I often have music in the background and that makes it hard to use Vox Commando. It would be nice if I could partially mute the computer for a couple seconds when the prefix is recognized so I'm free to say what I want without being disturbed. That way I can repeat "computer ... computer ... " until I'm heard and then give the command.
There are many ways to deal with this issue, some better than others, some based on hardware and some based only on reconfiguring VC.
If you want to only use an open mic and no remote buttons etc. then you can use one of the methods described in this post:
http://voxcommando.com/forum/index.php?topic=600.msg5040#msg5040