TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
A-weighted decibel [1 record]
Record 1 - internal organization data 2003-09-09
Record 1, English
Record 1, Subject field(s)
- Telephone Metering
- Acoustics (Physics)
- Noise Pollution
Record 1, Main entry term, English
- A-weighted decibel
1, record 1, English, A%2Dweighted%20decibel
correct
Record 1, Abbreviations, English
- dBA 2, record 1, English, dBA
correct
- dB(A) 3, record 1, English, dB%28A%29
correct
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
Sound levels are measured in A-weighted decibels which adjust sound pressure to conform with the frequency response of the human ear. 4, record 1, English, - A%2Dweighted%20decibel
Record number: 1, Textual support number: 1 OBS
decibels relative to 2x10 (-5th power) Pa and measured as per ANSI Standard S1.4 using the A weighting scale. 5, record 1, English, - A%2Dweighted%20decibel
Record number: 1, Textual support number: 2 CONT
The unit of measurement of environmental noise is the decibel (dB). To better approximate the range of sensitivity of the human ear to sounds of different frequencies, the A-weighted decibel scale was devised. Because the human ear is less sensitive to low-frequency sounds, the A-scale de-emphasizes these frequencies by incorporating frequency weighting of the sound signal. When the A-scale is used, the decibel levels are shown as dBA. On this scale, the range of human hearing extends from about 3 dBA to about 140 dBA. A 10-dBA increase is perceived by most people as a doubling of the sound level. The smallest change that can be heard is about 2 to 3 dBA. 2, record 1, English, - A%2Dweighted%20decibel
Record 1, French
Record 1, Domaine(s)
- Téléphonométrie
- Acoustique (Physique)
- Pollution par le bruit
Record 1, Main entry term, French
- décibel A
1, record 1, French, d%C3%A9cibel%20A
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- décibel pondéré en gamme A 2, record 1, French, d%C3%A9cibel%20pond%C3%A9r%C3%A9%20en%20gamme%20A
correct, masculine noun
- dB(A) 3, record 1, French, dB%28A%29
correct, masculine noun
- dBA 4, record 1, French, dBA
correct, masculine noun
- dB(A) 3, record 1, French, dB%28A%29
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
[...] les acousticiens ont établi trois courbes de pondération, dites courbes A, B, C, qui permettent, à partir de la mesure objective du bruit, d'évaluer la sensation subjective qui s'y rapporte. Ces courbes correspondent à des réseaux pondérateurs [...]. Dans la pratique, ces réseaux sont incorporés au sonomètre et peuvent être mis en circuit à l'aide d'un commutateur; on obtient ainsi les lectures dites en «gamme A, B ou C», ou encore en décibels A, B, ou C. 5, record 1, French, - d%C3%A9cibel%20A
Record number: 1, Textual support number: 2 CONT
Le décibel pondéré en gamme A(dBA) est l'unité de mesure normale du son. Comme l'intensité du bruit augmente de façon exponentielle, une faible hausse du niveau dBA peut entraîner une augmentation considérable du bruit perçu. 6, record 1, French, - d%C3%A9cibel%20A
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Telefonometría
- Acústica (Física)
- Contaminación acústica
Record 1, Main entry term, Spanish
- decibelio A
1, record 1, Spanish, decibelio%20A
correct, masculine noun
Record 1, Abbreviations, Spanish
- dBA 2, record 1, Spanish, dBA
correct, masculine noun
Record 1, Synonyms, Spanish
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Unidad de medida del ruido basada en la Curva Standard de Ponderación A, que es la que más se aproxima en sus respuestas ante diferentes frecuencias a la forma de captar el sonido el oído humano. 3, record 1, Spanish, - decibelio%20A
Record number: 1, Textual support number: 1 CONT
El decibelio A (dBA) indica que en la medición acústica se ha tenido en cuenta la ponderación A según las frecuencias del sonido. El decibelio A ofrece una valoración del sonido teniendo en cuenta la sensibilidad propia del oído humano. 2, record 1, Spanish, - decibelio%20A
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