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A-scale reading [1 record]

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Record 1 2012-04-12

English

Subject field(s)
  • Acoustics (Physics)
  • Audio Technology
  • Noise Pollution
CONT

Usually, the sound level meter contains filters and circuitry to bias the readings so that the instrument responds more like the human ear - "deaf" to low frequencies and most sensitive to the mid-frequencies ... Such readings are called A-scale readings. Most noise level readings ... are A-scale readings (often expressed as dBA).

French

Domaine(s)
  • Acoustique (Physique)
  • Électroacoustique
  • Pollution par le bruit
CONT

[...] les acousticiens ont établi trois courbes de pondération, dites courbes A, B, C [...]. Ces courbes correspondent à des réseaux pondérateurs que l'on intercale dans le circuit de mesure [du sonomètre] et qui affaiblissent [...] les fréquences graves et aiguës [...]; on obtient ainsi les lectures en "gamme A, B ou C", ou encore en décibels A, B ou C.

Spanish

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