whirlingmind wrote:
SanityTheorist wrote:
If you guys can find a solution I'd really like to know...very outspoken group, we are.
.maybe we should use a loud-hailer...

What would help is voice training. Namely, knowing how to project your voice, namely, to make it boom and carry. Think about how drill sergeants, stand-up comedians, or opera singers talk. They don't yell; yelling is for anger. But when they give commands, a speech, or a performance, they talk in a voice that can be heard from across the room. Without a microphone.
We aspies, due to shyness that comes from being mistreated since becoming self-aware and/or lack of social intuition, tend to talk in a dull, quiet voice. It doesn't boom. It doesn't carry. So when we talk, it's easy for people to bush it off as background noise and ignore it. Yelling doesn't help, because it's still the same dull, quiet voice, only in a higher volume. NTs will still ignore you, even if they turn around to see who yelled. For an animal equivalent, consider the difference between a yap of a dachshund and a woof of German shepherd. They're both dog barks, right? Same volume at times, even. But what a difference!
It's not much different for people, sadly. I'm not sure what's exactly required for projecting your voice. I vaguely know it's something about using your diaphragm and not just your vocal chords. It's easy to understand the concept, but hard to master the act. There are plenty of books and videos out there, but I think a class with a professional instructor would be your best bet.
On this excellent point, I'd like to recommend the book "The Right to Speak" by Patsy Rodenburg.
I'm still working on this myself, but it's very very good - it has lots of exercises which help to develop a clear, interesting and authoritative speaking voice, and interesting discussions about the effects this has on others and your own confidence as well. It's aimed at actors and singers but is equally good for anyone who struggles with speech issues the way aspies do.