The system includes a multi-track tape player with a set of head phones which are connected to the audio output of the player and are located in a history-taking booth for use by a patient. A two-track tape is mounted in the tape player and includes a first track having a plurality of questions recorded...http://www.google.de/patents/US3934226?utm_source=gb-gplus-sharePatent US3934226 - Automated audio health history acquisition system
