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COEFFICIENT REDUCTION NIVEAU INTENSITE BRUIT [1 record]
Record 1 - internal organization data 2010-04-14
Record 1, English
Record 1, Subject field(s)
- Acoustics (Physics)
- Noise Pollution
- Building Insulation and Acoustical Design
Record 1, Main entry term, English
- noise-reduction coefficient
1, record 1, English, noise%2Dreduction%20coefficient
correct
Record 1, Abbreviations, English
- NRC 2, record 1, English, NRC
correct
Record 1, Synonyms, English
- noise reduction coefficient 3, record 1, English, noise%20reduction%20coefficient
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
For ordinary noise quieting, the average of absorption coefficients measured at frequencies of 250,500, 1,000 and 2,000 eps, called the noise-reduction coefficient, may be used. ... In making quantitative estimates of noise reduction, the total of sound absorption of the room boundaries may be computed by multiplying the noise-reduction coefficient of each different material present by the total exposed area of that material and summing up the resulting products. 4, record 1, English, - noise%2Dreduction%20coefficient
Record 1, French
Record 1, Domaine(s)
- Acoustique (Physique)
- Pollution par le bruit
- Isolation et acoustique architecturale
Record 1, Main entry term, French
- coefficient de réduction du bruit
1, record 1, French, coefficient%20de%20r%C3%A9duction%20du%20bruit
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- coefficient de réduction du niveau de bruit 2, record 1, French, coefficient%20de%20r%C3%A9duction%20du%20niveau%20de%20bruit
proposal, masculine noun
- coefficient de réduction du son 3, record 1, French, coefficient%20de%20r%C3%A9duction%20du%20son
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 OBS
Évaluation de la réduction du niveau du bruit. [...] Lorsqu'on ajoute des matériaux absorbants dans une pièce, il n'y a pas de changements dans le champ direct. Il n'y a réduction du niveau des bruits que dans le champ réverbéré. Cette réduction augmente avec le rapport A/Ao des aires d'absorption équivalentes de la salle après et avant traitement. La loi de réduction est une loi logarithmique, comme toutes les lois de l'acoustique. En première approximation, la réduction du niveau de bruit exprimée en décibels est égale à 10 log A/Ao. 4, record 1, French, - coefficient%20de%20r%C3%A9duction%20du%20bruit
Record 1, Key term(s)
- coefficient de réduction de l'intensité du bruit
- coefficient de réduction du niveau d'intensité du bruit
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Acústica (Física)
- Contaminación acústica
- Aislamiento y acústica arquitectónicos
Record 1, Main entry term, Spanish
- coeficiente de reducción de ruidos
1, record 1, Spanish, coeficiente%20de%20reducci%C3%B3n%20de%20ruidos
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Coeficiente de absorción de un material a 150 Hz, 500 Hz, 1 KHz y 2 KHz. 1, record 1, Spanish, - coeficiente%20de%20reducci%C3%B3n%20de%20ruidos
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