Weighting
The system whereby a sound level meter
differentiates decibel levels from among three frequency groups -
high, middle and low.
A Weighting
Weighting that attenuates lower frequencies to approximate the response
of the human ear.
B Weighting
Gives combined decibel readings of
high-frequency and mid frequency noise levels. Use in conjunction with A weighting to isolate the sounds that are causing a problem.
C Weighting
Reads all frequencies the same but gives a better response to higher frequencies than do A or B weightings. Use to pinpoint problems when A or B weighted scale readings are very high.
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