IT1040482B - CHARCOAL MICROPHONE CAPSULE PROTECTED FROM HUMIDITY - Google Patents

CHARCOAL MICROPHONE CAPSULE PROTECTED FROM HUMIDITY

Info

Publication number
IT1040482B
IT1040482B IT26110/75A IT2611075A IT1040482B IT 1040482 B IT1040482 B IT 1040482B IT 26110/75 A IT26110/75 A IT 26110/75A IT 2611075 A IT2611075 A IT 2611075A IT 1040482 B IT1040482 B IT 1040482B
Authority
IT
Italy
Prior art keywords
charcoal
humidity
microphone capsule
capsule protected
protected
Prior art date
Application number
IT26110/75A
Other languages
Italian (it)
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
Priority claimed from DE19742439720 external-priority patent/DE2439720C2/en
Priority claimed from DE19742439688 external-priority patent/DE2439688C2/en
Application filed by Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of IT1040482B publication Critical patent/IT1040482B/en

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
    • 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)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
IT26110/75A 1974-08-19 1975-08-05 CHARCOAL MICROPHONE CAPSULE PROTECTED FROM HUMIDITY IT1040482B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19742439720 DE2439720C2 (en) 1974-08-19 1974-08-19 MOISTURE PROTECTED CHARCOAL MICROPHONE CAPSULE
DE19742439688 DE2439688C2 (en) 1974-08-19 1974-08-19 MOISTURE PROTECTIVE CHARCOAL MICROPHONE CAPSULE

Publications (1)

Publication Number Publication Date
IT1040482B true IT1040482B (en) 1979-12-20

Family

ID=25767572

Family Applications (1)

Application Number Title Priority Date Filing Date
IT26110/75A IT1040482B (en) 1974-08-19 1975-08-05 CHARCOAL MICROPHONE CAPSULE PROTECTED FROM HUMIDITY

Country Status (9)

Country Link
AR (1) AR203525A1 (en)
AT (1) AT338896B (en)
BR (1) BR7505266A (en)
CH (1) CH591197A5 (en)
FI (1) FI752160A (en)
FR (1) FR2282766A1 (en)
GB (1) GB1510870A (en)
IT (1) IT1040482B (en)
SE (1) SE409538B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108574917A (en) * 2018-05-28 2018-09-25 歌尔股份有限公司 Electronic equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108574917A (en) * 2018-05-28 2018-09-25 歌尔股份有限公司 Electronic equipment
CN108574917B (en) * 2018-05-28 2021-03-02 歌尔股份有限公司 Electronic device

Also Published As

Publication number Publication date
BR7505266A (en) 1976-08-03
FR2282766A1 (en) 1976-03-19
FI752160A (en) 1976-02-20
SE7509277L (en) 1976-02-20
SE409538B (en) 1979-08-20
ATA550075A (en) 1977-01-15
GB1510870A (en) 1978-05-17
CH591197A5 (en) 1977-09-15
AR203525A1 (en) 1975-09-15
AT338896B (en) 1977-09-26

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