concentrate
When used in an action scene, you lower your voice so that only those within a certain range you designate under 100 feet can hear you. For example, you could reduce your voice so only those within 5 feet can hear you normally and every 5 feet further must make a Perception check to hear it with a cumulative -1 penalty per 5 feet away they are after the first 5 feet. If used during a social scene, you can also designate the closest X number of creatures as the only ones you're socializing with during this time. This effect ends at the start of your next turn.