I just read that patent. Looks to me like the guy is attempting to patent pretty much every variety of speaker that's ever been imagined except for horns. What an ego-stoking heap of word salad. I know you can say pretty much anything you want in a patent, but that is so loosely worded and illustrated that it could be construed to mean pretty much anything. I doubt it would withstand any level of legal scrutiny if it were challenged. If that represents the skill of Eric's "retained legal counsel", I don't think anybody has anything to worry about.
This is the patent for Supersymmetry feedback. It's concise, well written, and clearly defines the subject to be protected with illustrations that cannot be broadly interpreted.
https://patents.google.com/patent/US5376899A/en
This is the patent for Supersymmetry feedback. It's concise, well written, and clearly defines the subject to be protected with illustrations that cannot be broadly interpreted.
https://patents.google.com/patent/US5376899A/en