino Gerate Ges mbH, Wien Dynamisches Rieht mikrophon

Also Published As

Publication number Publication date
GB774003A (en) 1957-05-01
US3115207A (en) 1963-12-24
NL102054C (enrdf_load_stackoverflow)

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