When the parabolic antenna is used to search for Cabe, the software is programmed to cancel out all frequencies other than Cabe's voice, which we hear over the speakers before cutting to a scene where Cabe is being tortured for information. When the scene cuts back to Team Scorpion eavesdropping in from a distance, you can hear both Cabe and the interrogator over the listening system.
First episode to feature Homeland agent Tim Armstrong