Voice Attack
From DCS World Wiki - Hoggitworld.com
Voice Attack uses speech recognition to listen to your voice and trigger certain actions when a certain phrase is said. A VoiceAttack plugin called ViacomPro integrates with DCS's lua engine to provide much more realistic integrations.
Possible Uses
VoiceAttack is quite often used to simulate a co-pilot when flying an aircraft. ViacomPro also allows you to use VoiceAttack to control multiplayer or singleplayer COMM menus, removing the need for a keyboard and mouse.