I really don’t know what one would use the Voice Activity report for. When it is working it shows how much you talk during the day. I have a vague recollection that someone had the theory that if your HA’s are working right you will talk more. That kind of seems a way out there.
My interest in it was to find out if the Own Voice Processing was actually working in my HA’s. I am now getting the Voice Activity report but a few things have changed, so I’m not sure what to attribute it to for sure. But, I think in my previous fitting the fitter did the Own Voice Processing training, but then forgot to turn it on.
Having the Own Voice Processing working is quite helpful though. It does make your voice sound better to yourself. And the other purpose is that OVP is an input to what Signia calls the 3D classifier. It identifies whether or not you are engaged in conversation, and at least in theory optimizes the settings of the HA to suit. Signia claims that along with acoustic information, and motion state, there are 24 different situations that can be identified… So if you do not have the OVP trained and turned on, then the automatic adjustments that the HA can do are limited. I believe the Motion detection depends on a smartphone input so if you have no smartphone enabled with motion detection, the options are even further limited.
Here is some Signia information on the 3D Classifier.