FR938802A - Dispositif de transmission de signaux - Google Patents

Dispositif de transmission de signaux

Info

Publication number
FR938802A
FR938802A FR938802DA FR938802A FR 938802 A FR938802 A FR 938802A FR 938802D A FR938802D A FR 938802DA FR 938802 A FR938802 A FR 938802A
Authority
FR
France
Prior art keywords
transmission device
signal transmission
signal
transmission
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.)
AT&T Corp
Original Assignee
Western Electric Co Inc
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 Western Electric Co Inc filed Critical Western Electric Co Inc
Application granted granted Critical
Publication of FR938802A publication Critical patent/FR938802A/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
    • H04R21/021—Microphones with granular resistance material
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Measuring Fluid Pressure (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
FR938802D 1943-12-28 1946-11-19 Dispositif de transmission de signaux Expired FR938802A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US515880A US2429988A (en) 1943-12-28 1943-12-28 Temperature compensated microphone

Publications (1)

Publication Number Publication Date
FR938802A true FR938802A (fr) 1948-10-26

Family

ID=24053153

Family Applications (1)

Application Number Title Priority Date Filing Date
FR938802D Expired FR938802A (fr) 1943-12-28 1946-11-19 Dispositif de transmission de signaux

Country Status (6)

Country Link
US (1) US2429988A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE468390A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH (1) CH258724A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES175771A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR938802A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB590572A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2532741A (en) * 1947-10-31 1950-12-05 Bell Telephone Labor Inc Microphone with opposite electrodes being of varying and constant curvature
NL70196C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1947-10-31
US2585052A (en) * 1948-04-23 1952-02-12 Int Standard Electric Corp Granule type acoustic transducer
NL111663C (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1956-10-11
DE1230858B (de) * 1960-06-22 1966-12-22 Siemens Ag Membran fuer einen elektroakustischen Wandler

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1570120A (en) * 1923-12-06 1926-01-19 Western Electric Co Telephone device
US1603300A (en) * 1924-09-02 1926-10-19 Western Electric Co Telephone transmitter
US2069242A (en) * 1933-01-19 1937-02-02 George A Graham Electroacoustic energy converting system
BE402491A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1933-05-11
US2179733A (en) * 1934-11-27 1939-11-14 Siemens Brothers & Co Ltd Microphone

Also Published As

Publication number Publication date
US2429988A (en) 1947-11-04
GB590572A (en) 1947-07-22
BE468390A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CH258724A (fr) 1948-12-15
ES175771A1 (es) 1947-01-01

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