FR916842A - - Google Patents

Info

Publication number
FR916842A
FR916842A FR916842DA FR916842A FR 916842 A FR916842 A FR 916842A FR 916842D A FR916842D A FR 916842DA FR 916842 A FR916842 A FR 916842A
Authority
FR
France
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
Publication date
Application granted granted Critical
Publication of FR916842A publication Critical patent/FR916842A/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)
FR916842D Expired FR916842A (fr)

Publications (1)

Publication Number Publication Date
FR916842A true FR916842A (fr) 1947-01-28

Family

ID=1557144

Family Applications (1)

Application Number Title Priority Date Filing Date
FR916842D Expired FR916842A (fr)

Country Status (1)

Country Link
FR (1) FR916842A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063387A (en) * 1976-12-27 1977-12-20 Mitchell Thomas R Hanging planter pot speaker enclosure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4063387A (en) * 1976-12-27 1977-12-20 Mitchell Thomas R Hanging planter pot speaker enclosure

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