TERMIUM Plus®

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FREE SOUND FIELD [5 records]

Record 1 2010-04-14

English

Subject field(s)
  • Acoustics (Physics)
  • Audio Technology
DEF

An isotropic, homogeneous sound field that is free from all bounding surfaces.

CONT

In a free field, a sound wave decreases in intensity by a factor equal to the square of the distance from the source.

OBS

A nonreflecting space required for measurement of the acoustic response of microphones and loudspeakers.

French

Domaine(s)
  • Acoustique (Physique)
  • Électroacoustique
DEF

Champ acoustique dans lequel l'effet des conditions aux limites est négligeable. [Définition normalisée par l'AFNOR et reproduite avec son autorisation.]

OBS

champ acoustique libre : terme normalisé par l'AFNOR.

Spanish

Campo(s) temático(s)
  • Acústica (Física)
  • Electroacústica
Save record 1

Record 2 2007-01-15

English

Subject field(s)
  • Acoustics (Physics)
DEF

A sound field that is free above a reflecting plane.

French

Domaine(s)
  • Acoustique (Physique)
DEF

Champ libre au-dessus d'une surface réfléchissante.

Spanish

Save record 2

Record 3 2006-06-15

English

Subject field(s)
  • Acoustics (Physics)
  • General Scientific and Technical Vocabulary
CONT

when sound is radiated from a source in free field, the spherical sound wave moves at about 1, 100 ft. per second.

French

Domaine(s)
  • Acoustique (Physique)
  • Vocabulaire technique et scientifique général
CONT

le niveau sonore varie constamment, c'est par exemple le bruit rayonné par un compresseur dont la charge varie.

Spanish

Campo(s) temático(s)
  • Acústica (Física)
  • Vocabulario técnico y científico general
Save record 3

Record 4 2003-02-03

English

Subject field(s)
  • Audio Technology
DEF

Of a microphone, for a specified frequency and a specified direction of sound, the ratio of the output e. m. f. to the sound pressure in the undisturbed free field.

French

Domaine(s)
  • Électroacoustique
DEF

Pour un microphone , à une fréquence et pour une direction d'incidence du son données quotient de la f.e.m. aux bornes par la pression acoustique dans le champ libre à l'emplacement du microphone.

Spanish

Campo(s) temático(s)
  • Electroacústica
Save record 4

Record 5 2000-01-07

English

Subject field(s)
  • Acoustics (Physics)
  • Electrical Engineering
CONT

The CEL-414 is available to meet those requirements where a precision sound level meter is required. A large easy to read liquid crystal display enables the noise levels to be viewed and the slim light weight design will appeal to new and experienced users alike. The CEL-414 can be supplied in European format with the standard 1/2" microphone capsule CEL-192/2F. This is a free field microphone allowing measurements from 20 to 140 dB to be displayed to the relevant IEC requirements. The optional CEL-192/2R capsule is a random incidence microphone fulfilling the requirements of the ANSI specifications. The CEL-414 is available as an A version with the A and Lin frequency weightings or as a C version with the A and C frequency weightings where simple hand held operation is required.

OBS

precision sound level meter: term standardized by the CSA. Material reproduced with the permission of the copyright holder, the Canadian Standards Association (CSA), 178 Rexdale Blvd., Toronto, Ontario, Canada M9W 1R3. However, CSA shall not be responsible for the manner in which the information is presented, nor for any interpretations thereof. This CSA material may not have been updated to reflect amendments subsequently made to the original content. For further information, contact CSA.

French

Domaine(s)
  • Acoustique (Physique)
  • Électrotechnique
CONT

Sonomètres de précision adaptés à la mesure acoustique architecturale et d'environnement. Pondération A et C, interface série pour récupération des données. Utilisation en sonomètre et dosimètre.

Spanish

Save record 5

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