As a very important criterion of the Voyage Data Recorder, the recognition rate and character of real-time of Man Voice Recognition (MVR) are very important to the system for data recording. MVR is the arithmetic to determine whether there is anybody talking by judging some parameters which are collected from the microphone or calculated from the source voice data. After judging these data, it will tell system the result.MVR arithmetic can be concluded by analyzing the source voice data, picking the charact...