FR498687A - Bras acoustique pour gramophone - Google Patents

Bras acoustique pour gramophone

Info

Publication number
FR498687A
FR498687A FR498687DA FR498687A FR 498687 A FR498687 A FR 498687A FR 498687D A FR498687D A FR 498687DA FR 498687 A FR498687 A FR 498687A
Authority
FR
France
Prior art keywords
gramophone
acoustic arm
acoustic
arm
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)
Inventor
Frederick George Pugh
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 FR498687A publication Critical patent/FR498687A/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
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/20—Arrangements for obtaining desired frequency or directional characteristics
    • H04R1/22—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only 
    • H04R1/30—Combinations of transducers with horns, e.g. with mechanical matching means, i.e. front-loaded horns

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR498687D 1918-02-01 1919-04-26 Bras acoustique pour gramophone Expired FR498687A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB498687X 1918-02-01

Publications (1)

Publication Number Publication Date
FR498687A true FR498687A (fr) 1920-01-20

Family

ID=1533859

Family Applications (1)

Application Number Title Priority Date Filing Date
FR498687D Expired FR498687A (fr) 1918-02-01 1919-04-26 Bras acoustique pour gramophone

Country Status (1)

Country Link
FR (1) FR498687A (fr)

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