What is a measuring microphone?
A 'measuring' microphone is a calibrated microphone designed
for use with systems that quantify sound, for example sound
level meters. Measuring microphones are the most accurate
and reliable class of microphone available.
Of course, the high performance of these microphones requires
extremely high standards of engineering. The specifications of
measuring microphones are certainly in a different league from
other classes of microphone — but no microphone can ever be
perfect. This is why measuring microphones are calibrated, because then their characteristics are well-defined and their behaviour is predictable.
Throughout the microphone's working life its accompanying
calibration chart is a most important reference document. To
ensure that the calibration chart remains valid over a long period of time, a measuring microphone must have exceptionally
stable characteristics. Amongst manufacturers, Brüel&Kjær
stands alone in producing measuring microphones of the necessary quality — time has proven it.
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