Calculate Equivalente Continuous Sound Level

Dear all,

I'm new coding with matlab and I'm trying to calculate some sound quantities and I'm experiencing some difficulties calculation the Equivalente Continuous Sound Level (Leq.).

In fact I would like to calculate Leq. for a given .WAV file without using splMeter.

Is there any function to do it or how can I implement the code to get the Leq.

Thank you in advance,

RD