function annotation name

To make the functions easily recognizable, the Nor145 names all measurement functions in a certain way. A typical example is is "LAFspl". Please note that not all functions may be available, depending on installed options.

All level functions are denoted with a "L" first to indicate a level measurement.

The second upper-case character can either indicate a frequency dependent function, or a frequency weighting network.

A - indicates an A-weighted frequency network.
C - indicates a C-weighted frequency network.
Z - indicates a Z-weighted frequency network.
f - indicates a frequency dependent function, logging all frequencies.

The third capital character will indicate the time constant, or the special sound exposure level:

F - "Fast" time constant.
S - "Slow" time constant.
I - "Impulse" time constant.
E - sound exposure level (also available as L_IE, impulse sound exposure level.

The rest of the characters are usually in lower-case, with some exceptions:

eq - equivalent continous level.
spl - the sound pressure level.
peak - the amplitude of signal.
max - the maximum value of a time function in a profile slice.
min - the minimum value of a function in a profile slice.
TM5 - a special standard for equivalent sound pressure.