FR495746A - Improvements to sound reproduction systems - Google Patents

Improvements to sound reproduction systems

Info

Publication number
FR495746A
FR495746A FR495746DA FR495746A FR 495746 A FR495746 A FR 495746A FR 495746D A FR495746D A FR 495746DA FR 495746 A FR495746 A FR 495746A
Authority
FR
France
Prior art keywords
sound reproduction
reproduction systems
systems
sound
reproduction
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
French (fr)
Inventor
Geoffrey Maxwell Boumphrey
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
Application granted granted Critical
Publication of FR495746A publication Critical patent/FR495746A/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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR495746D 1918-02-20 1919-02-13 Improvements to sound reproduction systems Expired FR495746A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB495746X 1918-02-20

Publications (1)

Publication Number Publication Date
FR495746A true FR495746A (en) 1919-10-16

Family

ID=1531257

Family Applications (1)

Application Number Title Priority Date Filing Date
FR495746D Expired FR495746A (en) 1918-02-20 1919-02-13 Improvements to sound reproduction systems

Country Status (1)

Country Link
FR (1) FR495746A (en)

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