[samf]

I've often thought about how this sort of thing could be used for site security, much like cameras are used. E.g. it could hear a person's footsteps, and hear a person breathing, and it could distinguish between a person and an animal. With multiple microphones, it could determine a location.

I wonder if this is being done already.

[dylan604]

There's a system being used now to attempt to triangulate gun shots, but it's not widely praised as being very successful

[dghlsakjg]

From what I understand about shotspotter it is really good at triangulating the location of a sound.

The issues it runs into are all human. It uses humans to determine whether a recorded sound is a gunshot or some other sound. It is deployed selectively in cities, in areas chosen by the police department (very frequently in minority neighborhoods). Conclusions have been used as evidence in court without exposing the underlying data and algorithms used to reach the conclusion.