DK21413C - Thermal Microphone. - Google Patents

Thermal Microphone.

Info

Publication number
DK21413C
DK21413C DK21413DA DK21413C DK 21413 C DK21413 C DK 21413C DK 21413D A DK21413D A DK 21413DA DK 21413 C DK21413 C DK 21413C
Authority
DK
Denmark
Prior art keywords
microphone
thermal
thermal microphone
Prior art date
Application number
Other languages
Danish (da)
Original Assignee
De Nl Thermo Telephoon Mij Nv
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 date
Application granted granted Critical
Publication of DK21413C publication Critical patent/DK21413C/en

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
    • H04R23/00—Transducers other than those covered by groups H04R9/00 - H04R21/00
    • H04R23/002—Transducers other than those covered by groups H04R9/00 - H04R21/00 using electrothermic-effect transducer

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Details Of Audible-Bandwidth Transducers (AREA)
  • Catching Or Destruction (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Building Environments (AREA)
  • Connections Arranged To Contact A Plurality Of Conductors (AREA)
DK21413D 1915-02-11 Thermal Microphone. DK21413C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE191505838X 1915-02-11

Publications (1)

Publication Number Publication Date
DK21413C true DK21413C (en) 1916-08-07

Family

ID=32668494

Family Applications (1)

Application Number Title Priority Date Filing Date
DK21413D DK21413C (en) 1915-02-11 Thermal Microphone.

Country Status (5)

Country Link
US (1) US1389242A (en)
AT (1) AT76294B (en)
DK (1) DK21413C (en)
FR (1) FR480858A (en)
GB (2) GB191505837A (en)

Also Published As

Publication number Publication date
US1389242A (en) 1921-08-30
GB191505838A (en) 1916-04-19
GB191505837A (en) 1916-04-19
FR480858A (en) 1916-10-04
AT76294B (en) 1919-04-25

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