Postby Etoh » 17 Mar 2014 19:13
Short answer: No.
Long answer: Maybe, if you are a good computer programmer and use the right VoIP software.
It could potentially be done if the voice chat programme were modified to connect to a VLC interface and pause/resume when someone was speaking, but that would likely require manually modifying an open source VoIP client (e.g. Mumble), or creating a plugin-in for it, so would not be an easy task. Alternatively, you could code something which monitors the volume and could do it more generically, but that might be even harder and would certainly be more OS-specific.