[jelan]

This is cool, do you think this would work as a phone application?

Does it do any kind of sound identification or matching? So if I sneeze around the device around the same time another system picks up a firework sound, will it be able to figure that out or is that a post process thing?

Would be interesting for you and your friends to pick a very exact point on GPS somewhere in the middle of all you and light off a big firework, then go back and see how close the system thought it was to the actual location. I know that kind of defeats the purpose of not launching illegal fireworks, but it’s better than shooting a gun in the air I guess.

[hcfman]

Automatic matching is the next phase. Some people have done nice Phd projects on that have have posted github code. It will take a while to integrate that because there are very few gunshots here. First I want to establish what can we ultimately expect out of it and so that's manual testing. There are several big illegal explosions a week so there's test data enough. Likely when developing an automated system I'll have to detune it or train it on fireworks just so there's something to test against.

Currently I have about 7x people in a group so soon we will be able to test if you can localize an explosion from 5km away to something the size of a small car park, that being the case you have something to justify a bigger project in a place that really needs it.

There's another, less obvious usecase as well. Currently in the US there are innocent people being arrested and thrown in jail on the basis of the sound localization and no other evidence. If the people in those areas had their own localizer they could counter false arrest and challenge localizations that could well have been the result of bounces. I like the idea of a tool that can help fight against injustice.