FR2405609A1 - Procede de sonorisation de lieux et locaux publics - Google Patents

Procede de sonorisation de lieux et locaux publics

Info

Publication number
FR2405609A1
FR2405609A1 FR7730047A FR7730047A FR2405609A1 FR 2405609 A1 FR2405609 A1 FR 2405609A1 FR 7730047 A FR7730047 A FR 7730047A FR 7730047 A FR7730047 A FR 7730047A FR 2405609 A1 FR2405609 A1 FR 2405609A1
Authority
FR
France
Prior art keywords
broadcast
public address
output sound
control system
detected level
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.)
Withdrawn
Application number
FR7730047A
Other languages
English (en)
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.)
GAMELIN THIERRY
Original Assignee
GAMELIN THIERRY
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 GAMELIN THIERRY filed Critical GAMELIN THIERRY
Priority to FR7730047A priority Critical patent/FR2405609A1/fr
Publication of FR2405609A1 publication Critical patent/FR2405609A1/fr
Withdrawn legal-status Critical Current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
    • H04R27/00—Public address systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/32—Automatic control in amplifiers having semiconductor devices the control being dependent upon ambient noise level or sound level

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)

Abstract

On détecte, au moyen d'au moins un capteur 1, le niveau des ondes sonores présentes à l'intérieur et/ou à l'extérieur de ces locaux publics, on diffuse une information sonore, et on commande l'intensité sonore M de l'information diffusée de manière qu'elle varie globalement dans le même sens que le niveau sonore B d'une partie au moins des ondes détectées. Ce procédé s'applique à la sonorisation des véhicules utilisés pour les transports en commun (rames de métro, autobus, cars, trains etc.), ainsi que des locaux permettant leur accès.
FR7730047A 1977-10-06 1977-10-06 Procede de sonorisation de lieux et locaux publics Withdrawn FR2405609A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7730047A FR2405609A1 (fr) 1977-10-06 1977-10-06 Procede de sonorisation de lieux et locaux publics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7730047A FR2405609A1 (fr) 1977-10-06 1977-10-06 Procede de sonorisation de lieux et locaux publics

Publications (1)

Publication Number Publication Date
FR2405609A1 true FR2405609A1 (fr) 1979-05-04

Family

ID=9196157

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7730047A Withdrawn FR2405609A1 (fr) 1977-10-06 1977-10-06 Procede de sonorisation de lieux et locaux publics

Country Status (1)

Country Link
FR (1) FR2405609A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513839A1 (fr) * 1981-09-28 1983-04-01 Carpentier Claude Perfectionnement aux dispositifs permettant l'ajustement du niveau des sources sonores utiles dans les milieux a bruyance variable
FR2529727A1 (fr) * 1982-06-30 1984-01-06 Radiotechnique Dispositif de reglage automatique du niveau sonore d'une source de sons utiles en fonction du bruit ambiant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2513839A1 (fr) * 1981-09-28 1983-04-01 Carpentier Claude Perfectionnement aux dispositifs permettant l'ajustement du niveau des sources sonores utiles dans les milieux a bruyance variable
FR2529727A1 (fr) * 1982-06-30 1984-01-06 Radiotechnique Dispositif de reglage automatique du niveau sonore d'une source de sons utiles en fonction du bruit ambiant

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Legal Events

Date Code Title Description
ST Notification of lapse