Improve Research On The VDR Man-voice Recognition Technology Based On VxWorks

VDR (Voyage Data Recorder) is one kind of intelligent equipment which is used to record and conserve the important information and parameter of vessel during its voyaging. When vessels meet accident, the data play the important role in analyzing the origin of the accident. For a very large volume of navigation data and recording devices with limited storage space, to ensure recording the data at the scene, VDR must use a reliable rule to decide the data to be covered or saved. This is the role Man-voice Recognition played in VDR. Aimed at improve on the VDR Man-voice Recognition the article includes some innovative discussions which make a certain significance on the development of the VDR.During the research, it is found that VDR Man-voice Recognition technology is one of voice signal processing applications. After introducing the basic knowledge and basic analytical methods of the voice signal processing, the article re—analysis the VDR Man-voice Recognition and designs a complete research project. Then, researching on each unit of the project in details and adding the new algorithms, a improve algorithm of the VDR Man-voice Recognition is given. The research not only uses a large number of voice signal processing methods, but also learns from many typical voice digital processing applications, such as voice activation detection (VAD), voice enhanced.In addition, the research makes the improve algorithms to be carried out in an embedded real-time operating system VxWorks which VDR works in. Therefore the basic principles of the VxWorks operating system and Tornado integrated development environment and VxWorks features of the software appear on the papers. The software development process of the VDR Man-voice Recognition is...