Bang & Olufsen's Beolab speakers do pretty much what you are describing. They have a test tone and each one has a little micro dick (only way I can really desc

Bang & Olufsen's Beolab speakers do pretty much what you are describing. They have a test tone and each one has a little micro dick (only way I can really describe it) that pokes out during the test tone playback to pick up reflections. More here: http://www.nytimes.com/2004/02/19/technology/how-it-works-a-speaker-that-adjusts-for-furniture-that-s-in-the-way.html http://www.nytimes.com/2004/02/19/technology/how-it-works-a-...