GB154335A - Improvements in or relating to microphones - Google Patents

Improvements in or relating to microphones

Info

Publication number
GB154335A
GB154335A GB2098319A GB2098319A GB154335A GB 154335 A GB154335 A GB 154335A GB 2098319 A GB2098319 A GB 2098319A GB 2098319 A GB2098319 A GB 2098319A GB 154335 A GB154335 A GB 154335A
Authority
GB
United Kingdom
Prior art keywords
diaphragm
pellets
block
cavities
diaphragms
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
GB2098319A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB2098319A priority Critical patent/GB154335A/en
Priority to FR520825D priority patent/FR520825A/fr
Publication of GB154335A publication Critical patent/GB154335A/en
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

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
GB2098319A 1919-08-26 1919-08-26 Improvements in or relating to microphones Expired GB154335A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2098319A GB154335A (en) 1919-08-26 1919-08-26 Improvements in or relating to microphones
FR520825D FR520825A (fr) 1919-08-26 1920-07-21 Perfectionnement dans les microphones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2098319A GB154335A (en) 1919-08-26 1919-08-26 Improvements in or relating to microphones

Publications (1)

Publication Number Publication Date
GB154335A true GB154335A (en) 1920-11-26

Family

ID=10155165

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2098319A Expired GB154335A (en) 1919-08-26 1919-08-26 Improvements in or relating to microphones

Country Status (2)

Country Link
FR (1) FR520825A (fr)
GB (1) GB154335A (fr)

Also Published As

Publication number Publication date
FR520825A (fr) 1921-07-02

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