FR545031A - Machine parlante - Google Patents

Machine parlante

Info

Publication number
FR545031A
FR545031A FR545031DA FR545031A FR 545031 A FR545031 A FR 545031A FR 545031D A FR545031D A FR 545031DA FR 545031 A FR545031 A FR 545031A
Authority
FR
France
Prior art keywords
talking machine
talking
machine
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
Reinhard Mosmann
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 filed Critical
Application granted granted Critical
Publication of FR545031A publication Critical patent/FR545031A/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)
FR545031D 1921-12-23 1921-12-23 Machine parlante Expired FR545031A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR545031T 1921-12-23

Publications (1)

Publication Number Publication Date
FR545031A true FR545031A (fr) 1922-10-04

Family

ID=8932699

Family Applications (1)

Application Number Title Priority Date Filing Date
FR545031D Expired FR545031A (fr) 1921-12-23 1921-12-23 Machine parlante

Country Status (1)

Country Link
FR (1) FR545031A (fr)

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