FR14157E - Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues - Google Patents

Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues

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
English (en)
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/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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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; ELECTRIC HEARING AIDS; 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 Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues Expired FR14157E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR14157T

Publications (1)

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

Family

ID=8646665

Family Applications (2)

Application Number Title Priority Date Filing Date
FR14157A Expired FR14157E (fr) Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues
FR420382A Expired FR420382A (fr) 1910-09-14 Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues

Family Applications After (1)

Application Number Title Priority Date Filing Date
FR420382A Expired FR420382A (fr) 1910-09-14 Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues

Country Status (1)

Country Link
FR (2) FR420382A (fr)

Also Published As

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

Similar Documents

Publication Publication Date Title
FR14157E (fr) Perfectionnements aux pavillons amplificateurs pour phonographes, gramophones, mégaphones et autres instruments analogues
AU1579209B (en) Improvements relating to sound reproducing and recording instruments
AU1579209A (en) Improvements relating to sound reproducing and recording instruments
AU669912A (en) Improvements relating to sound reproducing and recording instruments
FR481895A (fr) Perfectionnements aux gramophones, aux phonographes et aux instruments analogues enregistrant ou reproduisant le son
DK14980C (da) Stemmeapparat til Musikinstrumenter.
AU669912B (en) Improvements relating to sound reproducing and recording instruments
FR430490A (fr) Perfectionnements aux trompes sonores et autres appareils avertisseurs
FR440830A (fr) Perfectionnements aux signaux sonores sous-marins
FR435525A (fr) Perfectionnements aux enregistreurs de gramophones et autres machines parlantes
FR447856A (fr) Perfectionnements aux phonographes, gramophones, et autres appareils enregistrant et reproduisant les sons
FR467681A (fr) Organe acoustique pour instruments de musique et phonographes
FR451298A (fr) Perfectionnements aux gramophones
FR436365A (fr) Perfectionnements aux instruments musicaux combinés
AU1130608B (en) Improved horn for gramophones phonographs and suchlike instruments
AU1130608A (en) Improved horn for gramophones phonographs and suchlike instruments
FR469746A (fr) Perfectionnements aux reproducteurs pour gramophones, phonographes et autres machines analogues
CH44854A (de) Schalltrichter für Grammophone und Phonographen
FR479222A (fr) Perfectionnements aux feuilles enregistreuses perforées pour pianos mécaniques et autres instruments semblables
CA157600A (fr) Registre de sons
AU305711A (en) Combined piano player and phonograph
CA150109A (fr) Instrument a reproduire les sons
FR425595A (fr) Perfectionnements aux phonographes
FR362926A (fr) Perfectionnements apportés aux gramophones, phonographes et autres instruments analogues
FR435523A (fr) Perfectionnements aux instruments de musique mécaniques