COMMUNICATION DEVICE, APPARATUS, AND METHOD UTILIZING PSEUDONOISE SIGNAL FOR ACOUSTICAL ECHO CANCELLATION

摘要

A full-duplex audio network (10) connects a partially-enclosed near-end space (12) and a partially-enclosed far-end space (14). The full-duplex audio network (10) includes a near-end communication device (16) that is located in the partially-enclosed near-end space (12) and a far-end communication device (18) that is located in the partially-enclosed far-end space (14). Audio waves are detected at either of the microphones (22, 46), and are transmitted to the other station (12, 14) through the transport system (28). The echo canceler (30) is located in the near-end communication device (16).