8. Noise measurement
8.1 Airborne noise
8.1.1 Measuring noise at a given point in space
It is done with a sound pressure meter and uses
a microphone that converts sound pressure into an electrical signal;
an electrical signal amplification system;
frequency weighting or analysis filters (if required);
a reading system giving a level expressed in dB ;
outputs for displaying or...
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Noise measurement
Noise reduction
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