METHOD OF ARBITRATING SPEAKERPHONE OPERATION IN A PORTABLE COMMUNICATION DEVICE FOR ELIMINATING FALSE ARBITRATION DUE TO ECHO

摘要

A speakerphone arbitration method is used to eliminate the effects of telephone circuits. The method assumes that speech energy received at the speaker phone is an echo (410), unless the speech energy has characteristics that indicate it is not echo, such as the duration of the speech energy (418), and the time at which the speech energy is received relative to the time when the user of the speakerphone finishes speaking, or pauses while speaking.