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0 pointshcfman2y ago0 comments

I developed a TDOA based sound localization system for the Raspberry Pi

https://medium.com/@kim_94237/tdoa-sound-localization-with-t...

and with manual input you can greatly improve the accuracy from what an automatic system could do due to noise and signal degradation. However it’s very time consuming. The service level response would not be met if doing this on many cases I’m sure. Meaning the default accuracy of localization is likely to be a bunch less accurate than what it could be in theory.

What is absolutely needed is to start a validation process. Start legal proceedings to force the disclosure of co-ordinates and exact event time information as recorded by each recorder so the math can be checked. My software will provide that side.

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mszcz2y ago

This looks awesome. I’ve been wondering if it would be practical/feasible to create something similar but portable, self-contained for quieter, „local” sounds, like for instance locating a termite-like bug(s?) that’s been terrorizing my sanity for years now hiding in wooden beams.

hcfmanOP2y ago

Yeah, for short close distances sound camera of phase difference of arrival localization is interesting.

I did wonder about finding mice. I connected an ultra-sonic microphone once and saw lots of squeaks that were probably mice. I suspect the accuracy is sufficient.

tomas7892y ago

Check out “sound camera” on youtube.

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