An instrument for measuring the level of sound pressure in DECIBELs. Such measurements are called sound level readings. See: SOUND LEVEL. Sound level meters usually ...
An hourly average of the Noise Level (HNL) including number of flights per hour N is also used and defined as: HNL = SENEL + 10 log 10 N - 35.6 (dB) A variation in the calculation ... is shown in the ...
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