A few weeks ago I disabled Voice Chat on New Desperation Isle because I was getting frequent reports of people using Voice to harass other visitors. I have since gotten some requests from regular visitors to bring Voice back, and I am doing that, but I want to equip our guests to deal with voice griefers if we have problems with them in the future.
First off, if you simply wish to disable Voice (so you can neither speak in-world or hear others speaking), you can easily do that by going to Edit > Preferences, then picking the Voice Chat tab, and deselecting Enable voice chat. When you click OK, you will no longer hear other people using Voice.
If you simply want to block a specific individual's voice, there are detailed instructions on how to do that at the Voice FAQ of the official Second Life Wiki.
In addition to muting individual players, I ask that you report people who are obviously griefing other players. You can do this by both filing an Abuse Report against them (Help > Report Abuse), and also by reporting the avatar to me or one of my deputies:
- Wildefire Walcott (island owner)
- kelly Walcott (estate manager)
- Vivienne Schell (deputy)
- Lunashee Dagger (deputy)
- Lancelot Auer (deputy)
- Zaldon Barbosa (deputy)
Here's a video produced by a Linden that may provide some additional helpful info on Voice Chat in SL.