FR480858A - Thermal microphone - Google Patents

Thermal microphone

Info

Publication number
FR480858A
FR480858A FR480858A FR480858DA FR480858A FR 480858 A FR480858 A FR 480858A FR 480858 A FR480858 A FR 480858A FR 480858D A FR480858D A FR 480858DA FR 480858 A FR480858 A FR 480858A
Authority
FR
France
Prior art keywords
microphone
thermal
thermal microphone
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
FR480858A
Other languages
French (fr)
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.)
DE NL THERMO TELEPHOON MIJ NV
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.)
Filing date
Publication date
Application filed by DE NL THERMO TELEPHOON MIJ NV filed Critical DE NL THERMO TELEPHOON MIJ NV
Application granted granted Critical
Publication of FR480858A publication Critical patent/FR480858A/en
Expired legal-status Critical Current

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)
FR480858A 1915-02-11 1916-02-04 Thermal microphone Expired FR480858A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
FR480858A true FR480858A (en) 1916-10-04

Family

ID=32668494

Family Applications (1)

Application Number Title Priority Date Filing Date
FR480858A Expired FR480858A (en) 1915-02-11 1916-02-04 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
DK21413C (en) 1916-08-07
GB191505837A (en) 1916-04-19
AT76294B (en) 1919-04-25

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