ZA754920B - Improvements in or relating to carbon microphone capsules - Google Patents

Improvements in or relating to carbon microphone capsules

Info

Publication number
ZA754920B
ZA754920B ZA00754920A ZA754920A ZA754920B ZA 754920 B ZA754920 B ZA 754920B ZA 00754920 A ZA00754920 A ZA 00754920A ZA 754920 A ZA754920 A ZA 754920A ZA 754920 B ZA754920 B ZA 754920B
Authority
ZA
South Africa
Prior art keywords
relating
microphone capsules
carbon microphone
carbon
capsules
Prior art date
Application number
ZA00754920A
Other languages
English (en)
Inventor
J Seidlmeyer
E Mueller
Original Assignee
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 Ag filed Critical Siemens Ag
Publication of ZA754920B publication Critical patent/ZA754920B/xx

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
ZA00754920A 1974-08-19 1975-07-30 Improvements in or relating to carbon microphone capsules ZA754920B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742439688 DE2439688C2 (de) 1974-08-19 1974-08-19 Feuchtigkeitsgeschuetze kohlemikrofonkapsel

Publications (1)

Publication Number Publication Date
ZA754920B true ZA754920B (en) 1976-07-28

Family

ID=5923539

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA00754920A ZA754920B (en) 1974-08-19 1975-07-30 Improvements in or relating to carbon microphone capsules

Country Status (3)

Country Link
BE (1) BE832549A (fr)
DE (1) DE2439688C2 (fr)
ZA (1) ZA754920B (fr)

Also Published As

Publication number Publication date
DE2439688C2 (de) 1976-09-30
DE2439688B1 (de) 1976-02-12
BE832549A (fr) 1976-02-19

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