FR2174445A5 - - Google Patents

Info

Publication number
FR2174445A5
FR2174445A5 FR7207761A FR7207761A FR2174445A5 FR 2174445 A5 FR2174445 A5 FR 2174445A5 FR 7207761 A FR7207761 A FR 7207761A FR 7207761 A FR7207761 A FR 7207761A FR 2174445 A5 FR2174445 A5 FR 2174445A5
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
FR7207761A
Other languages
French (fr)
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.)
FRARIN PIERRE
Original Assignee
FRARIN PIERRE
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 by FRARIN PIERRE filed Critical FRARIN PIERRE
Priority to FR7207761A priority Critical patent/FR2174445A5/fr
Application granted granted Critical
Publication of FR2174445A5 publication Critical patent/FR2174445A5/fr
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/99—Room acoustics, i.e. forms of, or arrangements in, rooms for influencing or directing sound
    • 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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/323—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only for loudspeakers

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Architecture (AREA)
  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
FR7207761A 1972-02-29 1972-02-29 Expired FR2174445A5 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7207761A FR2174445A5 (ja) 1972-02-29 1972-02-29

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7207761A FR2174445A5 (ja) 1972-02-29 1972-02-29

Publications (1)

Publication Number Publication Date
FR2174445A5 true FR2174445A5 (ja) 1973-10-12

Family

ID=9094713

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7207761A Expired FR2174445A5 (ja) 1972-02-29 1972-02-29

Country Status (1)

Country Link
FR (1) FR2174445A5 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007569A1 (fr) * 1978-07-27 1980-02-06 Antoine Grootaers Enceinte acoustique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0007569A1 (fr) * 1978-07-27 1980-02-06 Antoine Grootaers Enceinte acoustique

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Legal Events

Date Code Title Description
ST Notification of lapse