FR988848A - Perfectionnements aux postes radiophoniques - Google Patents

Perfectionnements aux postes radiophoniques

Info

Publication number
FR988848A
FR988848A FR988848DA FR988848A FR 988848 A FR988848 A FR 988848A FR 988848D A FR988848D A FR 988848DA FR 988848 A FR988848 A FR 988848A
Authority
FR
France
Prior art keywords
radio stations
stations
radio
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
Olivier De Santis
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 FR988848A publication Critical patent/FR988848A/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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/34—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means
    • H04R1/345—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by using a single transducer with sound reflecting, diffracting, directing or guiding means for loudspeakers

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR988848D 1944-01-20 1944-01-20 Perfectionnements aux postes radiophoniques Expired FR988848A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR988848T 1944-01-20

Publications (1)

Publication Number Publication Date
FR988848A true FR988848A (fr) 1951-08-31

Family

ID=9539774

Family Applications (1)

Application Number Title Priority Date Filing Date
FR988848D Expired FR988848A (fr) 1944-01-20 1944-01-20 Perfectionnements aux postes radiophoniques

Country Status (1)

Country Link
FR (1) FR988848A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075666B (de) * 1960-02-18 Siemens Electrogerate Aktiengestll schaft Berlin und München I aut Sprecheranordnung mit praktisch kugel formiger Abstrahlcharakteristik
EP0116421A1 (fr) * 1983-02-04 1984-08-22 George P. Sadorus Assemblage audio déflecteur et photo

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075666B (de) * 1960-02-18 Siemens Electrogerate Aktiengestll schaft Berlin und München I aut Sprecheranordnung mit praktisch kugel formiger Abstrahlcharakteristik
EP0116421A1 (fr) * 1983-02-04 1984-08-22 George P. Sadorus Assemblage audio déflecteur et photo
US4541188A (en) * 1983-02-04 1985-09-17 Talkies International Corp. Reflective audio assembly and picture

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