4 ms·
With laughable accuracy: http://fox61.com/2013/05/22/fox-ct-investigation-is-costly-gun-shot-detection-system-worth-the-cost/ http://fox61.com/2013/05/22/fox-ct
by kawfey 9y ago
With laughable accuracy: http://fox61.com/2013/05/22/fox-ct-investigation-is-costly-gun-shot-detection-system-worth-the-cost/ http://fox61.com/2013/05/22/fox-ct-investigation-is-costly-g...
Part of the problem is multipath due to reflections caused by buildings, hills, trees, etc. Anytime you listen to thunder or fireworks the rumble persists due to reflections off of such things. It's incredibly difficult to algorithmically remove multipath from terrestrial sources.
- eeZah7Ux 9y agoCorrect. At 30 Hz directionality is a pipe dream.
- vl 9y agoIt's relatively trivial to find direction of the 30 Hz sound source, given 1 million budget - you just need to place microphones 11 meters apart and raise them above buildings until you get direct line of sight to the main source.
- ta2987 9y agoA million bucks wouldn't get a square city block of what you describe.
- Dylan16807 9y agoA square block? 5-10 microphones is plenty. Your goal is to find a direction from the place you deploy, not to blanket the city. Then you can redeploy somewhere else to get another direction, etc.
- eeZah7Ux 9y agoThat's an example of how poor directonality is at 30 Hz.