On a sunny day (Thu, 14 Jun 2012 07:23:29 -0700) it happened Joerg wrote in :
Holly golly, why limit yourself.
Never was the case for me, day job designing things, in the evening designing things and building things at home, in the weekend the same. Very often I used what I tried at home late in the night in my job, and it payed off. I guess electronics is a lifestyle.. But then I could probably be called a nerd...:-)
Well, you can buy plastic and metal boxes, a can of spray paint..
We did it very differently, I am talking worldwide phone links, the transmit side used a compander, and the receive side an expander, Philips NE570.
It would not surprise me a bit if those conference softwares did not already have some option for that, would be the first thing to implement... But then again, everybody that participates needs to do it. You can actually also only use the expander and set a noise threshold.
Things like VOX and anti-trip come to mind too and should be familiar to you. I used headphones last time in conference what was it? Cannot remember the name of the service, dial via PC to US.