FR14157E - Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments - Google Patents

Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments

Info

Publication number
FR14157E
FR14157E FR14157A FR14157DA FR14157E FR 14157 E FR14157 E FR 14157E FR 14157 A FR14157 A FR 14157A FR 14157D A FR14157D A FR 14157DA FR 14157 E FR14157 E FR 14157E
Authority
FR
France
Prior art keywords
megaphones
gramophones
phonographs
horns
amplifier
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
FR14157A
Other languages
French (fr)
Inventor
Frederick Albert Boyd
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
Publication date
Application granted granted Critical
Publication of FR14157E publication Critical patent/FR14157E/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
    • 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 
    • H04R1/225—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired frequency characteristic only  for telephonic receivers
    • 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
    • H04R1/08—Mouthpieces; Microphones; Attachments therefor
    • H04R1/083—Special constructions of mouthpieces
    • 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)
FR14157A Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments Expired FR14157E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR14157T

Publications (1)

Publication Number Publication Date
FR14157E true FR14157E (en) 1911-09-27

Family

ID=8646665

Family Applications (2)

Application Number Title Priority Date Filing Date
FR14157A Expired FR14157E (en) Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments
FR420382A Expired FR420382A (en) 1910-09-14 Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR420382A Expired FR420382A (en) 1910-09-14 Improvements to amplifier horns for phonographs, gramophones, megaphones and other similar instruments

Country Status (1)

Country Link
FR (2) FR420382A (en)

Also Published As

Publication number Publication date
FR420382A (en) 1911-01-28

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