шу өлшегіші

шу өлшегіші

A sound level meter measures sound pressure level. It has several frequency-weighted decibel (dB) scales (A, B, C) to cover different portions of the range of measured loudness. Sound level meters indicate RMS sound, unless the measurements are qualified as instantaneous or peak sound level.

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Secteur d’activité/Domaine : Matériel électrique
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