FR434234A - Microphone with several fixed electrodes - Google Patents

Microphone with several fixed electrodes

Info

Publication number
FR434234A
FR434234A FR434234A FR434234DA FR434234A FR 434234 A FR434234 A FR 434234A FR 434234 A FR434234 A FR 434234A FR 434234D A FR434234D A FR 434234DA FR 434234 A FR434234 A FR 434234A
Authority
FR
France
Prior art keywords
microphone
fixed electrodes
several fixed
several
electrodes
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
FR434234A
Other languages
French (fr)
Inventor
Carl Emil Egner
Johan Gunnar Holmstroem
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of FR434234A publication Critical patent/FR434234A/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
    • H04R21/00—Variable-resistance transducers
    • H04R21/02—Microphones
    • H04R21/021—Microphones with granular resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR434234A 1911-10-06 1911-09-14 Microphone with several fixed electrodes Expired FR434234A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191122049T 1911-10-06

Publications (1)

Publication Number Publication Date
FR434234A true FR434234A (en) 1912-01-27

Family

ID=32567591

Family Applications (1)

Application Number Title Priority Date Filing Date
FR434234A Expired FR434234A (en) 1911-10-06 1911-09-14 Microphone with several fixed electrodes

Country Status (2)

Country Link
FR (1) FR434234A (en)
GB (1) GB191122049A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015077099A1 (en) * 2013-11-21 2015-05-28 Ghaffari Mohsen Tunable ribbon microphone

Also Published As

Publication number Publication date
GB191122049A (en) 1912-05-09

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