FR977486A - Perfectionnements aux microphones - Google Patents

Perfectionnements aux microphones

Info

Publication number
FR977486A
FR977486A FR977486DA FR977486A FR 977486 A FR977486 A FR 977486A FR 977486D A FR977486D A FR 977486DA FR 977486 A FR977486 A FR 977486A
Authority
FR
France
Prior art keywords
refinements
microphone
microphone refinements
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)
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.)
Mersen SA
Original Assignee
Carbone Lorraine SA
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 Carbone Lorraine SA filed Critical Carbone Lorraine SA
Application granted granted Critical
Publication of FR977486A publication Critical patent/FR977486A/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
    • H04R21/028—Microphones with a fluid as resistance material

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR977486D 1942-07-20 1942-07-20 Perfectionnements aux microphones Expired FR977486A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR977486T 1942-07-20

Publications (1)

Publication Number Publication Date
FR977486A true FR977486A (fr) 1951-04-02

Family

ID=9519743

Family Applications (1)

Application Number Title Priority Date Filing Date
FR977486D Expired FR977486A (fr) 1942-07-20 1942-07-20 Perfectionnements aux microphones

Country Status (2)

Country Link
BE (1) BE447229A (pm)
FR (1) FR977486A (pm)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027166A3 (en) * 1998-11-02 2000-10-26 Sarnoff Corp Transducer concepts for hearing aids and other devices

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000027166A3 (en) * 1998-11-02 2000-10-26 Sarnoff Corp Transducer concepts for hearing aids and other devices

Also Published As

Publication number Publication date
BE447229A (pm)

Similar Documents

Publication Publication Date Title
FR939369A (fr) Perfectionnements aux microphones directionnels
FR927072A (fr) Instrument de téléphone
FR933989A (fr) Perfectionnements aux microphones
FR977486A (fr) Perfectionnements aux microphones
FR938203A (fr) Perfectionnements aux câbles
CH270405A (de) Mikrotelephon.
FR57814E (fr) Améliorations apportées aux microphones
FR899833A (fr) Montage de microphone
FR892903A (fr) Haut-parleur
FR52265E (fr) Perfectionnement applicable aux microphones de téléphone
CH250533A (de) Körnermikrophon.
FR884635A (fr) Perfectionnements aux écrémeuses
FR878313A (fr) Perfectionnements aux hauts-parleurs
FR890072A (fr) Microphone
FR890535A (fr) Perfectionnements aux barbins
FR927813A (fr) Perfectionnements aux pulvérisateurs
FR994075A (fr) Microphone
FR899711A (fr) Perfectionnements aux diaphragmes de haut-parleurs
CA405345A (en) Microphone
FR954137A (fr) Perfectionnements aux embrayages
FR884444A (fr) Perfectionnements aux filtres
CA403623A (en) Sound camera
FR938624A (fr) Perfectionnements aux lampes-éclairs
ES159904A3 (es) Un micrófono
FR889886A (fr) Perfectionnements aux enveloppes