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NOMBRE EVALUATION BRUIT [1 record]

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Alphabetical list of terms

Record 1 2003-07-18

English

Subject field(s)
  • Acoustics (Physics)
  • Building Insulation and Acoustical Design
  • Noise Pollution
DEF

noise rating number: The perceived noise level of the noise that can be tolerated under specified conditions; for example, the noise rating number of a bedroom is 25, that of a workshop is 65.

DEF

Sound Rating Number. A unit based on ARI (Air Conditioning, Refrigeration Institute) tests. Average sound ratings range between 74 to 80db. The lower the SRN number the quieter the unit.

CONT

noise-rating curves. Sets of graph curves that relate sound levels in octave bands to their acceptability for particular applications. When an octave-band analysis is plotted on a graph of noise-rating curves, the number of the curve which is reached by the level in one or more bands is the noise-rating number (NRN) of the noise.

OBS

Decibel units are used more commonly than noise-rating numbers.

OBS

The term "sound(-)rating number" seems to be restricted to the air conditioning and refrigeration field.

Key term(s)
  • sound-rating number

French

Domaine(s)
  • Acoustique (Physique)
  • Isolation et acoustique architecturale
  • Pollution par le bruit
CONT

À chaque courbe est affecté un nombre qui est le niveau d'intensité physique du bruit dont le spectre est limité à une bande de fréquence d'une octave centrée sur 1 000 Hz. Ces nombres sont appelés nombres d'évaluation des bruits (en anglais noise rating numbers). Ils servent à fixer des limites de gêne pour des bruits divers.

Key term(s)
  • nombre d'évaluation du bruit
  • indice d’évaluation des bruits

Spanish

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