How to use WinMLS as a level meter for measuring SPL values in octave, 1/3 octave, dBA?

Tests comparing WinMLS with a sound level meter showed good agreement, but for measuring dBA the input measurement chain must be calibrated. The easiest way of doing this calibration is if you have a microphone and a calibrator. For how to do this, see How to perform “Total Calibration”?

If you have a microphone with a known sensitivity, you may also use this and calibrate the rest of the input chain. For how to do this, see Sound card conversion calibration.

To perform the measurement, first load the setup QuasiRealTimeAnalyzer (can be done e.g. from the Setups Toolbar). As default, the plot 1/3-octave Power Spectrum is selected.