ofSoundStream how to tell if audio is actually playing from a stream?

Hello,

Been looking at documentation for this addon consider using it on an app im building which will analyse a live audio stream and if it is silent for 10 seconds make a voice call.

I have a fairly good idea of how to do the voice call element with an ardunio and gsm sheild however I can’t seem to work out which functions I would use within OFSoundStream to “analyse” the audio.

Can anyone suggests something?