The game features ranged, directional voice chat. You can also chat to everyone all over the ship by pressing G for global or chat just to your Alliance members during a raid.
To set it up Go to My Settings – F8 and click the audio button on the left. Put a check in Voice Chat Enabled if it’s not already checked then click Voice Chat setup.
If the Voice chat screen doesn’t come out in front use alt+tab to cycle through your open screens until you see it.
The setup screen will walk you through setting it up. You may have to go into Control Panel > Sound to set your microphone as the default device. Use the “G” key to toggle between Ranged Chat and Global Chat. When on a Raid the Voice Chat is private and separated from Raiders and Defenders.