Sound Level Sound Pressure Level with a Frequency weighting, such as dB(A)
Sound Level Meter An instrument for measuring various noise parameters
SPL Sound Pressure Level, the basic measure of noise loudness,
expressed in decibels
Statistical Analysis A calculation performed by a Sound Level Meter on the noise
levels measured during the measurement period to describe the
statistical spread of the noise.
Time History A sample of the noise levels taken every 1 second throughout the
measurement period.
Class 1 Laboratory & Field Grade for Sound Level Meters
Class 2 General Field Grade for Sound Level Meter
Under Range The input to the Sound Level Meter is too low for the current
measurement range. Change the range
Z Weighting Z weighting is a flat frequency response of 8Hz – 20kHz ±1,5dB
excluding microphone response.
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