This is all very cool but how did I make it through this entire article without reading the word SONAR once? They even discuss underwater exploration robots using sound to navigate a space.

With SONAR, the transmitted sound source is also being received at the same point which allows for the intended measurement. This generalizes that method to a source being captured by a sink in any point in the predefined 3D space. I’d say it’s far more flexible as an emerging technology that sticking with something like SONAR which is primarily used for water-specific applications.

That’s what I mean. I was surprised I didn’t find what you wrote in the article.

Why sonar? The idea I think should be to build an object hierarchy from sounds alone and then maybe down the line pair it with a video network that does the same