Maybe, but as a guy who writes DSP software for a living, I took a look at that first patent and there's nothing original or creative about it that could possibly justify a patent -- and Bose must have known that when they filed it. I bet the USPTO clerk didn't have a fucking clue about DSP and was just impressed by fancy words. "Minimizing latency" my ass.
Modern patents are completely different than what people think patents are.
They are not necessarily clever inventions or designs anymore. They are just a way of laying stake to a field or method of doing things.
As an example, people think a better mouse trap would be what you'd file a patent for. No, actually, a company would file a patent for method of eliminating rodents. This would cover all forms of mouse traps that could ever be designed.
A few years ago, I thought I could learn how things are done by reading patents in a hardware/software field. All the patents were overly general, without any useful information and filled with language that only lawyers would use. On the other hand, I couldn't really design anything without "violating" patents because all the patents were so general that it could covered most general ideas that could be used. In fact, before I had read the patents I had some designs and those designs violated patents.