FR722274A - Procédé de protection contre les bruits - Google Patents

Procédé de protection contre les bruits

Info

Publication number
FR722274A
FR722274A FR722274DA FR722274A FR 722274 A FR722274 A FR 722274A FR 722274D A FR722274D A FR 722274DA FR 722274 A FR722274 A FR 722274A
Authority
FR
France
Prior art keywords
protection method
noise protection
noise
protection
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
Henri Coanda
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 FR722274A publication Critical patent/FR722274A/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
    • H04R1/32—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only
    • H04R1/40—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers
    • H04R1/406—Arrangements for obtaining desired frequency or directional characteristics for obtaining desired directional characteristic only by combining a number of identical transducers microphones

Landscapes

  • Health & Medical Sciences (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
FR722274D 1930-10-21 1930-10-21 Procédé de protection contre les bruits Expired FR722274A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR722274T 1930-10-21

Publications (1)

Publication Number Publication Date
FR722274A true FR722274A (fr) 1932-03-15

Family

ID=9100688

Family Applications (1)

Application Number Title Priority Date Filing Date
FR722274D Expired FR722274A (fr) 1930-10-21 1930-10-21 Procédé de protection contre les bruits

Country Status (1)

Country Link
FR (1) FR722274A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013076137A1 (fr) 2011-11-25 2013-05-30 Renault S.A.S. Procede et dispositif de controle d'un systeme de reduction active de bruit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013076137A1 (fr) 2011-11-25 2013-05-30 Renault S.A.S. Procede et dispositif de controle d'un systeme de reduction active de bruit

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