The language laboratory is an audio or audio-visual installation used as an aid in modern language teaching. They can be found, amongst other places, in schools, universities, and academies.The language laboratory is an audio or audio-visual installation used as an aid in modern language teaching. They can be found, amongst other places, in schools, universities, and academies.The principle of a language lab essentially has not changed. It's still a teacher-controlled system connected to a number of student booths, containing a student's control mechanism and a headset with a microphone. Digital language labs have the same principle. A software-only language lab changes the concept of where and what a language lab is. Software can be installed and accessed on any networked PC anywhere on a school, college, or university campus. Software- only systems can be located in one room, from room-to-room or campus-to-campus.