FR716610A - Dispositif de microphone - Google Patents

Dispositif de microphone

Info

Publication number
FR716610A
FR716610A FR716610DA FR716610A FR 716610 A FR716610 A FR 716610A FR 716610D A FR716610D A FR 716610DA FR 716610 A FR716610 A FR 716610A
Authority
FR
France
Prior art keywords
microphone device
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
Other languages
English (en)
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR716610A publication Critical patent/FR716610A/fr
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
    • H04R21/026—Microphones in which the sound is perpendicular to the current crossing the transducer material
FR716610D 1930-05-29 1931-05-06 Dispositif de microphone Expired FR716610A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE695257T 1930-05-29

Publications (1)

Publication Number Publication Date
FR716610A true FR716610A (fr) 1931-12-24

Family

ID=6626463

Family Applications (1)

Application Number Title Priority Date Filing Date
FR716610D Expired FR716610A (fr) 1930-05-29 1931-05-06 Dispositif de microphone

Country Status (3)

Country Link
AT (1) AT129674B (fr)
DE (1) DE695257C (fr)
FR (1) FR716610A (fr)

Also Published As

Publication number Publication date
DE695257C (de) 1940-08-21
AT129674B (de) 1932-09-10

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