DK55033C - Ørestykke til Telefoner eller Talestykke til Mikrofoner. - Google Patents

Ørestykke til Telefoner eller Talestykke til Mikrofoner.

Info

Publication number
DK55033C
DK55033C DK55033DA DK55033C DK 55033 C DK55033 C DK 55033C DK 55033D A DK55033D A DK 55033DA DK 55033 C DK55033 C DK 55033C
Authority
DK
Denmark
Prior art keywords
voicepiece
earpiece
microphones
phones
Prior art date
Application number
Other languages
English (en)
Inventor
Niels Poul Robert Jarnak
Original Assignee
Niels Poul Robert Jarnak
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 Niels Poul Robert Jarnak filed Critical Niels Poul Robert Jarnak
Application granted granted Critical
Publication of DK55033C publication Critical patent/DK55033C/da

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
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Obtaining Desirable Characteristics In Audible-Bandwidth Transducers (AREA)
DK55033D 1936-10-05 1936-10-05 Ørestykke til Telefoner eller Talestykke til Mikrofoner. DK55033C (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DK55033T 1936-10-05
FR841086T 1938-07-25

Publications (1)

Publication Number Publication Date
DK55033C true DK55033C (da) 1938-08-01

Family

ID=8142986

Family Applications (1)

Application Number Title Priority Date Filing Date
DK55033D DK55033C (da) 1936-10-05 1936-10-05 Ørestykke til Telefoner eller Talestykke til Mikrofoner.

Country Status (5)

Country Link
US (1) US2153044A (da)
CH (1) CH200196A (da)
DK (1) DK55033C (da)
FR (1) FR841086A (da)
GB (1) GB487566A (da)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE847921C (de) * 1950-10-29 1952-08-28 Lab Wennebostel Dr Ing Sennhei Lautsprecher mit Rohrleitung
DE940167C (de) * 1953-07-01 1956-03-15 Carl Schmidbauer Einsprachevorrichtung fuer ein raumschallunempfindliches und akustisch rueckkopplungsfreies Mikrofon
US3084229A (en) * 1960-03-11 1963-04-02 Ampex Electrostatic earphone
US4189627A (en) * 1978-11-27 1980-02-19 Bell Telephone Laboratories, Incorporated Electroacoustic transducer filter assembly

Also Published As

Publication number Publication date
US2153044A (en) 1939-04-04
GB487566A (en) 1938-06-22
FR841086A (fr) 1939-05-10
CH200196A (de) 1938-09-30

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