Those of you who have read the Ranger’s Apprentice series by John Flanigan or The King’s Ranger Series by A.C. Cobble will know the importance of staying still and observing movement.
The basic idea is that you stay still and watch your surroundings. The thing you are tracking will eventually move which is when you notice it and take whatever action you have to.
I have wanted to try this with the vOICe which I did today while eating lunch at the Select City Walk mall. Sacheta and I were seated on a bench and I had the vOICe running. I was using my Vuzix M4000 monocular device and watching the scene in front of us.
I could sense how it changed as people moved about and once I managed to sense a slow moving open buss for children. It was like a train. I could hear it but it was fun to see it as well.

This skill also comes in handy while standing in a queue or even in an isle in a shop. I spend about 3 to 4 frames building a mental map of what is in front of me. That means that the soundscapes have panned about 4 times. I then watch for changes. Focus on far objects that is the background. Is something coming nearer? Is the cluster of things reducing? A reduction of things and more space usually means that people have moved out of that area and I am free to move. If a cluster of objects comes closer, it may be time to find another location or just move a little backwards since people want to cross.

I do need to keep revising my mental map. A cluster of people may be sitting or standing for a while which means they become a part of the scene. This is context dependent.

As with most things, this skill comes with practice and it is a good idea to think about what you want to do and then start implementing with the vOICe.

You do have change detection mode in the vOICe that does this automatically but the thing to note with that feature is that it will trigger if you move your head so it stick to the default settings, be persistent and keep practicing until watching for changes becomes second nature.