The Sonocat is very capable in measuring Sound Pressure levels with certified compliance with international standards. Each microphone is calibrated to a higher precision than necessary for Class 1 microphones.

Three common types of frequency weighting are provided to adjust the level according to the situation:

• A-weighting : Frequency weighting based on the relative loudness perceived by the human ear at a sound loudness level of 40 phon.
• C-weighting : Frequency weighting that is more appropriate for higher loudness levels.
• Z-weighting : Frequency weighting at an equal level (0 dB) for all frequency bands (i.e. no frequency weighting).

The overall Sound Pressure Level is computed according to the IEC-61672-1 standard.